Joshua Steven Oppenheimer, M.D.
Emergency Medicine Physician · Frederick, MD
Joshua Steven Oppenheimer, M.D. is an emergency medicine physician with a practice address in Frederick, Maryland, and NPI 1861841447, issued on Jun 6, 2016. Check the license (Maryland D90088, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Joshua Steven Oppenheimer
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- D90088 MD
Self-reported in NPPES; status is on the state search - Practice location
- 400 W 7TH St, Frederick, MD 21701
- Phone
- (240) 566-3300
- Enumerated
- Jun 6, 2016
- Record last updated
- Sep 23, 2020 (not updated in 6 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,190 in Maryland → Look up another NPI →
Also registered at 400 W 7TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jan Abramczuk, MDAnatomic Pathology & Clinical Pathology Physician1750301719
- Esther AdejumoPhysician Assistant1194533109
- Charleen Anani, PHARMDPharmacist1619842580
- James Ansell, MDEmergency Medicine Physician1982354320
- Mustafa AzimiAcute Care Nurse Practitioner1568064046
- Justin BarnettEmergency Medicine Physician1447741863
Verify Joshua Steven Oppenheimer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D90088Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
38% fewer Medicare Part D claims than the average emergency medicine physician in 2024
141 Medicare Part D claims for 99 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.
Most prescribed
- Cefdinir21 claims
- Prednisone14 claims
- Ondansetron Hcl12 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.
Joshua Steven Oppenheimer among 1,190 emergency medicine physician records in Maryland
Joshua Steven Oppenheimer, M.D. is one of 1,190 emergency 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 2016, is newer than 78% of them.
- NPI issued2016 · 78% of these records are older, 20% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 48% of these records are
- Record last updated2020 · 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 207P00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in Maryland
There are 1,190 emergency medicine physician records in Maryland.
All 1,190 in Maryland → Every provider in Frederick → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Ashleigh Demoll Carpenter, D.O.Frederick, MD 217011598184806
- Jeffrey FillmoreFrederick, MD 217011275577090
- Michael GafneyFrederick, MD 217011972538726
- Mark KlineFrederick, MD 217011194760595
- Duc Le, MDFrederick, MD 217011295758936
- John MolesworthFrederick, MD 217011366470866
- Michael Pepper, MDFrederick, MD 217011184676256
- Karen Pheasant, DOFrederick, MD 217011992911788
Common questions
What is Joshua Steven Oppenheimer, M.D.'s NPI number?
Joshua Steven Oppenheimer, M.D.'s National Provider Identifier (NPI) is 1861841447, issued on Jun 6, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Joshua Steven Oppenheimer, M.D. located?
The NPPES record lists a practice address at 400 W 7TH St, Frederick, MD, 21701. Phone: (240) 566-3300. Providers update this record themselves, so call before visiting.
How can I verify Joshua Steven Oppenheimer, M.D.'s license?
NPPES lists Maryland license number D90088, 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 Joshua Steven Oppenheimer, M.D. prescribe under Medicare Part D?
In 2024, Joshua Steven Oppenheimer, M.D. had 141 Medicare Part D claims for 99 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.