Leon Gilbert Sheer, M.D.
Internal Medicine Physician · Wittman, MD
Leon Gilbert Sheer, M.D. is an internal medicine physician with a practice address in Wittman, Maryland, and NPI 1689649642, issued on Feb 22, 2006. Check the license (Maryland D0010246, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Leon Gilbert Sheer
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- D0010246 MD
Self-reported in NPPES; status is on the state search - Practice location
- 8603 Sewell RD, Wittman, MD 21676
- Phone
- (400) 745-6746
- Enumerated
- Feb 22, 2006
- Record last updated
- Jun 27, 2011 (not updated in 15 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,904 in Maryland → Look up another NPI →
Verify Leon Gilbert Sheer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0010246Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
100% fewer Medicare Part D claims than the average internal medicine physician in 2024
11 Medicare Part D claims, against an average of 3,176 among the 108,855 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.
Leon Gilbert Sheer among 3,904 internal medicine physician records in Maryland
Leon Gilbert Sheer, 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 fileNo · 63% of these records are
- Record last updated2011 · 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).
Internal Medicine Physician providers in Maryland
There are 3,904 internal medicine physician records in Maryland.
All 3,904 in Maryland → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Robert Patterson, M.D.St Michaels, MD 216631033201355
- Daniel Konick, M.D.Queenstown, MD 216581336140748
- Sajjad Aziz, MDFrederick, MD 217011457336554
- Michael Flessner, MDFrederick, MD 217011669401857
- James Grissom, M.D.Frederick, MD 217011881695898
- Syed Haque, M.D.Frederick, MD 217011952390205
- Safrina Hasan, DOFrederick, MD 217011679524540
- Sibte Kazmi, MDFrederick, MD 217011861451361
Common questions
What is Leon Gilbert Sheer, M.D.'s NPI number?
Leon Gilbert Sheer, M.D.'s National Provider Identifier (NPI) is 1689649642, issued on Feb 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Leon Gilbert Sheer, M.D. located?
The NPPES record lists a practice address at 8603 Sewell RD, Wittman, MD, 21676. Phone: (400) 745-6746. Providers update this record themselves, so call before visiting.
How can I verify Leon Gilbert Sheer, M.D.'s license?
NPPES lists Maryland license number D0010246, 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 Leon Gilbert Sheer, M.D. prescribe under Medicare Part D?
In 2024, Leon Gilbert Sheer, M.D. had 11 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.