Lynne B. Ahn, MD
Gastroenterology Physician · Framingham, MA
Lynne B. Ahn, MD is a gastroenterology physician with a practice address in Framingham, Massachusetts, and NPI 1144269143, issued on Jun 5, 2006. Check the license (Massachusetts 212256, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Lynne B. Ahn
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 212256 MA
Self-reported in NPPES; status is on the state search - Practice location
- 475 Franklin St Ste 110, Framingham, MA 01702
- Phone
- (508) 620-9200
- Enumerated
- Jun 5, 2006
- Record last updated
- Jan 3, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (508) 620-6483
- Medicare enrollment
- Enrolled (PECOS I20061220000456); accepts Medicare assignment
- Medical or professional school
- George Washington University School Of Medicine, 1994
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 686 in Massachusetts → Look up another NPI →
Also registered at 475 Franklin St Ste 110
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Merrill Adler, LICSWClinical Social Worker1760963953
- Samantha FalkowskiAdult Health Nurse Practitioner1659942902
- Lauren Heutsche, PA-CPhysician Assistant1215755103
- Samantha Newman, NPAcute Care Nurse Practitioner1710601851
Verify Lynne B. Ahn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 212256Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
76% fewer Medicare Part D claims than the average gastroenterology physician in 2024
193 Medicare Part D claims for 123 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims.
Most prescribed
- Sod Sulf-Potass Sulf-Mag Sulf73 claims
- Omeprazole24 claims
- Stelara13 claims
- Famotidine11 claims
- Pantoprazole Sodium11 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: $50.52
2 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie 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
- Harvard Medical Faculty Phys AT Beth Israel Deaconess Med Ctr IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Lynne B. Ahn among 686 gastroenterology physician records in Massachusetts
Lynne B. Ahn, MD 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 2006, is newer than 14% of them.
- NPI issued2006 · 14% of these records are older, 49% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1994 · median 2004 among the 491 with a school on file
- Record last updated2019 · 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 Framingham → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Khalid Aziz, MDFramingham, MA 017021538165055
- George Dickstein, M.D.Framingham, MA 017021720054356
- Steven Fine, M.D.Framingham, MA 017021164498457
- Andres Mogollon, M.D.Framingham, MA 017021659595429
- Ruqayah Mohammed, PA-CFramingham, MA 017021982449005
- Jaime Oviedo, M.D.Framingham, MA 017021164409421
- Mark Painter, MDFramingham, MA 017021568560878
- Greta Taitelbaum, MD CM FRCP(C) FACGFramingham, MA 017021649246273
Common questions
What is Lynne B. Ahn, MD's NPI number?
Lynne B. Ahn, MD's National Provider Identifier (NPI) is 1144269143, issued on Jun 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Lynne B. Ahn, MD located?
The NPPES record lists a practice address at 475 Franklin St Ste 110, Framingham, MA, 01702. Phone: (508) 620-9200. Providers update this record themselves, so call before visiting.
How can I verify Lynne B. Ahn, MD's license?
NPPES lists Massachusetts license number 212256, 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 Lynne B. Ahn, MD prescribe under Medicare Part D?
In 2024, Lynne B. Ahn, MD had 193 Medicare Part D claims for 123 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.