John Joseph Marion
Physical Therapist · Boston, MA
John Joseph Marion is a physical therapist with a practice address in Boston, Massachusetts, and NPI 1427872340, issued on Nov 8, 2024. Check the license with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- John Joseph Marion
- Primary taxonomy
- Physical Therapist 225100000X
- Practice location
- 10 High St Ste 303, Boston, MA 02110
- Phone
- (617) 542-6999
- Enumerated
- Nov 8, 2024
- Record last updated
- Nov 8, 2024
- Fax
- (617) 542-6985
- Medicare enrollment
- Enrolled (PECOS I20241202001829); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physical therapist records → All 7,100 in Massachusetts → Look up another NPI →
Also registered at 10 High St Ste 303
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Liam BryantPhysical Therapist1346765120
- Elvin ChangPhysical Therapist1780426908
- Seth Gresham, DPTPhysical Therapist1699334169
- Jiawen Kang, PT, DPTPhysical Therapist1235893595
Verify John Joseph Marion in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Proex Physical Therapy LLCBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Joseph Marion among 7,100 physical therapist records in Massachusetts
John Joseph Marion is one of 7,100 physical therapist records with a practice address in Massachusetts. 31% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2024, is newer than 89% of them.
- NPI issued2024 · 89% of these records are older, 7% newer
- In a Medicare fileYes · 31% of these records are
- In the CMS Doctors and Clinicians fileYes · 33% of these records are
- Graduated2024 · median 2017 among the 2,371 with a school on file
- Record last updated2024 · 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 225100000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
810 physical therapist records list a practice address in Boston
They are 810 of the 41,865 NPPES records with a practice address in Boston, and 7,100 physical therapist records in Massachusetts.
All 7,100 in Massachusetts → Every provider in Boston → Physical Therapist nationwide →
The 8 physical therapist records with the nearest ZIP codes
- Georgios Adamakis, MSPTBoston, MA 021101407395296
- Joseph Adams, DPTBoston, MA 021101720577331
- Samuel BrownBoston, MA 021101437704186
- Liam BryantBoston, MA 021101346765120
- Constance DouglassBoston, MA 021101235539743
- Seth Gresham, DPTBoston, MA 021101699334169
- Diem Ha, DPTBoston, MA 021101821246174
- Geoffrey KellerBoston, MA 021101881998599
Common questions
What is John Joseph Marion's NPI number?
John Joseph Marion's National Provider Identifier (NPI) is 1427872340, issued on Nov 8, 2024. An NPI identifies a provider in billing; it is not a license.
Where is John Joseph Marion located?
The NPPES record lists a practice address at 10 High St Ste 303, Boston, MA, 02110. Phone: (617) 542-6999. Providers update this record themselves, so call before visiting.
How can I verify John Joseph Marion's license?
Search the Massachusetts board that licenses this profession; the NPPES record confirms identity 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.