Xiao Tan, MD, PHD
Gastroenterology Physician · Boston, MA
Xiao Tan, MD, PHD is a gastroenterology physician with a practice address in Boston, Massachusetts, and NPI 1801181854, issued on Jun 16, 2011. Check the license (Massachusetts 268832, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Xiao Tan
- Credential
- MD, PHD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 268832 MA
Self-reported in NPPES; status is on the state search - Practice location
- 55 Fruit Street, Boston, MA 02114
- Phone
- (617) 643-6361
- Enumerated
- Jun 16, 2011
- Record last updated
- May 15, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (617) 724-6832
- Medicare enrollment
- Enrolled (PECOS I20170109001919); accepts Medicare assignment
- Medical or professional school
- Stanford University School Of Medicine, 2011
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 686 in Massachusetts → Look up another NPI →
Also registered at 55 Fruit Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Stephen Abraham, M.D.Specialist1487743316
- Nadia Ahmad, M.D.Internal Medicine Physician1912198037
- Fayaz Ahmed, MDStudent in an Organized Health Care Education/Training Program1528245024
- John Albin, MD, PHDInfectious Disease Physician1528472644
- Mary Amatangelo, NPAcute Care Nurse Practitioner1114191442
- Tian You An, M.D.Anesthesiology Physician1801145792
Verify Xiao 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 268832Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
77% fewer Medicare Part D claims than the average gastroenterology physician in 2024
188 Medicare Part D claims for 92 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.
Most prescribed
- Gavilyte-G46 claims
- Omeprazole37 claims
- Famotidine19 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.
Bills Medicare through 2 group practices
- Massachusetts General Physicians Organization IncBoston, MA
- The General Hospital CorporationBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Xiao Tan among 686 gastroenterology physician records in Massachusetts
Xiao Tan, MD, PHD 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 2011, is newer than 71% of them.
- NPI issued2011 · 71% of these records are older, 26% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2011 · 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 Boston → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Diane Abraczinskas, MDBoston, MA 021141811988488
- Karin Andersson, MDBoston, MA 021141972585511
- Bernard Aserkoff, MDBoston, MA 021141851381123
- Cheryl Bunker, MDBoston, MA 021141952384752
- Andrew Chan, M.D.Boston, MA 021141982600144
- Raymond Chung, MDBoston, MA 021141154311769
- Daniel Chung, MDBoston, MA 021141710978994
- Peter Kelsey, MDBoston, MA 021141255313383
Common questions
What is Xiao Tan, MD, PHD's NPI number?
Xiao Tan, MD, PHD's National Provider Identifier (NPI) is 1801181854, issued on Jun 16, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Xiao Tan, MD, PHD located?
The NPPES record lists a practice address at 55 Fruit Street, Boston, MA, 02114. Phone: (617) 643-6361. Providers update this record themselves, so call before visiting.
How can I verify Xiao Tan, MD, PHD's license?
NPPES lists Massachusetts license number 268832, 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 Xiao Tan, MD, PHD prescribe under Medicare Part D?
In 2024, Xiao Tan, MD, PHD had 188 Medicare Part D claims for 92 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.