Medicare Enrolled
Dr. Carl Chakmakjian, D.O.
Medical Oncology · Waco, TX
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
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. Chakmakjian 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 →
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What this data tells you about Dr. Chakmakjian
Dr. Carl Chakmakjian is a medical oncology specialist in Waco, TX, with 20 years of NPI registration. Based on federal Medicare data, Dr. Chakmakjian performed 49,473 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Chakmakjian received a total of $284,069 from 45 pharmaceutical and/or device companies across 314 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. Chakmakjian 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.
✓ 20 years of NPI registration
▲ Top 20% volume in TX
$284,069 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗49,473
Medicare services
Top 20% in TX for medical oncology
Not available
Unique patients (not deduplicated)
$7
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 |
|---|---|---|---|
| Iron infusion (Feraheme) An injection of ferumoxytol used to treat iron deficiency anemia in patients not on dialysis. |
15,300 | $0 | $5 |
| Darbepoetin injection (Aranesp) for anemia An injection of darbepoetin alfa used for non-end-stage renal disease purposes. |
8,290 | $2 | $20 |
| 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. |
6,517 | $0 | $3 |
| Anti-nausea injection (fosaprepitant) An injection of fosaprepitant, a medication used to prevent nausea and vomiting. |
5,100 | $0 | $5 |
| Paclitaxel chemotherapy injection | 3,438 | $0 | $8 |
| Dexamethasone injection (steroid) An injection of dexamethasone sodium phosphate, a corticosteroid medication, administered in a dose of 1 milligram. |
2,995 | $0 | $1 |
| Injection, granisetron hydrochloride, 100 mcg | 1,020 | $0 | $24 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
1,006 | $8 | $20 |
| 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. |
834 | $89 | $368 |
| 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. |
786 | $8 | $36 |
| Anti-nausea injection (Aloxi/palonosetron) | 640 | $1 | $114 |
| Intravenous injection of additional new drug or substance Administration of an additional new medication or substance directly into a vein. |
374 | $11 | $108 |
| Intravenous chemotherapy infusion, 1 hour or less Administration of chemotherapy medication directly into a vein. The procedure takes one hour or less to complete. |
318 | $94 | $707 |
| Carboplatin chemotherapy injection, 50 mg Administration of a 50 mg dose of carboplatin, a chemotherapy medication, via injection. |
270 | $2 | $300 |
| 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. |
233 | $20 | $157 |
| 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. |
231 | $272 | $2,762 |
| 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. |
209 | $62 | $250 |
| Manual white blood cell count A laboratory test that involves examining a sample under a microscope to manually count the number of white blood cells present. |
173 | $4 | $22 |
| Complete blood count (CBC), automated An automated laboratory test that measures the levels of red blood cells, white blood cells, and platelets in the blood. |
173 | $6 | $34 |
| 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. |
163 | $9 | $75 |
| 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. |
136 | $2 | $19 |
| Zoledronic acid injection, 1 mg An injection of zoledronic acid administered at a dose of 1 mg. |
112 | $6 | $431 |
| 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. |
100 | $10 | $96 |
| Diphenhydramine injection, up to 50 mg An injection of diphenhydramine hydrochloride, an antihistamine medication, administered in a dose of up to 50 milligrams. |
98 | $1 | $7 |
| Reticulated platelet measurement A blood test that measures the level of young, newly formed platelets in the body. |
93 | $35 | $143 |
| 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. |
92 | $45 | $313 |
| 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. |
84 | $49 | $344 |
| CT scan of chest with contrast A computed tomography scan of the chest using a contrast dye to enhance the visibility of internal structures. |
74 | $43 | $821 |
| Additional hour of intravenous chemotherapy This code represents the administration of chemotherapy medication into a vein for each additional hour beyond the initial period. |
70 | $18 | $161 |
| 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. |
68 | $169 | $1,067 |
| 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. |
67 | $121 | $565 |
| Unclassified drug A medication that does not fit into standard HCPCS or CPT classification categories. |
63 | $1 | $8 |
| 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. |
44 | $18 | $114 |
| Additional hour of intravenous infusion This code represents each additional hour of intravenous infusion beyond the initial hour for therapy, prevention, or diagnosis. |
40 | $16 | $100 |
| Radiation therapy, 3+ areas, 11-19 MeV Delivery of high-energy radiation (11-19 MeV) to three or more separate treatment areas using custom blocking, tangential ports, wedges, rotational beams, and compensators. |
39 | $178 | $700 |
| Injection, fosnetupitant 235 mg and palonosetron 0.25 mg | 38 | $348 | $1,722 |
| 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. |
36 | $35 | $686 |
| Radiation therapy, 3+ areas, 6-10 MeV Radiation treatment delivered to three or more separate areas using advanced techniques like custom blocking and rotational beams with an energy level of 6-10 MeV. |
34 | $177 | $700 |
| 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. |
30 | $77 | $560 |
| 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. |
26 | $26 | $145 |
| Hospital follow-up visit, moderate complexity Follow-up hospital visit for an existing patient involving moderate medical decision making. The visit requires at least 35 minutes of time spent on the date of service. |
23 | $58 | $247 |
| 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. |
21 | $1,092 | $4,802 |
| Fluorodeoxyglucose f-18 fdg, diagnostic, per study dose, up to 45 millicuries | 15 | $91 | $657 |
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.
