Mark G. Nelson, M.D.
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Cumberland, MD
Mark G. Nelson, M.D. is a thoracic surgery (cardiothoracic vascular surgery) physician with a practice address in Cumberland, Maryland, and NPI 1134111743, issued on Aug 19, 2005. Check the license (Maryland D0056355, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Mark G. Nelson
- Credential
- M.D.
- Primary taxonomy
- Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician 208G00000X
- License number
- D0056355 MD
Self-reported in NPPES; status is on the state search - Practice location
- 12502 Willowbrook RD, Cumberland, MD 21502
- Phone
- (240) 964-8724
- Enumerated
- Aug 19, 2005
- Record last updated
- Feb 24, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (240) 964-8735
- Medicare enrollment
- Enrolled (PECOS I20101019000012); accepts Medicare assignment
- Medical or professional school
- University Of Maryland School Of Medicine, 1987
- Entity
- Type 1 · individual
8 nearest thoracic surgery (cardiothoracic vascular surgery) physician records → All 92 in Maryland → Look up another NPI →
Also registered at 12502 Willowbrook RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Krystal Abucevicz-Swick, CRNPNurse Practitioner1750867362
- Juan Arrisueno, M.D., PASurgery Physician1851393565
- Sheba Asghar, M.D.Endocrinology, Diabetes & Metabolism Physician1780865758
- Syed Zain Ayaz, M.DCritical Care Medicine (Internal Medicine) Physician1437405388
- Ayham Bataineh, M.D.Critical Care Medicine (Internal Medicine) Physician1972904365
- Sheena Buskirk, DOFamily Medicine Physician1396273520
Verify Mark G. Nelson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0056355Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
50% fewer Medicare Part D claims than the average thoracic surgery (cardiothoracic vascular surgery) physician in 2024
51 Medicare Part D claims for 36 beneficiaries, against an average of 101 among the 2,587 providers of this specialty who prescribed in Part D.
Most prescribed
- Clopidogrel12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 86.9 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $42.28
2 payments; by number, the most common kind was food and beverage; the largest payer was Atricure, Inc. The 4,047 providers of this specialty with any payment received $7,828.84 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Upmc Western Maryland Health Services LLCCumberland, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark G. Nelson among 92 thoracic surgery (cardiothoracic vascular surgery) physician records in Maryland
Mark G. Nelson, M.D. is one of 92 thoracic surgery (cardiothoracic vascular surgery) physician records with a practice address in Maryland. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 85% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated1987 · median 1996 among the 46 with a school on file
- Record last updated2010 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208G00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician providers in Maryland
There are 92 thoracic surgery (cardiothoracic vascular surgery) physician records in Maryland.
All 92 in Maryland → Every provider in Cumberland → Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician nationwide →
The 8 thoracic surgery (cardiothoracic vascular surgery) physician records with the nearest ZIP codes
- Peter Horneffer, MDCumberland, MD 215021437145356
- Stephen Cattaneo, M.D.Annapolis, MD 214011356491450
- Karl Holschuh, MDAnnapolis, MD 214011548269343
- Avedis Meneshian, M.D.Annapolis, MD 214011669522751
- David Myers, M.D., F.A.C.S.Annapolis, MD 214011033745336
- Mark Soberman, M.D.Frederick, MD 217011407817018
- Stephen Broderick, MDBaltimore, MD 212871699934828
- Duke Cameron, M.D.Baltimore, MD 212871336107689
Common questions
What is Mark G. Nelson, M.D.'s NPI number?
Mark G. Nelson, M.D.'s National Provider Identifier (NPI) is 1134111743, issued on Aug 19, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mark G. Nelson, M.D. located?
The NPPES record lists a practice address at 12502 Willowbrook RD, Cumberland, MD, 21502. Phone: (240) 964-8724. Providers update this record themselves, so call before visiting.
How can I verify Mark G. Nelson, M.D.'s license?
NPPES lists Maryland license number D0056355, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark G. Nelson, M.D. prescribe under Medicare Part D?
In 2024, Mark G. Nelson, M.D. had 51 Medicare Part D claims for 36 beneficiaries; the average among thoracic surgery (cardiothoracic vascular surgery) physician prescribers was 101. Part D covers Medicare prescriptions only.
What is Mark G. Nelson, M.D.'s MIPS final score?
The 2023 MIPS final score is 86.9 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.