Medicare Enrolled
Dr. Mark Warren, M.D.
Endocrinology · Greenville, NC
Practice pattern: Clinical Cardiology
— Primarily office-based clinical cardiology
Speaking/Promotional
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. Warren 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. Warren
Dr. Mark Warren is an endocrinology specialist in Greenville, NC, with 21 years of NPI registration. Based on federal Medicare data, Dr. Warren performed 16,598 Medicare services across 6,213 unique beneficiaries.
Between the years covered by Open Payments, Dr. Warren received a total of $990,443 from 61 pharmaceutical and/or device companies across 1892 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in endocrinology. The majority of payments are for speaking programs and promotional activities, reflecting participation in industry-sponsored events. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Warren 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.
✓ 21 years in practice
▲ Top 3% volume in NC
$990,443 industry payments
Medicare Practice Summary
Medicare Utilization ↗16,598
Medicare services
Top 3% in NC for endocrinology
6,213
Unique beneficiaries
$27
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~790 Medicare services per year of practice
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 |
|---|---|---|---|
| Denosumab injection (Prolia/Xgeva) | 6,062 | $18 | $50 |
| Hemoglobin A1c test (diabetes monitoring) A blood test that measures your average blood sugar levels over the past two to three months. |
999 | $10 | $44 |
| Remote patient monitoring management, 20 min/month Management based on results from remote vital sign monitoring for the first 20 minutes per calendar month. |
833 | $37 | $107 |
| 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. |
832 | $88 | $271 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
756 | $8 | $11 |
| Remote vital sign monitoring management, each additional 20 minutes This code covers the time spent by a provider managing patient data from remote vital sign monitoring devices. It applies to each additional 20-minute increment beyond the initial monthly service period. |
723 | $30 | $87 |
| Blood glucose test using hand-held instrument A test that measures the level of sugar in the blood using a portable device. The result helps monitor blood glucose levels. |
681 | $3 | $13 |
| Thyroid stimulating hormone (TSH) test A blood test that measures the level of thyroid stimulating hormone to evaluate thyroid function. |
628 | $16 | $58 |
| Free thyroxine (T4) test A blood test that measures the level of free thyroxine, a thyroid hormone, in the bloodstream. |
620 | $9 | $68 |
| 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. |
571 | $125 | $379 |
| Comprehensive metabolic blood panel A blood test that measures a group of chemicals, including glucose, electrolytes, and kidney and liver function markers. |
558 | $10 | $50 |
| Continuous glucose monitoring with interpretation This procedure involves monitoring blood sugar levels in tissue fluid using a sensor placed under the skin, along with the interpretation and reporting of the results. |
444 | $26 | $85 |
| Lipid panel (cholesterol and triglycerides) A blood test that measures cholesterol and triglyceride levels. |
379 | $13 | $71 |
| 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. |
259 | $8 | $29 |
| Bone density scan (DEXA) A test that uses low-dose X-rays to measure bone mineral density in the hip, pelvis, and spine. It helps assess bone strength and risk of fractures. |
255 | $15 | $56 |
| Urinalysis with microscopic exam A urine test performed manually that includes examining the sample under a microscope to check for abnormalities. |
212 | $3 | $17 |
| Creatinine test (kidney function) A blood test that measures the amount of creatinine to assess kidney function or detect muscle injury. |
205 | $5 | $25 |
| Urine microalbumin test (kidney screening) A laboratory test that measures the amount of microalbumin, a small protein, in a urine sample. This test is used to detect early signs of kidney damage. |
204 | $6 | $29 |
| 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. |
158 | $10 | $48 |
| 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. |
146 | $63 | $191 |
| Zoledronic acid injection, 1 mg An injection of zoledronic acid administered at a dose of 1 mg. |
120 | $6 | $150 |
| Vitamin D level test A blood test to measure the amount of Vitamin D-3 in your body. |
104 | $29 | $150 |
