Ann Katherine Osman, M.D.
Internal Medicine Physician · Bel Air, MD
Ann Katherine Osman, M.D. is an internal medicine physician with a practice address in Bel Air, Maryland, and NPI 1184629784, issued on Jun 20, 2005. Check the license (Maryland D0036689, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Ann Katherine Osman
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- D0036689 MD
MD040013L PA
Self-reported in NPPES; status is on the state search - Practice location
- 520 Upper Chesapeake Dr, Bel Air, MD 21014
- Phone
- (410) 638-9000
- Enumerated
- Jun 20, 2005
- Record last updated
- Mar 7, 2023
- Fax
- (410) 893-5875
- Medicare enrollment
- Enrolled (PECOS I20100107000243); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,904 in Maryland → Look up another NPI →
Also registered at 520 Upper Chesapeake Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Ann Katherine Osman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0036689Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average internal medicine physician in 2024
112 Medicare Part D claims for 29 beneficiaries, 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.
Bills Medicare through one group practice
- Agape Physical Therapy And Sports Rehabilitation LPForest Hill, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ann Katherine Osman among 3,904 internal medicine physician records in Maryland
Ann Katherine Osman, M.D. 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 91% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1982 · median 2003 among the 2,445 with a school on file
- Record last updated2023 · 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).
63 internal medicine physician records list a practice address in Bel Air
They are 63 of the 1,945 NPPES records with a practice address in Bel Air, and 3,904 internal medicine physician records in Maryland.
All 3,904 in Maryland → Every provider in Bel Air → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
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- Qinglin Gao, M.D.Bel Air, MD 210141053381780
- Philip Halstead, M.D.Bel Air, MD 210141962405704
- John Lynch, MDBel Air, MD 210141194721357
- David McClure, M.D.Bel Air, MD 210141275538878
- Sherif Osman, M.D.Bel Air, MD 210141245235852
- Robert Smith, M.D.Bel Air, MD 210141265438436
Common questions
What is Ann Katherine Osman, M.D.'s NPI number?
Ann Katherine Osman, M.D.'s National Provider Identifier (NPI) is 1184629784, issued on Jun 20, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Ann Katherine Osman, M.D. located?
The NPPES record lists a practice address at 520 Upper Chesapeake Dr, Bel Air, MD, 21014. Phone: (410) 638-9000. Providers update this record themselves, so call before visiting.
How can I verify Ann Katherine Osman, M.D.'s license?
NPPES lists Maryland license number D0036689, 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 Ann Katherine Osman, M.D. prescribe under Medicare Part D?
In 2024, Ann Katherine Osman, M.D. had 112 Medicare Part D claims for 29 beneficiaries; 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.