Medicare Enrolled

Dr. Mark Jennings, MD

Student in an Organized Health Care Education/Training Program · Allen, TX
Practice pattern: Mixed Practice — Diverse clinical practice across multiple procedure types
1105 CENTRAL EXPY N STE 235, Allen, TX 75013
9727476042
Registered in NPPES since 2009
NPI: 1336379783 verify on NPPES ↗
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating. This page presents federal public records about Dr. Jennings from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
Are you Dr. Jennings? Request a correction or review of any data shown here. Provider portal →

What this data tells you about Dr. Jennings

Dr. Mark Jennings is a student in an organized health care education/training program specialist in Allen, TX, with 17 years of NPI registration. Based on federal Medicare data, Dr. Jennings performed 138,192 Medicare services in 2023. These records do not provide a deduplicated patient total.

Between the years covered by Open Payments, Dr. Jennings received a total of $3,539 from 46 pharmaceutical and/or device companies across 190 payment records. A record can group multiple payments. These transfers are publicly reported through CMS Open Payments. Disclosure alone does not establish their effect on care. A reliable breakdown by payment category is not available in this snapshot. Patients may wish to discuss these relationships with their provider.

The Data Coverage level for Dr. Jennings is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.

✓ 17 years of NPI registration ▲ Top 0% volume in TX $3,539 industry payments

Medicare Practice Summary — 2023

Medicare Utilization ↗
138,192
Medicare services
Top 0% in TX for student in an organized health care education/training program
Not available
Unique patients (not deduplicated)
$15
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →

Top procedures by volume

Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.

