Debbie-Ann L. Tan, M.D.
Internal Medicine Physician · Fall River, MA
Debbie-Ann L. Tan, M.D. is an internal medicine physician with a practice address in Fall River, Massachusetts, and NPI 1265498851, issued on Apr 24, 2006. Check the license (Massachusetts 81849, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Debbie-Ann L. Tan
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 81849 MA
Self-reported in NPPES; status is on the state search - Practice location
- 277 Pleasant St, Fall River, MA 02721
- Phone
- (508) 676-3292
- Enumerated
- Apr 24, 2006
- Record last updated
- Aug 31, 2012 (not updated in 14 years: call before relying on the address or phone)
- Medicaid ID
- 3144097 MA
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →
Also registered at 277 Pleasant St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lobna Abdelwahab, MDNeurology Physician1033747514
- Ramy Abu Sukheila, M.DHospitalist Physician1538548706
- Sofia Adamidi, MDHospitalist Physician1528553229
- Mahmood Ahmad, M.DInternal Medicine Physician1073853685
- Samih AlhouraniHospitalist Physician1952822496
- Victoria Almeida, FNPFamily Nurse Practitioner1588396758
Verify Debbie-Ann L. Tan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 81849Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
32% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,159 Medicare Part D claims for 284 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium176 claims
- Levothyroxine Sodium113 claims
- Lisinopril107 claims
- Simvastatin104 claims
- Omeprazole82 claims
- Losartan Potassium73 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.
Debbie-Ann L. Tan among 6,825 internal medicine physician records in Massachusetts
Debbie-Ann L. Tan, M.D. is one of 6,825 internal medicine physician records with a practice address in Massachusetts. 75% 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 12% of them.
- NPI issued2006 · 12% of these records are older, 54% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 60% of these records are
- Record last updated2012 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
62 internal medicine physician records list a practice address in Fall River
They are 62 of the 3,032 NPPES records with a practice address in Fall River, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in Fall River → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Jorge Andrade, MDFall River, MA 027211942261490
- Neveen Bassaly, M.D.Fall River, MA 027211649274911
- Melanie Cardoza, DOFall River, MA 027211427007921
- Tricia Carty, MDFall River, MA 027211053308171
- Bill Grossman, M.D.Fall River, MA 027211598702797
- Christopher Joncas, MDFall River, MA 027211336136456
- Hany Mistikawy, M.D.Fall River, MA 027211851399034
- Jose Monteiro, MDFall River, MA 027211548203219
Common questions
What is Debbie-Ann L. Tan, M.D.'s NPI number?
Debbie-Ann L. Tan, M.D.'s National Provider Identifier (NPI) is 1265498851, issued on Apr 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Debbie-Ann L. Tan, M.D. located?
The NPPES record lists a practice address at 277 Pleasant St, Fall River, MA, 02721. Phone: (508) 676-3292. Providers update this record themselves, so call before visiting.
How can I verify Debbie-Ann L. Tan, M.D.'s license?
NPPES lists Massachusetts license number 81849, 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 Debbie-Ann L. Tan, M.D. prescribe under Medicare Part D?
In 2024, Debbie-Ann L. Tan, M.D. had 2,159 Medicare Part D claims for 284 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.