Alan Hsu
Emergency Medicine Physician · Rockville, MD
Alan Hsu is an emergency medicine physician with a practice address in Rockville, Maryland, and NPI 1588081509, issued on Mar 27, 2014. Check the license (Maryland 1315, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Alan Hsu
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 1315 MD
Self-reported in NPPES; status is on the state search - Practice location
- 9901 Medical Center Dr, Rockville, MD 20850
- Phone
- (240) 826-6000
- Enumerated
- Mar 27, 2014
- Record last updated
- Sep 21, 2021 (not updated in 5 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 9901 Medical Center Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Crystal Addison, P.T.Physical Therapist1407079577
- Olatejumade AdegbenroPharmacist1366889768
- Aaron Adler, PA-CPhysician Assistant1346571767
- Mehrdad Akhlaghi, MDInternal Medicine Physician1124019062
- Nelson Akwo, PHARM.D.Pharmacist1902054273
- Jude Alexander, MDPsychiatry Physician1093706939
Verify Alan Hsu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license 1315Check 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
139 Medicare Part D claims for 101 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 12 claims were for opioids.
Most prescribed
- Ondansetron Odt16 claims
- Cyclobenzaprine Hcl11 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.
Alan Hsu among 1,190 emergency medicine physician records in Maryland
Alan Hsu 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 2014, is newer than 72% of them.
- NPI issued2014 · 72% of these records are older, 25% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 48% of these records are
- Record last updated2021 · 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 Rockville → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Joel Buzy, MDRockville, MD 208501558316844
- Michael Cetta, MDRockville, MD 208501609803345
- William DooleyRockville, MD 208501588689327
- Angelo Falcone, MDRockville, MD 208501295762698
- Manish Gambhir, M.D.Rockville, MD 208501265428502
- Brett Gamma, MDRockville, MD 208501215980255
- Amit Kalaria, M.D.Rockville, MD 208501578510897
- Tamara Kile, D.O.Rockville, MD 208501730143694
Common questions
What is Alan Hsu's NPI number?
Alan Hsu's National Provider Identifier (NPI) is 1588081509, issued on Mar 27, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Alan Hsu located?
The NPPES record lists a practice address at 9901 Medical Center Dr, Rockville, MD, 20850. Phone: (240) 826-6000. Providers update this record themselves, so call before visiting.
How can I verify Alan Hsu's license?
NPPES lists Maryland license number 1315, 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 Alan Hsu prescribe under Medicare Part D?
In 2024, Alan Hsu had 139 Medicare Part D claims for 101 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.