Margaret Perusse Oberman, M.D.
Internal Medicine Physician · Frederick, MD
Margaret Perusse Oberman, M.D. is an internal medicine physician with a practice address in Frederick, Maryland, and NPI 1972583581, issued on Jan 19, 2006. Check the license (Maryland D77143, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Margaret Perusse Oberman
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- D77143 MD
0101056083 VA
Self-reported in NPPES; status is on the state search - Practice location
- 1562 Opossumtown Pike, Frederick, MD 21702
- Phone
- (301) 662-8119
- Enumerated
- Jan 19, 2006
- Record last updated
- Jul 30, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (240) 439-8910
- Medicare enrollment
- Enrolled (PECOS I20180829003410); accepts Medicare assignment
- Medical or professional school
- Tufts University School Of Medicine, 1996
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,904 in Maryland → Look up another NPI →
Also registered at 1562 Opossumtown Pike
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Margaret Perusse Oberman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D77143Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
1% fewer Medicare Part D claims than the average internal medicine physician in 2024
3,149 Medicare Part D claims for 440 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 36 claims were for opioids.
Most prescribed
- Amlodipine Besylate196 claims
- Levothyroxine Sodium194 claims
- Atorvastatin Calcium124 claims
- Lisinopril106 claims
- Pravastatin Sodium81 claims
- Losartan Potassium71 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.
Bills Medicare through 3 group practices
- Amber Hill Physical Therapy IncFrederick, MD
- Frederick Health Hospital IncBrunswick, MD
- Frederick Health Medical Group LLCFrederick, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Margaret Perusse Oberman among 3,904 internal medicine physician records in Maryland
Margaret Perusse Oberman, 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 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 55% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1996 · median 2003 among the 2,445 with a school on file
- Record last updated2019 · 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).
59 internal medicine physician records list a practice address in Frederick
They are 59 of the 3,981 NPPES records with a practice address in Frederick, and 3,904 internal medicine physician records in Maryland.
All 3,904 in Maryland → Every provider in Frederick → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Darrell Apple, M.D.Frederick, MD 217021326024407
- Susan Brinkley, M.D.Frederick, MD 217021184648198
- Julian Choe, M.D.Frederick, MD 217021528001203
- Andrew Donelson, M.D.Frederick, MD 217021518996495
- Richard Hill, MDFrederick, MD 217021477560944
- Robert Kaufmann, M.D.Frederick, MD 217021205817384
- Kevin Leary, M.D.Frederick, MD 217021841248861
- Narayan Nair, M.D.Frederick, MD 217021518912724
Common questions
What is Margaret Perusse Oberman, M.D.'s NPI number?
Margaret Perusse Oberman, M.D.'s National Provider Identifier (NPI) is 1972583581, issued on Jan 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Margaret Perusse Oberman, M.D. located?
The NPPES record lists a practice address at 1562 Opossumtown Pike, Frederick, MD, 21702. Phone: (301) 662-8119. Providers update this record themselves, so call before visiting.
How can I verify Margaret Perusse Oberman, M.D.'s license?
NPPES lists Maryland license number D77143, 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 Margaret Perusse Oberman, M.D. prescribe under Medicare Part D?
In 2024, Margaret Perusse Oberman, M.D. had 3,149 Medicare Part D claims for 440 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.