Procedure Volume Avg. paid Avg. submitted
Nivolumab injection (Opdivo) 15,820 $24 $64
Contrast dye for imaging (iodine-based)
A contrast agent containing 300-399 mg/ml of iodine used to enhance imaging studies. It is administered per milliliter to improve the visibility of internal structures.
15,025 $0 $1
Iron infusion (Injectafer)
An intravenous injection of ferric carboxymaltose, an iron replacement medication.
15,000 $1 $3
Paclitaxel chemotherapy injection 12,963 $0 $2
Pembrolizumab injection (Keytruda) 11,800 $43 $114
Injection, granisetron, extended-release, 0.1 mg 9,600 $5 $12
Anti-nausea injection (aprepitant) 8,060 $1 $5
Daratumumab injection (Darzalex)
An injection containing daratumumab and hyaluronidase-fihj administered under the skin.
7,380 $38 $110
Oxaliplatin chemotherapy injection
This procedure involves the administration of oxaliplatin, a chemotherapy medication, via injection. The dosage specified is 0.5 mg.
6,400 $0 $4
Dexamethasone injection (steroid)
An injection of dexamethasone sodium phosphate, a corticosteroid medication, administered in a dose of 1 milligram.
3,932 $0 $1
Eflapegrastim injection, 0.1 mg
An injection of eflapegrastim-xnst administered at a dose of 0.1 mg.
3,168 $26 $88
Injection, docetaxel, 1 mg 2,200 $1 $9
Epoetin alfa injection (Retacrit) for anemia
An injection of a biosimilar form of epoetin alfa used for non-end-stage renal disease purposes. The dose administered is 1000 units.
1,760 $6 $28
Bevacizumab-bvzr biosimilar injection, 10 mg
An injection of bevacizumab-bvzr, a biosimilar medication, administered in a 10 mg dose.
1,670 $26 $158
Bortezomib injection, 0.1 mg
Administration of a 0.1 mg dose of bortezomib medication via injection.
1,540 $4 $116
Bevacizumab-maly biosimilar injection, 10 mg
An injection of bevacizumab-maly, a biosimilar medication, with a dosage of 10 mg.
1,390 $53 $181
Complete blood count (CBC) with differential
An automated laboratory test that measures the levels of red blood cells, white blood cells, and platelets in the blood, including a breakdown of the different types of white blood cells.
1,268 $8 $26
Comprehensive metabolic blood panel
A blood test that measures a group of chemicals, including glucose, electrolytes, and kidney and liver function markers.
1,207 $10 $36
Immune globulin infusion (Gammagard)
An injection of immune globulin (Gammagard Liquid) to provide antibodies. The dose specified is 500 mg.
1,090 $35 $100
Office visit, established patient (30-39 min)
A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition.
978 $80 $232
Trastuzumab biosimilar injection, 10 mg
An injection of trastuzumab-qyyp, a biosimilar medication, administered in a 10 mg dose.
960 $23 $205
Rituximab-pvvr biosimilar injection, 10 mg
An injection of rituximab-pvvr, a biosimilar medication, administered in a 10 mg dose.
950 $24 $185
Lactate dehydrogenase (LDH) level test
A blood test that measures the amount of lactate dehydrogenase, an enzyme found in many body tissues. It helps assess tissue damage or disease.
929 $6 $21
Magnesium level test
A blood test to measure the amount of magnesium in your body. This helps check for magnesium deficiency or excess.
866 $7 $23
Phosphate level test
A blood test that measures the amount of phosphate in your body. Phosphate is a mineral that helps keep bones and teeth strong.
866 $5 $16
Uric acid level test
A blood test that measures the level of uric acid in your body. Uric acid is a waste product formed when the body breaks down purines.
864 $4 $15
Blood draw (venipuncture)
Insertion of a needle into a vein to collect a blood sample.
804 $8 $13
Gadolinium MRI contrast injection
Administration of a gadolinium-based contrast agent to enhance magnetic resonance imaging. The dose is measured per milliliter of the agent injected.
731 $1 $6
Additional sequential IV infusion, 1 hour or less
This code represents an additional intravenous infusion administered sequentially to a primary infusion. It covers the administration time of one hour or less.
650 $20 $69
Anti-nausea injection (Aloxi/palonosetron) 620 $1 $56
Injection, leucovorin calcium, per 50 mg 537 $3 $15
Intravenous chemotherapy infusion, 1 hour or less
Administration of chemotherapy medication directly into a vein. The procedure takes one hour or less to complete.
485 $90 $300
Injection, fulvestrant, 25 mg 410 $9 $235
Carboplatin chemotherapy injection, 50 mg
Administration of a 50 mg dose of carboplatin, a chemotherapy medication, via injection.
401 $2 $43
Fluorouracil injection, 500 mg
Administration of a 500 mg dose of fluorouracil medication via injection.
374 $2 $6
Flow cytometry, additional marker
An additional marker is tested during a flow cytometry procedure to analyze DNA or cells. This step adds specific data points to the initial analysis.
361 $17 $101
Anti-nausea injection (ondansetron/Zofran) 304 $0 $2
Drug injection, under skin or into muscle
A procedure involving the administration of a medication or substance via injection into the subcutaneous tissue or muscle.
280 $10 $57
Injection, gemcitabine hydrochloride, not otherwise specified, 200 mg 224 $3 $48
Pegfilgrastim-apgf injection
An injection of pegfilgrastim-apgf, a biosimilar medication. The dose specified is 0.5 mg.
216 $103 $843
Office visit, established patient, complex (40-54 min)
An office or outpatient visit for an existing patient lasting between 40 and 54 minutes. This level of service is determined by the total time spent on the date of the encounter.
188 $119 $320
Cyclophosphamide, 100 mg 188 $15 $105
Additional hour of intravenous chemotherapy
This code represents the administration of chemotherapy medication into a vein for each additional hour beyond the initial period.
165 $20 $65
Ferritin level test (iron stores)
A blood test that measures the level of ferritin, a protein that stores iron in the body.
162 $13 $46
Iron level test 162 $6 $19
Iron binding capacity test
A blood test that measures the amount of iron in the blood and the blood's ability to bind and transport iron.
162 $9 $30
CT scan of chest with contrast
A computed tomography scan of the chest using a contrast dye to enhance the visibility of internal structures.
149 $44 $500
Intravenous infusion of new drug or substance, 1 hour or less
This procedure involves administering a new medication or substance directly into a vein through an existing access site. The infusion is completed within one hour or less.
145 $45 $140
Office visit, established patient (20-29 min)
An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition.
140 $51 $156
Diphenhydramine injection, up to 50 mg
An injection of diphenhydramine hydrochloride, an antihistamine medication, administered in a dose of up to 50 milligrams.
139 $1 $2
Gadopiclenol injection, 1 ml
Administration of gadopiclenol, a contrast agent, via injection in a 1 ml dose.
137 $9 $11
Unclassified drug
A medication that does not fit into standard HCPCS or CPT classification categories.
135 $566 $1,803
CT scan of abdomen and pelvis with contrast
