Samuel Hsu, M.D.
Emergency Medicine Physician · Baltimore, MD
Samuel Hsu, M.D. is an emergency medicine physician with a practice address in Baltimore, Maryland, and NPI 1609804178, issued on Jun 30, 2006. Check the license (Maryland D0041734, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Samuel Hsu
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- D0041734 MD
Self-reported in NPPES; status is on the state search - Practice location
- 22 S Greene St, Baltimore, MD 21201
- Phone
- (410) 821-4140
- Enumerated
- Jun 30, 2006
- Record last updated
- Jun 8, 2010 (not updated in 16 years: call before relying on the address or phone)
- Medicaid ID
- 589604500 MD
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,190 in Maryland → Look up another NPI →
Also registered at 22 S Greene St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Samuel Hsu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0041734Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
55% fewer Medicare Part D claims than the average emergency medicine physician in 2024
101 Medicare Part D claims for 80 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 29 claims were for opioids.
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.
Samuel Hsu among 1,190 emergency medicine physician records in Maryland
Samuel Hsu, 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 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 59% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 48% of these records are
- Record last updated2010 · 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).
505 emergency medicine physician records list a practice address in Baltimore
They are 505 of the 35,183 NPPES records with a practice address in Baltimore, and 1,190 emergency medicine physician records in Maryland.
All 1,190 in Maryland → Every provider in Baltimore → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Charles Bergman, M.D.Baltimore, MD 212011962468306
- Michael Bond, M.D.Baltimore, MD 212011184665739
- Laura Bontempo, MDBaltimore, MD 212011356330104
- Brian BrowneBaltimore, MD 212011932152790
- Rose ChasmBaltimore, MD 212011528002359
- Marcia CortBaltimore, MD 212011487698775
- Wade Gaasch, M.D.Baltimore, MD 212011407898273
- Katherine GrundmannBaltimore, MD 212011487696258
Common questions
What is Samuel Hsu, M.D.'s NPI number?
Samuel Hsu, M.D.'s National Provider Identifier (NPI) is 1609804178, issued on Jun 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Samuel Hsu, M.D. located?
The NPPES record lists a practice address at 22 S Greene St, Baltimore, MD, 21201. Phone: (410) 821-4140. Providers update this record themselves, so call before visiting.
How can I verify Samuel Hsu, M.D.'s license?
NPPES lists Maryland license number D0041734, 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 Samuel Hsu, M.D. prescribe under Medicare Part D?
In 2024, Samuel Hsu, M.D. had 101 Medicare Part D claims for 80 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.