Edward Zimmerman, M.D.
Gastroenterology Physician · Baltimore, MD
Edward Zimmerman, M.D. is a gastroenterology physician with a practice address in Baltimore, Maryland, and NPI 1003801424, issued on Sep 12, 2005. Check the license (Maryland D0031874, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Edward Zimmerman
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- D0031874 MD
Self-reported in NPPES; status is on the state search - Practice location
- 1838 Greene Tree RD, Baltimore, MD 21208
- Phone
- (410) 602-7782
- Enumerated
- Sep 12, 2005
- Record last updated
- Jun 27, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (410) 602-2438
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 505 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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- Inna Bardoff, CRNPNurse Practitioner1801295803
- Andrew Barnstein, M.D.Cardiovascular Disease Physician1316940794
- Bruce Berger, M.D.Urology Physician1558324657
- Eric Blum, M.D.Gastroenterology Physician1447466289
- Lester Bowser, M.D.Gastroenterology Physician1043206873
Verify Edward Zimmerman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0031874Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average gastroenterology physician in 2024
14 Medicare Part D claims, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
Edward Zimmerman among 505 gastroenterology physician records in Maryland
Edward Zimmerman, M.D. is one of 505 gastroenterology physician records with a practice address in Maryland. 81% 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, 84% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 68% of these records are
- Record last updated2012 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Maryland
There are 505 gastroenterology physician records in Maryland.
All 505 in Maryland → Every provider in Baltimore → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Eric Blum, M.D.Baltimore, MD 212081447466289
- Lester Bowser, M.D.Baltimore, MD 212081043206873
- Steven Epstein, MDBaltimore, MD 212081811173636
- Ronald Ginsberg, MDBaltimore, MD 212081801877758
- Todd Heller, M.D.Baltimore, MD 212081053305763
- Loc Le, M.D.Baltimore, MD 212081194710517
- Kenolisa Onwueme, M.D., PH.D.Baltimore, MD 212081336283720
- Michael Siuta, M.D.Baltimore, MD 212081740274281
Common questions
What is Edward Zimmerman, M.D.'s NPI number?
Edward Zimmerman, M.D.'s National Provider Identifier (NPI) is 1003801424, issued on Sep 12, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Edward Zimmerman, M.D. located?
The NPPES record lists a practice address at 1838 Greene Tree RD, Baltimore, MD, 21208. Phone: (410) 602-7782. Providers update this record themselves, so call before visiting.
How can I verify Edward Zimmerman, M.D.'s license?
NPPES lists Maryland license number D0031874, 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 Edward Zimmerman, M.D. prescribe under Medicare Part D?
In 2024, Edward Zimmerman, M.D. had 14 Medicare Part D claims; the average among gastroenterology physician prescribers was 811. 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.