A CT scan that uses dye to create detailed images of the abdomen and pelvis. This imaging test helps doctors examine internal organs and structures in these areas.
133 $150 $603
Thyroid stimulating hormone (TSH) test
A blood test that measures the level of thyroid stimulating hormone to evaluate thyroid function.
132 $16 $57
Intravenous infusion, 1 hour or less
Administration of medication or fluid directly into a vein for therapeutic, preventive, or diagnostic purposes. The procedure lasts one hour or less.
127 $43 $155
Doxorubicin hydrochloride injection, 10 mg
This procedure involves the administration of a 10 mg dose of doxorubicin hydrochloride via injection.
127 $2 $7
Non-hormonal chemotherapy injection
This procedure involves administering non-hormonal anti-neoplastic chemotherapy medication via injection into the skin or muscle tissue.
121 $50 $166
Zoledronic acid injection, 1 mg
An injection of zoledronic acid administered at a dose of 1 mg.
120 $7 $126
Reticulated platelet measurement
A blood test that measures the level of young, newly formed platelets in the body.
103 $35 $91
Intravenous injection of additional new drug or substance
Administration of an additional new medication or substance directly into a vein.
93 $11 $50
Irrigation of implanted venous access device
This procedure involves flushing an implanted venous access device to clear blockages or maintain patency. It ensures the device remains functional for delivering medications or fluids.
88 $17 $55
Blood creatinine level test
A blood test that measures the amount of creatinine, a waste product from muscle wear and tear, to help assess kidney function.
85 $5 $17
Carcinoembryonic antigen (CEA) level test
A blood test that measures the level of carcinoembryonic antigen (CEA) protein. This test is used to monitor certain types of cancer.
83 $19 $65
New patient office visit (45-59 min)
An initial office visit for a new patient lasting between 45 and 59 minutes. This code covers the total time spent by the physician or qualified healthcare professional on the date of the encounter.
77 $110 $334
Subcutaneous or intramuscular chemotherapy injection
This procedure involves administering anti-cancer hormonal medication through an injection into the tissue under the skin or into a muscle.
68 $24 $73
Fluorodeoxyglucose f-18 fdg, diagnostic, per study dose, up to 45 millicuries 67 $125 $450
Immunoglobulin level test
A blood test that measures the level of gammaglobulins, which are immune system proteins.
60 $9 $32
Normal saline infusion, 1000 cc
Administration of 1000 cc of normal saline solution into a vein. This procedure involves the intravenous delivery of a sterile saltwater solution.
58 $2 $17
Nuclear medicine scan from skull base to mid-thigh with CT
A nuclear medicine imaging study covering the area from the base of the skull to the middle of the thighs, performed alongside a CT scan.
54 $1,033 $4,084
Additional hour of intravenous hydration
This code represents each additional hour of intravenous fluid administration beyond the initial hour. It is used to bill for extended hydration therapy.
54 $8 $35
Leuprolide acetate (for depot suspension), 7.5 mg 51 $137 $550
Magnesium sulfate injection, per 500 mg
An injection of magnesium sulfate administered in 500 mg increments.
50 $1 $4
Intravenous push injection of new drug or substance
A healthcare provider injects a new medication or substance directly into a vein using a push technique.
46 $39 $139
Additional hour of intravenous infusion
This code represents each additional hour of intravenous infusion beyond the initial hour for therapy, prevention, or diagnosis.
41 $14 $45
CT scan of chest, without contrast
A computed tomography scan of the chest area that uses X-rays to create detailed images without the use of contrast dye.
40 $42 $409
IV chemotherapy initiation with community continuation
Initiation of an intravenous chemotherapy infusion in a clinic using clinic supplies, with continuation of the infusion in a community setting such as home or assisted living.
37 $118 $1,000
New patient office visit, complex (60-74 min) 34 $146 $465
Prothrombin time test (blood clotting)
A laboratory test that measures how long it takes for blood to clot. This procedure evaluates the body's coagulation process.
29 $4 $13
MRI of brain with and without contrast
An MRI scan of the brain using contrast dye both before and after administration to provide detailed images of brain structures.
28 $141 $1,456
Urine microalbumin test
A laboratory test that measures the amount of a specific protein called microalbumin in a urine sample. This analysis helps assess kidney function.
24 $6 $16
Concurrent intravenous infusion
Administration of medication or fluid into a vein for therapy, prevention, or diagnosis while another infusion is being given.
24 $14 $47
Automated red blood cell count
An automated laboratory test that measures the number of red blood cells in a blood sample.
21 $4 $14
Initial hospital admission, high complexity
Initial hospital inpatient or observation care for a new patient involving high-level medical decision making, with at least 75 minutes total time on the date of the encounter.
20 $127 $489
Vitamin B-12 injection
An injection of vitamin B-12 (cyanocobalamin) with a dose of up to 1000 mcg.
19 $1 $12
Flow cytometry DNA or cell analysis, first marker
A laboratory test that uses a laser to analyze cells or DNA by detecting a specific marker on the cell surface or within the cell.
18 $49 $166
Initial hospital admission, moderate complexity
Initial hospital inpatient or observation care for a new patient involving moderate-level medical decision making, with at least 55 minutes total time on the date of the encounter.
17 $92 $331
Hospital follow-up visit, high complexity
Subsequent hospital inpatient or observation care for an existing patient involving high-level medical decision making, with at least 50 minutes total time on the date of the encounter.
17 $90 $251
CT scan of abdomen and pelvis, without contrast
A computed tomography scan that creates detailed images of the abdominal and pelvic organs. The procedure is performed without the use of intravenous contrast dye.
16 $71 $288
MRI of abdomen with and without contrast
An MRI scan of the abdomen using contrast dye before and after administration to create detailed images of internal structures.
14 $177 $1,548
CT guidance for radiation therapy
This procedure uses computed tomography imaging to guide the precise placement of radiation therapy fields. It ensures accurate positioning for targeted treatment delivery.
14 $87 $314
Whole body nuclear medicine scan with CT
A combined imaging procedure using nuclear medicine and CT scans to visualize the entire body.
14 $1,032 $4,180
Intensity-modulated radiation therapy delivery
Delivery of radiation therapy using narrow beams that are spatially and temporally modulated to target specific areas. This process is performed per treatment session.
13 $253 $1,023
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. These counts do not measure clinical quality or years of experience.
12.8% high complexity
79.8% medium
7.4% routine

