Mark O'Brien Peeler, MD
Surgery Physician · Annapolis, MD
Mark O'Brien Peeler, MD is a surgery physician with a practice address in Annapolis, Maryland, and NPI 1316931421, issued on Sep 2, 2005. Check the license (Maryland D0056208, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Mark O'Brien Peeler
- Credential
- MD
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- D0056208 MD
Self-reported in NPPES; status is on the state search - Practice location
- 2002 Medical Pkwy, Annapolis, MD 21401
- Phone
- (410) 266-1188
- Enumerated
- Sep 2, 2005
- Record last updated
- Jan 24, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (410) 266-9466
- Medicaid ID
- 243601900 MD
- Medicare enrollment
- Enrolled (PECOS I20031112000753); accepts Medicare assignment
- Medical or professional school
- Johns Hopkins University School Of Medicine, 1992
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 672 in Maryland → Look up another NPI →
Also registered at 2002 Medical Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Bolanle Akinyele, M.D.Cardiovascular Disease Physician1265788152
- Jonathan Altschuler, M.D.Cardiovascular Disease Physician1013924950
- Bryan Ambro, MDPlastic Surgery within the Head & Neck (Otolaryngology) Physician1821176017
- Michael-Anne Ashford, PA-CMedical Physician Assistant1447500707
- Samuel Barone, MDOphthalmology Physician1932256153
Verify Mark O'Brien Peeler in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0056208Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
61% fewer Medicare Part D claims than the average surgery physician in 2024
58 Medicare Part D claims for 44 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. 31 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen26 claims
- Clopidogrel19 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.
Industry payments in 2024: $424.23
4 payments; by number, the most common kind was food and beverage; the largest payer was Cook Medical LLC. The 17,103 providers of this specialty with any payment received $3,513.80 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 2 group practices
- Medstar Heart Institute LLCChester, MD
- Medstar Medical Group II LLCBaltimore, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark O'Brien Peeler among 672 surgery physician records in Maryland
Mark O'Brien Peeler, MD is one of 672 surgery physician records with a practice address in Maryland. 69% 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, 90% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated1992 · median 2003 among the 385 with a school on file
- Record last updated2011 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgery Physician providers in Maryland
There are 672 surgery physician records in Maryland.
All 672 in Maryland → Every provider in Annapolis → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Robert Buras, MDAnnapolis, MD 214011740269950
- Gary Della'Zanna, DOAnnapolis, MD 214011437146420
- Mario Diaz, MDAnnapolis, MD 214011508803693
- Lara Dimick-Santos, MDAnnapolis, MD 214011952398950
- Alejandro Gandsas, M.D.Annapolis, MD 214011215987417
- Wen Liang, DOAnnapolis, MD 214011104815059
- Frank Lin, MDAnnapolis, MD 214011619964624
- Gina Massoglia, MDAnnapolis, MD 214011760470157
Common questions
What is Mark O'Brien Peeler, MD's NPI number?
Mark O'Brien Peeler, MD's National Provider Identifier (NPI) is 1316931421, issued on Sep 2, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mark O'Brien Peeler, MD located?
The NPPES record lists a practice address at 2002 Medical Pkwy, Annapolis, MD, 21401. Phone: (410) 266-1188. Providers update this record themselves, so call before visiting.
How can I verify Mark O'Brien Peeler, MD's license?
NPPES lists Maryland license number D0056208, 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 O'Brien Peeler, MD prescribe under Medicare Part D?
In 2024, Mark O'Brien Peeler, MD had 58 Medicare Part D claims for 44 beneficiaries; the average among surgery physician prescribers was 147. Part D covers Medicare prescriptions only.
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.