| Remote patient monitoring device, 30 days Initial setup of devices for remote monitoring of body functions with daily data transmission or alerts. This service covers the first 30 days of the monitoring period. |
89 | $36 | $128 |
| Urine culture, bacterial colony count A laboratory test that measures the number of bacteria growing in a urine sample to help identify infections. |
81 | $8 | $37 |
| Hormone pellet insertion under the skin A small hormone pellet is placed just beneath the skin to release medication slowly over time. |
65 | $72 | $200 |
| Unclassified drug A medication that does not fit into standard HCPCS or CPT classification categories. |
65 | $518 | $764 |
| Trabecular bone score interpretation Analysis of bone texture to assess fracture risk. The provider interprets the trabecular bone score and generates a report on the patient's risk of fractures. |
59 | $6 | $26 |
| Antibiotic sensitivity test A laboratory test that determines which antibiotics, antifungals, or antivirals are effective against a specific microorganism using microdilution or agar dilution methods. |
44 | $8 | $60 |
| Bacterial culture, aerobic A laboratory test that grows and identifies bacteria capable of surviving in oxygen. The results help determine the presence of specific aerobic microorganisms. |
43 | $8 | $100 |
| Ultrasound of head and neck soft tissue This procedure uses sound waves to create images of the soft tissues in the head and neck area. It allows for the visualization of structures beneath the skin without using radiation. |
41 | $79 | $235 |
| New patient office visit, complex (60-74 min) | 39 | $162 | $464 |
| Total testosterone level test A blood test that measures the total amount of testosterone in your body. This hormone is important for various bodily functions in both men and women. |
37 | $25 | $95 |
| Iron level test | 30 | $6 | $34 |
| 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. |
30 | $9 | $40 |
| Flu vaccine, high-dose High-dose seasonal influenza vaccine for adults aged 65 and older. Contains four times the antigen of standard-dose flu vaccines (60 mcg per strain), split-virus formulation, preservative-free, single-dose syringe. |
30 | $72 | $80 |
| Flu vaccine administration This procedure involves the administration of the influenza virus vaccine. It covers the process of delivering the vaccine to the patient. |
30 | $29 | $40 |
| Magnesium level test A blood test to measure the amount of magnesium in your body. This helps check for magnesium deficiency or excess. |
26 | $7 | $30 |
| 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. |
23 | $42 | $148 |
| Normal saline infusion, 250 cc Administration of 250 cubic centimeters of normal saline solution into a vein. This procedure involves the intravenous delivery of a sterile saltwater fluid. |
23 | $0 | $6 |
| Free T3 thyroid hormone test A blood test that measures the level of free triiodothyronine (T3) hormone in your body. This helps assess how well your thyroid gland is functioning. |
22 | $17 | $102 |
| Vitamin B-12 level test A blood test that measures the amount of vitamin B-12 in your body. |
20 | $15 | $55 |
| PSA test (prostate cancer screening) A blood test that measures the level of prostate-specific antigen to screen for prostate cancer. |
20 | $19 | $55 |
| 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. |
18 | $120 | $351 |
| Continuous glucose monitoring, sensor under skin This procedure involves continuous monitoring of blood sugar levels in tissue fluid using a sensor placed under the skin with provider-supplied equipment. |
14 | $99 | $314 |
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. A higher procedure volume generally indicates more experience with that procedure.
0.3% high complexity
38.4% medium
61.3% routine
Industry Payment Transparency
Open Payments through 2024 ↗$990,443
Total received (2018-2024)
Avg $141,492/year across 7 years
Top 0% in NC for endocrinology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
61
Companies
1,892
Individual payments
All payments are legal and publicly reported · Not evidence of wrongdoing · How to interpret →
Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$916,266 (92.5%)
Consulting
Expert advisory fees, typically reflecting recognized clinical expertise
$55,268 (5.6%)
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$18,891 (1.9%)
Other
Charitable contributions, space rental, and other categories
$18 (0.0%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$65,630
2023
$81,903
2022
$115,724
2021
$131,518
2020
$130,718
2019
$259,061
2018
$205,890
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Amgen Inc.