32.8% high complexity
59.9% medium
7.4% routine
Industry Payment Transparency
Open Payments through 2024 ↗$284,069
Total received (2018-2024)
Avg $40,581/year across 7 years
Top 7% in TX for medical oncology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
45
Companies
314
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
$24,851
2023
$17,950
2022
$40,858
2021
$40,601
2020
$16,737
2019
$74,822
2018
$68,249
Payments by company (2024)
E.R. Squibb & Sons, L.L.C.
$24,187
Novartis Pharmaceuticals Corporation
$73
Eisai Inc.
$59
Daiichi Sankyo Inc.
$59
Celgene Corporation
$53
Merck Sharp & Dohme LLC
$52
Regeneron Healthcare Solutions, Inc.
$50
AstraZeneca Pharmaceuticals LP
$46
PFIZER INC.
$36
ADC Therapeutics America, Inc.
$28
Takeda Pharmaceuticals U.S.A., Inc.
$25
Bayer Healthcare Pharmaceuticals Inc.
$24
Incyte Corporation
$22
Genmab U.S., Inc.
$22
Gilead Sciences, Inc.
$20
GlaxoSmithKline, LLC.
$19
PUMA BIOTECHNOLOGY, INC.
$18
SOBI, INC
$16
Tempus AI, Inc
$15
Janssen Biotech, Inc.
$13
GENZYME CORPORATION
$13
Top 3 companies account for 97.9% of 2024 payments
All-time payments by company (2018-2024) ›
E.R. Squibb & Sons, L.L.C.
$277,011
Novartis Pharmaceuticals Corporation
$3,991
Celgene Corporation
$654
Janssen Biotech, Inc.
$238
Incyte Corporation
$183
Merck Sharp & Dohme LLC
$182
AstraZeneca Pharmaceuticals LP
$166
Astellas Pharma US Inc
$115
Regeneron Healthcare Solutions, Inc.
$111
Merck Sharp & Dohme Corporation
$108
Janssen Scientific Affairs, LLC
$103
Dendreon Pharmaceuticals LLC
$102
Taiho Oncology, Inc.
$98
Daiichi Sankyo Inc.
$80
Eisai Inc.
$77
GENZYME CORPORATION
$59
GlaxoSmithKline, LLC.
$56
Bayer Healthcare Pharmaceuticals Inc.
$53
Lilly USA, LLC
$50
PFIZER INC.
$50
PharmaEssentia USA Corporation
$48
Takeda Pharmaceuticals U.S.A., Inc.
$46
Ipsen Biopharmaceuticals, Inc
$40
Mirati Therapeutics, Inc.
$33
Gilead Sciences, Inc.
$32
Seagen Inc.
$32
ADC Therapeutics America, Inc.
$28
Karyopharm Therapeutics Inc.
$26
Sirtex Medical Inc
$23
Genmab U.S., Inc.
$22
Puma Biotechnology, Inc.
$21
TAIHO ONCOLOGY, INC.
$20
EMD Serono, Inc.
$20
Adaptive Biotechnologies Corporation
$19
Amgen Inc.
$19
Stemline Therapeutics Inc.
$18
PUMA BIOTECHNOLOGY, INC.
$18
SOBI, INC
$16
BeiGene USA, Inc.
$16
Bayer HealthCare Pharmaceuticals Inc.
$16
Tempus AI, Inc
$15
MENARINI SILICON BIOSYSTEMS, INC.
$15
Ironshore Pharmaceuticals Inc.
$14
Boston Scientific Corporation
$14
Myriad Genetic Laboratories, Inc.
$12
Top 3 companies account for 99.2% of all-time payments
Associated products mentioned in payments ›
ADCETRIS · AUGTYRO · BARACLUDE · BAVENCIO · BESREMI · BLENREP · BRUKINSA · CABLIVI · CALQUENCE · Cellsearch · DARZALEX · ELIQUIS · ELREXFIO · EMPLICITI · ENHERTU · Enhertu · Epkinly · Fabhalta · IBRANCE · IMBRUVICA · IMFINZI · JAKAFI · JEMPERLI · JORNAY PM · KEYTRUDA · KISQALI · KRAZATI · LIBTAYO · LONSURF · LUMAKRAS · Lenvima · Lonsurf · MEKINIST · MONJUVI · NINLARO · Nubeqa · OJJAARA · OPDIVO · Orserdu · PADCEV · PIQRAY · PROMACTA · PROVENGE · REBLOZYL · RETEVMO · SARCLISA · SIR-Spheres Microspheres · SOMATULINE DEPOT · SpaceOAR VUE System - 10mL · Stivarga · TASIGNA · TECVAYLI · VERZENIO · VONJO · XPOVIO · Xofigo · clonoSEQ · myRisk
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 →
Geographic Context
Medical oncologists in nearby ZIP areas
5
County median income
$63,888
Nearest hospital to ZIP centroid (approximate)
ASCENSION PROVIDENCE
0.0 mi
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. Chakmakjian is a mixed practice specialist, with above-average Medicare volume (top 20% in TX), with 20 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. Chakmakjian experienced with iron infusion (feraheme)?
Based on Medicare claims data, Dr. Chakmakjian performed 15,300 iron infusion (feraheme) 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. Chakmakjian receive payments from pharmaceutical companies?
Yes. Dr. Chakmakjian received a total of $284,069 from 45 companies across 314 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. Chakmakjian's costs compare to other medical oncologists in Waco?
Dr. Chakmakjian's average Medicare payment per service is $7. 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. Chakmakjian) 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 →
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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.
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