Allen Lun Hwang, M.D., M.S.C.E.
Gastroenterology Physician · Boston, MA
Allen Lun Hwang, M.D., M.S.C.E. is a gastroenterology physician with a practice address in Boston, Massachusetts, and NPI 1558532689, issued on Mar 17, 2008. Check the license (Massachusetts 250535, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Allen Lun Hwang
- Credential
- M.D., M.S.C.E.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License numbers
- 250535 MA
A103081 CA
Self-reported in NPPES; status is on the state search - Practice location
- 800 Washington St, Boston, MA 02111
- Phone
- (617) 636-1273
- Enumerated
- Mar 17, 2008
- Record last updated
- Nov 20, 2014 (not updated in 12 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20121010000284); accepts Medicare assignment
- Medical or professional school
- Duke University School Of Medicine, 2006
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 686 in Massachusetts → Look up another NPI →
Also registered at 800 Washington St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jeffrey Aalberg, MD, MPHSurgery Physician1326788027
- Omer Abbak, PHARMDPharmacist1114500337
- Aya Abdelnaser, MDStudent in an Organized Health Care Education/Training Program1770425373
- Marie Elise Abi Antoun, MDObstetrics & Gynecology Physician1356042626
- Ahmad AboalfarajSurgery Physician1538517651
- Tala Abu Samaan, MDStudent in an Organized Health Care Education/Training Program1376386250
Verify Allen Lun Hwang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 250535Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
14% fewer Medicare Part D claims than the average gastroenterology physician in 2024
696 Medicare Part D claims for 261 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 33% of claims.
Most prescribed
- Omeprazole112 claims
- Sutab79 claims
- Creon42 claims
- Pantoprazole Sodium40 claims
- Sucralfate37 claims
- Sod Sulf-Potass Sulf-Mag Sulf36 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: $3,027.44
47 payments; by number, the most common kind was food and beverage; the largest payer was Takeda Pharmaceuticals U.S.A., Inc. 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
- Integrated Gastroenterology Consultants, P.C.Lowell, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Allen Lun Hwang among 686 gastroenterology physician records in Massachusetts
Allen Lun Hwang, M.D., M.S.C.E. is one of 686 gastroenterology physician records with a practice address in Massachusetts. 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 2008, is newer than 60% of them.
- NPI issued2008 · 60% of these records are older, 35% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2006 · median 2004 among the 491 with a school on file
- Record last updated2014 · 66% 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 Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Massachusetts
There are 686 gastroenterology physician records in Massachusetts.
All 686 in Massachusetts → Every provider in Boston → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Harmony Allison, MDBoston, MA 021111245240704
- Peter Bonis, M.D.Boston, MA 021111548462807
- Aaron Dickstein, M.D.Boston, MA 021111003059239
- Daria Homenko, M.D.Boston, MA 021111891958385
- Sushrut Jangi, MDBoston, MA 021111376770115
- Douglas Janowski, M.D.Boston, MA 021111700803855
- Raffi Karagozian, MDBoston, MA 021111356394233
- Young-Mee Lee, MDBoston, MA 021111679681399
Common questions
What is Allen Lun Hwang, M.D., M.S.C.E.'s NPI number?
Allen Lun Hwang, M.D., M.S.C.E.'s National Provider Identifier (NPI) is 1558532689, issued on Mar 17, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Allen Lun Hwang, M.D., M.S.C.E. located?
The NPPES record lists a practice address at 800 Washington St, Boston, MA, 02111. Phone: (617) 636-1273. Providers update this record themselves, so call before visiting.
How can I verify Allen Lun Hwang, M.D., M.S.C.E.'s license?
NPPES lists Massachusetts license number 250535, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Allen Lun Hwang, M.D., M.S.C.E. prescribe under Medicare Part D?
In 2024, Allen Lun Hwang, M.D., M.S.C.E. had 696 Medicare Part D claims for 261 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.