Brian C. Shen, MD
Internal Medicine Physician · Gaithersburg, MD
Brian C. Shen, MD is an internal medicine physician with a practice address in Gaithersburg, Maryland, and NPI 1538232723, issued on Nov 16, 2006. Check the license (Maryland D0050209, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Brian C. Shen
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- D0050209 MD
MD22160 DC
0101059128 VA
Self-reported in NPPES; status is on the state search - Practice location
- 501 N Frederick Ave, Gaithersburg, MD 20877
- Phone
- (301) 258-7245
- Enumerated
- Nov 16, 2006
- Record last updated
- Dec 3, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (301) 258-7294
- Medicare enrollment
- Enrolled (PECOS I20090626000476); 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 501 N Frederick Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Brian C. Shen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0050209Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.2 times the Medicare Part D claims of the average internal medicine physician in 2024
10,157 Medicare Part D claims for 800 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. 136 claims were for opioids.
Most prescribed
- Atorvastatin Calcium1,441 claims
- Amlodipine Besylate645 claims
- Lisinopril487 claims
- Metformin Hcl406 claims
- Losartan Potassium392 claims
- Levothyroxine Sodium356 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 one group practice
- Kaiser Foundation Health Plan OF The Mid Atlantic States, IncWashington, DC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Brian C. Shen among 3,904 internal medicine physician records in Maryland
Brian C. Shen, MD 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
- Graduated1983 · median 2003 among the 2,445 with a school on file
- Record last updated2021 · 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).
67 internal medicine physician records list a practice address in Gaithersburg
They are 67 of the 2,580 NPPES records with a practice address in Gaithersburg, and 3,904 internal medicine physician records in Maryland.
All 3,904 in Maryland → Every provider in Gaithersburg → Internal Medicine Physician nationwide →
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Common questions
What is Brian C. Shen, MD's NPI number?
Brian C. Shen, MD's National Provider Identifier (NPI) is 1538232723, issued on Nov 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Brian C. Shen, MD located?
The NPPES record lists a practice address at 501 N Frederick Ave, Gaithersburg, MD, 20877. Phone: (301) 258-7245. Providers update this record themselves, so call before visiting.
How can I verify Brian C. Shen, MD's license?
NPPES lists Maryland license number D0050209, 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 Brian C. Shen, MD prescribe under Medicare Part D?
In 2024, Brian C. Shen, MD had 10,157 Medicare Part D claims for 800 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.