Peter Oroszlan, MD
Internal Medicine Physician · Pikesville, MD
Peter Oroszlan, MD is an internal medicine physician with a practice address in Pikesville, Maryland, and NPI 1386823904, issued on Oct 31, 2007. Check the license (Maryland D0016285, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Peter Oroszlan
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- D0016285 MD
Self-reported in NPPES; status is on the state search - Practice location
- 1838 Greene Tree RD, Pikesville, MD 21208
- Phone
- (410) 653-0366
- Enumerated
- Oct 31, 2007
- Record last updated
- Oct 31, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (410) 653-2527
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,904 in Maryland → Look up another NPI →
Also registered at 1838 Greene Tree RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Peter Oroszlan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0016285Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
32 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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.
Peter Oroszlan among 3,904 internal medicine physician records in Maryland
Peter Oroszlan, MD is one of 3,904 internal medicine physician records with a practice address in Maryland. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 45% of them.
- NPI issued2007 · 45% of these records are older, 44% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2007 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
26 internal medicine physician records list a practice address in Pikesville
They are 26 of the 2,412 NPPES records with a practice address in Pikesville, and 3,904 internal medicine physician records in Maryland.
All 3,904 in Maryland → Every provider in Pikesville → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Karen Babitt, MDBaltimore, MD 212081073583787
- Margaret Cuffy, M.D.Pikesville, MD 212081609831692
- Jerome Ginsberg, MDPikesville, MD 212081023087061
- Craig Gold, M.D.Pikesville, MD 212081164488292
- Michaelle Halaby Holmes, MDPikesville, MD 212081932105137
- John Lah, M.D.11Pikesville, MD 212081215994272
- Jacob Levine, M.D.Pikesville, MD 212081396784245
- Steven Miller, M.D.Pikesville, MD 212081003874355
Common questions
What is Peter Oroszlan, MD's NPI number?
Peter Oroszlan, MD's National Provider Identifier (NPI) is 1386823904, issued on Oct 31, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Peter Oroszlan, MD located?
The NPPES record lists a practice address at 1838 Greene Tree RD, Pikesville, MD, 21208. Phone: (410) 653-0366. Providers update this record themselves, so call before visiting.
How can I verify Peter Oroszlan, MD's license?
NPPES lists Maryland license number D0016285, 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 Peter Oroszlan, MD prescribe under Medicare Part D?
In 2024, Peter Oroszlan, MD had 32 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. 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.