John Stuart Ablon, PHD
Individual provider Active NPI Psychologist · Boston, MA
NPI 1629068929 · NPPES record last updated Jul 13, 2026
Key facts
- NPI
- 1629068929
- Entity type
- Individual (NPI type 1)
- Primary specialty
- Psychologist 103T00000X
- License
- 7542 (MA)
- Practice address
- 55 Fruit Street Yaw a 6900
Massachusetts General Hospital
Boston, MA 02114 - Phone
- (617) 724-5055
- Fax
- (617) 726-7541
- NPI assigned
- Oct 27, 2005
- Sex
- Male
- Sole proprietor
- No
Medicare participation
- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
National Provider Directory
- Medicare enrollment (NPD)
- Yes
- Credentials
- Doctor of Philosophy
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 7542 | MA | MD | Speech-Language Pathologist |
Specialties & licenses
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Psychologist | 103T00000X | 7542 | MA | Yes |
Addresses
Primary practice location
55 Fruit Street Yaw a 6900
Massachusetts General Hospital
Boston, MA 02114
Mailing address
PO Box 9142
Mass General Physician Organization
Charlestown, MA 02129-9142
Phone (617) 724-0287
Other providers in Boston, MA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Record last updated by the provider on Jul 13, 2026. Information in NPPES is self-reported and not verified by CMS.
- NUCC Health Care Provider Taxonomy: specialty names.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.