$23,125
Lilly USA, LLC
$19,001
Abbott Laboratories
$10,235
Eli Lilly and Company
$7,743
AstraZeneca Pharmaceuticals LP
$1,497
Bayer Healthcare Pharmaceuticals Inc.
$1,492
Tandem Diabetes Care, Inc.
$1,473
Boehringer Ingelheim Pharmaceuticals, Inc.
$252
Medtronic, Inc.
$223
Ascendis Pharma Inc
$108
Mannkind Corporation
$104
Corcept Therapeutics
$84
Novo Nordisk Inc
$79
Insulet Corporation
$61
CeQur Corporation
$46
Averitas Pharma Inc.
$27
Amneal Pharmaceuticals LLC
$20
Ascensia Diabetes Care Us Inc.
$18
Dexcom, Inc.
$15
RECORDATI_RARE_DISEASES_INC.
$14
Verity Pharmaceuticals Inc.
$14
Top 3 companies account for 79.8% of 2024 payments
All-time payments by company (2018-2024) ›
Novo Nordisk Inc
$331,128
Amgen Inc.
$206,405
Lilly USA, LLC
$100,753
SANOFI-AVENTIS U.S. LLC
$68,069
AstraZeneca Pharmaceuticals LP
$45,109
Eli Lilly and Company
$43,494
Abbott Laboratories
$40,464
Shire North American Group Inc
$35,960
Ascendis Pharma Inc
$28,684
Merck Sharp & Dohme Corporation
$26,536
Esperion Therapeutics, Inc.
$13,032
Insulet Corporation
$7,970
Amarin Pharma Inc.
$5,500
Medtronic MiniMed, Inc.
$5,252
MannKind Corporation
$5,086
Mannkind Corporation
$4,760
Bayer Healthcare Pharmaceuticals Inc.
$4,348
Novo Nordisk AS
$3,643
Dexcom, Inc.
$3,517
Radius Health, Inc.
$2,030
Tandem Diabetes Care, Inc.
$1,865
Boehringer Ingelheim International GmbH
$1,763
AstraZeneca UK Limited
$1,654
Medtronic, Inc.
$590
Boehringer Ingelheim Pharmaceuticals, Inc.
$510
Corcept Therapeutics
$359
Horizon Therapeutics plc
$299
Nevro Corp.
$148
Bayer HealthCare Pharmaceuticals Inc.
$125
Xeris Pharmaceuticals, Inc.
$122
Regeneron Healthcare Solutions, Inc.
$114
DEXCOM, INC.
$112
Kowa Pharmaceuticals America, Inc.
$100
Zealand Pharma US, Inc.
$75
IBSA Pharma Inc.
$74
PFIZER INC.
$72
Janssen Pharmaceuticals, Inc
$63
VIVUS, Inc.
$57
Ascensia Diabetes Care Us Inc.
$50
CeQur Corporation
$46
Endo Pharmaceuticals Inc.
$45
Takeda Pharmaceuticals U.S.A., Inc.
$44
Antares Pharma, Inc.
$43
AbbVie, Inc.
$43
Aytu BioScience, Inc
$33
AbbVie Inc.
$30
Averitas Pharma Inc.
$27
Companion Medical, Inc.
$26
Eisai Inc.
$26
Currax Pharmaceuticals LLC
$24
Senseonics, Incorporated
$20
Amneal Pharmaceuticals LLC
$20
Baxter Healthcare
$18
Alexion Pharmaceuticals, Inc.
$16
Nalpropion Pharmaceuticals LLC
$15
RECORDATI_RARE_DISEASES_INC.
$14
Verity Pharmaceuticals Inc.
$14
Allergan, Inc.
$13
EISAI INC.
$12
Dynavax Technologies Corporation
$12
Echosens North America, Inc.