Industry Payment Transparency

Open Payments through 2024 ↗
$3,539
Total received (2018-2024)
Avg $506/year across 7 years
Top 10% in TX for student in an organized health care education/training program
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
46
Companies
190
Payment records
Payments are publicly reported; disclosure does not establish legality · Not evidence of wrongdoing · How to interpret →

Payment categories are unavailable while the source breakdown is being rebuilt. Company and year totals do not identify how much belongs to each category.

Payment trend by year

Annual totals from pharmaceutical and medical device companies.

2024
$738
2023
$818
2022
$555
2021
$242
2020
$285
2019
$610
2018
$290

Payments by company (2024)

PFIZER INC.
$260
INTUITIVE SURGICAL, INC.
$130
Ipsen Biopharmaceuticals, Inc
$81
Bayer Healthcare Pharmaceuticals Inc.
$52
Novartis Pharmaceuticals Corporation
$44
Genmab U.S., Inc.
$33
GlaxoSmithKline, LLC.
$32
E.R. Squibb & Sons, L.L.C.
$29
Merck Sharp & Dohme LLC
$22
ABBVIE INC.
$22
Regeneron Healthcare Solutions, Inc.
$19
Astellas Pharma US Inc
$15
Top 3 companies account for 63.8% of 2024 payments
All-time payments by company (2018-2024) ›
PFIZER INC.
$1,026
Novartis Pharmaceuticals Corporation
$287
Merck Sharp & Dohme Corporation
$180
Alexion Pharmaceuticals, Inc.
$163
E.R. Squibb & Sons, L.L.C.
$134
INTUITIVE SURGICAL, INC.
$130
Pharmacyclics LLC, an AbbVie Company
$105
Genentech USA, Inc.
$103
Veran Medical Technologies, Inc.
$84
Ipsen Biopharmaceuticals, Inc
$81
AstraZeneca Pharmaceuticals LP
$77
GENZYME CORPORATION
$72
GlaxoSmithKline, LLC.
$68
Astellas Pharma US Inc
$61
Taiho Oncology, Inc.
$60
Seagen Inc.
$56
Regeneron Healthcare Solutions, Inc.
$55
Bayer Healthcare Pharmaceuticals Inc.
$52
Teva Pharmaceuticals USA, Inc.
$50
Takeda Pharmaceuticals U.S.A., Inc.
$50
Gilead Sciences, Inc.
$48
Celgene Corporation
$42
Merck Sharp & Dohme LLC
$36
Janssen Pharmaceuticals, Inc
$35
Daiichi Sankyo Inc.
$35
Karyopharm Therapeutics Inc.
$35
Genmab U.S., Inc.
$33
RECORDATI_RARE_DISEASES_INC.
$32
Bayer HealthCare Pharmaceuticals Inc.
$29
ADC Therapeutics America, Inc.
$28
Lilly USA, LLC
$27
Boehringer Ingelheim Pharmaceuticals, Inc.
$26
AbbVie, Inc.
$25
PharmaEssentia USA Corporation
$23
ABBVIE INC.
$22
Pharmacyclics LLC, An AbbVie Company
$21
BeiGene USA, Inc.
$18
Amgen Inc.
$17
SANOFI-AVENTIS U.S. LLC
$17
Incyte Corporation
$16
Janssen Biotech, Inc.
$16
Blue Earth Diagnostics Limited
$16
Acrotech Biopharma LLC
$14
Kyowa Kirin, Inc.
$12
Puma Biotechnology, Inc.
$12
EISAI INC.
$11
Top 3 companies account for 42.2% of all-time payments
Associated products mentioned in payments ›
ADCETRIS · ALIMTA · Axumin · BELEODAQ · BENDEKA · BESREMI · BRAFTOVI · BRUKINSA · Da Vinci Surgical System · ELITEK · EPKINLY · Enhertu · Epkinly · FARESTON · GAZYVA · GILOTRIF · IBRANCE · IMBRUVICA · IMFINZI · INJECTAFER · INLYTA · INQOVI · Imbruvica · JADENU · JAKAFI · JEVTANA · KEYTRUDA · KISQALI · LENVIMA · LIBTAYO · LYNPARZA · Lenvima · Lonsurf · MVASI · NERLYNX · NINLARO · Nubeqa · OJJAARA · OPDIVO · Onivyde · PADCEV · PIQRAY · PLUVICTO · PROMACTA · Padcev · Perjeta · REBLOZYL · RYDAPT · SCEMBLIX · SUTENT · SYLVANT · Soliris · Spin · Stivarga · TECENTRIQ · TUKYSA · Trodelvy · ULTOMIRIS · VENCLEXTA · Venclexta · Vyloy · XARELTO · XOSPATA · XPOVIO · XTANDI · ZEJULA
Should you be concerned? Industry payments are disclosed through CMS Open Payments. Disclosure alone does not establish their purpose, legality, or effect on care. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →
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Geographic Context

