William Brown
Physical Therapist · Chelsea, MA
William Brown is a physical therapist with a practice address in Chelsea, Massachusetts, and NPI 1841177714, issued on Aug 20, 2025. Check the license (Massachusetts 88690, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William Brown
- Primary taxonomy
- Physical Therapist 225100000X
- License number
- 88690 MA
Self-reported in NPPES; status is on the state search - Practice location
- 99 4TH St Ste 102, Chelsea, MA 02150
- Phone
- (617) 889-2500
- Enumerated
- Aug 20, 2025
- Record last updated
- Aug 20, 2025
- Medicare enrollment
- Enrolled (PECOS I20250904001092); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physical therapist records → All 7,100 in Massachusetts → Look up another NPI →
Also registered at 99 4TH St Ste 102
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Anna Hnasko, P.T.Physical Therapist1255563839
Verify William Brown in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license 88690Check 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
- Performance Physical Therapy IncChelsea, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Brown among 7,100 physical therapist records in Massachusetts
William Brown 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 2025, is newer than 93% of them.
- NPI issued2025 · 93% of these records are older, 2% newer
- In a Medicare fileYes · 31% of these records are
- In the CMS Doctors and Clinicians fileYes · 33% of these records are
- Graduated2022 · median 2017 among the 2,371 with a school on file
- Record last updated2025 · 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).
23 physical therapist records list a practice address in Chelsea
They are 23 of the 998 NPPES records with a practice address in Chelsea, and 7,100 physical therapist records in Massachusetts.
All 7,100 in Massachusetts → Every provider in Chelsea → Physical Therapist nationwide →
The 8 physical therapist records with the nearest ZIP codes
- Flor Amaya LopezChelsea, MA 021501053931022
- Bayani Anastacio, P.T.Chelsea, MA 021501346491743
- Priya Farmah Sehli, DPTChelsea, MA 021501932556172
- Eric Goldberg, P.T.Chelsea, MA 021501720101017
- Anna Hnasko, P.T.Chelsea, MA 021501255563839
- Liisa Narhi, DPTChelsea, MA 021501154835361
- Robert Ratcliffe, PTChelsea, MA 021501760502918
- Brian Ritchie, PT, DPTChelsea, MA 021501750625307
Common questions
What is William Brown's NPI number?
William Brown's National Provider Identifier (NPI) is 1841177714, issued on Aug 20, 2025. An NPI identifies a provider in billing; it is not a license.
Where is William Brown located?
The NPPES record lists a practice address at 99 4TH St Ste 102, Chelsea, MA, 02150. Phone: (617) 889-2500. Providers update this record themselves, so call before visiting.
How can I verify William Brown's license?
NPPES lists Massachusetts license number 88690, as entered by the provider. 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.