Andrew J. Hsu, M.D.
Gastroenterology Physician · Portland, ME
Andrew J. Hsu, M.D. is a gastroenterology physician with a practice address in Portland, Maine, and NPI 1003270471, issued on Apr 11, 2016. Check the license (Maine MD27103, as entered in NPPES) on the Maine Board of Licensure in Medicine; the Medicare figures below come from public CMS files.
- Name
- Andrew J. Hsu
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License numbers
- MD27103 ME
22622 NH
Self-reported in NPPES; status is on the state search - Practice location
- 155 Fore River Pkwy, Portland, ME 04102
- Phone
- (207) 535-1100
- Enumerated
- Apr 11, 2016
- Record last updated
- Aug 23, 2023
- Fax
- (207) 879-8787
- Medicare enrollment
- Enrolled (PECOS I20230607002543); accepts Medicare assignment
- Medical or professional school
- New York University School Of Medicine, 2016
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 86 in Maine → Look up another NPI →
Also registered at 155 Fore River Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Hannah Andrews, NPFamily Nurse Practitioner1174401509
- Sarah Boyne, NPFamily Nurse Practitioner1104087212
- Tammie Hutchinson, FNP-CFamily Nurse Practitioner1376250068
Verify Andrew J. Hsu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaine Board of Licensure in Medicine
Search for license MD27103Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
41% fewer Medicare Part D claims than the average gastroenterology physician in 2024
478 Medicare Part D claims for 169 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Pantoprazole Sodium141 claims
- Omeprazole88 claims
- Famotidine32 claims
- Eliquis18 claims
- Dicyclomine Hcl16 claims
- Mesalamine15 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.
Industry payments in 2024: $35.46
1 payment: food and beverage; the largest payer was Stryker Corporation. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Mercy HospitalPortland, ME
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Andrew J. Hsu among 86 gastroenterology physician records in Maine
Andrew J. Hsu, M.D. is one of 86 gastroenterology physician records with a practice address in Maine. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 87% of them.
- NPI issued2016 · 87% of these records are older, 9% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated2016 · median 2003 among the 61 with a school on file
- Record last updated2023 · 41% 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 Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Maine
There are 86 gastroenterology physician records in Maine.
All 86 in Maine → Every provider in Portland → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Newell Augur, MDPortland, ME 041021356569529
- Luke Chmielecki, MDPortland, ME 041021548897929
- Martin Moehlen, M.D.Portland, ME 041021104006279
- Michael Roy, M.D.Portland, ME 041021134227994
- Shadab Saboori, MD, MPHPortland, ME 041021558865790
- Curtis Winchenbach, MDPortland, ME 041021417043712
- Adam Winters, MDPortland, ME 041021700270352
- Sara ZelmanPortland, ME 041021487217295
Common questions
What is Andrew J. Hsu, M.D.'s NPI number?
Andrew J. Hsu, M.D.'s National Provider Identifier (NPI) is 1003270471, issued on Apr 11, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Andrew J. Hsu, M.D. located?
The NPPES record lists a practice address at 155 Fore River Pkwy, Portland, ME, 04102. Phone: (207) 535-1100. Providers update this record themselves, so call before visiting.
How can I verify Andrew J. Hsu, M.D.'s license?
NPPES lists Maine license number MD27103, as entered by the provider. Search the Maine Board of Licensure in Medicine at https://www.maine.gov/md/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Andrew J. Hsu, M.D. prescribe under Medicare Part D?
In 2024, Andrew J. Hsu, M.D. had 478 Medicare Part D claims for 169 beneficiaries; 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.