Student in an organized health care education/training programs in nearby ZIP areas
5,378
County median income
$117,588
Nearest hospital to ZIP centroid (approximate)
TEXAS HEALTH PRESBYTERIAN HOSPITAL ALLEN
0.0 mi

Data Sources

Provider Registry NPPES NPPES snapshot; verify current record
Medicare Enrollment PECOS PECOS snapshot
Practice Data Medicare Util. Annual (CY lag)
Industry Payments Open Payments CY 2024
Disciplinary History — Not included N/A

This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →

Summary

Dr. Jennings is a mixed practice specialist, with above-average Medicare volume (top 0% in TX), with 17 years of NPI registration.

This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →

Frequently Asked Questions

Is Dr. Jennings experienced with nivolumab injection (opdivo)?
Based on Medicare claims data, Dr. Jennings performed 15,820 nivolumab injection (opdivo) services. These records cover Medicare fee-for-service activity, including eligible younger beneficiaries; they do not measure total practice volume or clinical quality.
Does Dr. Jennings receive payments from pharmaceutical companies?
Yes. Dr. Jennings received a total of $3,539 from 46 companies across 190 payment records. A record can group multiple payments. These transfers are publicly disclosed through CMS Open Payments. Disclosure alone does not establish their legality or effect on care. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. Jennings's costs compare to other student in an organized health care education/training programs in Allen?
Dr. Jennings's average Medicare payment per service is $15. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Dr. Jennings) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating the presence of registry, enrollment, activity or payment records, not verified experience or clinical quality. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Source publication dates and the snapshots loaded on this site can differ. Rebuilding a page does not refresh its source records. Check the Medicare reporting year and the payment interval shown above; consult the linked official sources for newer releases and current registry details. See our data freshness policy →
About this page

This page combines public CMS records with calculated summaries and explanatory procedure labels. These transformations are not verbatim federal records. Sources: NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.

This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.

Provider corrections: Provider portal · Privacy questions: Privacy Policy · Terms: Terms of Use · Methodology: Methodology

Data Disclaimer — Data sourced from the Centers for Medicare & Medicaid Services (CMS): National Plan and Provider Enumeration System (NPPES), Open Payments program, Medicare Provider Utilization and Payment Data, and Provider Enrollment & Certification data (PECOS). Published under the Freedom of Information Act (FOIA). This website is not affiliated with, endorsed by, or authorized by CMS, HHS, or the U.S. Government. Data may contain errors as reported to CMS by providers and reporting entities. Industry payment disclosure alone establishes neither wrongdoing nor legality. Medicare data reflects only patients aged 65+ or those with qualifying disabilities. For corrections, contact CMS directly. This information does not constitute medical advice and should not be used as the sole basis for choosing a healthcare provider. Procedure descriptions use plain language and do not reference CPT® codes, which are copyrighted by the American Medical Association. Full methodology → · Report a data error → · Privacy policy →