$11
Top 3 companies account for 64.4% of all-time payments
Associated products mentioned in payments ›
AFREZZA · AVEED · BAQSIMI · BASAGLAR · BYDUREON · Belviq · CONTRAVE · CeQur Simplicity · DEXCOM CGM · DEXCOM G6 CGM SYSTEM · DEXCOM G6 TRANSMITTER · Dexcom CGM · Dexcom G6 Transmitter · EVENITY · EVERSENSE E3 SENSOR KIT - RETAIL · EVKEEZA · Eversense · FARXIGA · FIASP · FORTEO · FREESTYLE LIBRE · FREESTYLE LIBRE 2 · FREESTYLE LIBRE 3 · FREESTYLE LIBRE PRO · Fibroscan · FreeStyle Libre · FreeStyle Libre 2 · FreeStyle Libre Pro · GVOKE PFS · HUMALOG · HUMULIN · HUMULIN U · Heplisav-B · INTELLIS ADAPTIVESTIM · INVOKANA · InPen · JANUVIA · JARDIANCE · Kerendia · Korlym · LYUMJEV · Livalo · MINIMED 780G · MOUNJARO · Minimed 630G · Minimed 670G System · NATPARA · NATPARA (PARATHYROID HORMONE) · NEXLETOL · NEXLIZET · NO PRODUCT DISCUSSED · Natesto · OTREXUP · Omnia · Omnipod · Ozempic · PRALUENT · PRALUENT ALIROCUMAB INJECTION · Prolia · QSYMIA · QUTENZA · RYBELSUS · Repatha · Rybelsus · SIGNIFOR LAR · SOLIQUA · SOLIQUA 100/33 · SOMAVERT · SOTAGLIFLOZIN · STEGLATRO · SYNTHROID · Saxenda · Strensiq · Synthroid · TEPEZZA · TESTOPEL · TOUJEO · TRULICITY · TZIELD · Tirosint · Tlando · Tresiba · Tymlos · UBRELVY · UNITHROID · Vascepa · Victoza · Wegovy · XARELTO · XIAFLEX · XYOSTED · Xultophy 100/3.6 · ZEGALOGUE · t-slim insulin pump · t:slim X2 Insulin Pump with Control-IQ · t:slim X2 insulin pump
Should you be concerned? Payments from pharmaceutical and device companies are legal and common — 57% of U.S. physicians receive at least one. They often reflect legitimate consulting, research, or education. 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 →
The majority of payments (92%) are for speaking programs and promotional activities, which reflect participation in industry-sponsored educational or marketing events. This is common in endocrinology and does not inherently indicate bias, but patients may wish to be aware. Total industry engagement is in the top 0% for endocrinology in NC.
Geographic Context
Endocrinologists within 10 mi
10
Per 100K population
5.8
County median income
$58,851
Nearest hospital
ECU HEALTH MEDICAL CENTER
0.0 mi
0.0 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not public | 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. Warren is a clinical cardiology specialist, with above-average Medicare volume (top 3% in NC), with speaking/promotional industry engagement in the top 0% of NC peers, with 21 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. Warren experienced with denosumab injection (prolia/xgeva)?
Based on Medicare claims data, Dr. Warren performed 6,062 denosumab injection (prolia/xgeva) services. Research suggests that higher procedure volume is often associated with better outcomes, particularly for complex procedures. Note that Medicare data only captures patients aged 65 and older, so the total practice volume across all patients is likely higher.
Does Dr. Warren receive payments from pharmaceutical companies?
Yes. Dr. Warren received a total of $990,443 from 61 companies across 1,892 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common among physicians — 57% of all U.S. physicians receive at least one industry payment. 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. Warren's costs compare to other endocrinologists in Greenville?
Dr. Warren's average Medicare payment per service is $27. 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. Warren) 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 a long track record of practice, Medicare participation, and industry disclosure. 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?
Each data source has its own update cycle. Provider registry data (NPPES) is updated weekly. Medicare enrollment (PECOS) is updated monthly. Medicare practice data has a ~2 year lag — the most recent available is typically 2 years prior. Industry payment data (Open Payments) is published annually, usually in June, covering the prior calendar year. We display the data date prominently on each section so you always know how current it is. See our data freshness policy →
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About this page
All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): 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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