Joseph Ahn, M.D.
Psychiatry Physician · Boston, MA
Joseph Ahn, M.D. is a psychiatry physician with a practice address in Boston, Massachusetts, and NPI 1477812733, issued on May 8, 2012. Check the license (Massachusetts 267629, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Joseph Ahn
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 267629 MA
Self-reported in NPPES; status is on the state search - Practice location
- 55 Fruit St # 812, Boston, MA 02114
- Phone
- (617) 724-5600
- Enumerated
- May 8, 2012
- Record last updated
- Mar 18, 2025
- Medicare enrollment
- Enrolled (PECOS I20171017002512); accepts Medicare assignment
- Medical or professional school
- Creighton University School Of Medicine, 2012
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 2,736 in Massachusetts → Look up another NPI →
Also registered at 55 Fruit St # 812
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Justine Mann, MDPsychiatry Physician1235524828
Verify Joseph 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 267629Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
69% more Medicare Part D claims than the average psychiatry physician in 2024
1,688 Medicare Part D claims for 182 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims.
Most prescribed
- Clonazepam135 claims
- Lorazepam114 claims
- Bupropion Xl108 claims
- Sertraline Hcl80 claims
- Trazodone Hcl73 claims
- Venlafaxine Hcl Er73 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 one group practice
- The General Hospital CorporationBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joseph Ahn among 2,736 psychiatry physician records in Massachusetts
Joseph Ahn, M.D. is one of 2,736 psychiatry physician records with a practice address in Massachusetts. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 72% of them.
- NPI issued2012 · 72% of these records are older, 26% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileYes · 45% of these records are
- Graduated2012 · median 2005 among the 1,219 with a school on file
- Record last updated2025 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
845 psychiatry physician records list a practice address in Boston
They are 845 of the 41,865 NPPES records with a practice address in Boston, and 2,736 psychiatry physician records in Massachusetts.
All 2,736 in Massachusetts → Every provider in Boston → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Steven Ablon, MDBoston, MA 021141083604839
- Barbara Beck, MDBoston, MA 021141720078272
- Judith Edersheim, MDBoston, MA 021141154311835
- Karleyton Evans, MDBoston, MA 021141407846058
- James Groves, MDBoston, MA 021141013906015
- John Herman, MDBoston, MA 021141275523961
- Rakesh Karmacharya, MD PHDBoston, MA 021141720078389
- Vaughn Mankey, MDBoston, MA 021141225028954
Common questions
What is Joseph Ahn, M.D.'s NPI number?
Joseph Ahn, M.D.'s National Provider Identifier (NPI) is 1477812733, issued on May 8, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Joseph Ahn, M.D. located?
The NPPES record lists a practice address at 55 Fruit St # 812, Boston, MA, 02114. Phone: (617) 724-5600. Providers update this record themselves, so call before visiting.
How can I verify Joseph Ahn, M.D.'s license?
NPPES lists Massachusetts license number 267629, 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 Joseph Ahn, M.D. prescribe under Medicare Part D?
In 2024, Joseph Ahn, M.D. had 1,688 Medicare Part D claims for 182 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.