Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mr. John J O'Sullivan, P.T.
Physical Therapist in Florence, MA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1346204468
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Registry record
Entity type Individual (Type 1)
Name Mr. John J O'Sullivan
Credential P.T.
Sex Male
Practice address 70 Main St, Florence, MA, 01062
Phone (413) 586-8400
Fax (866) 644-0872
Enumeration date Apr 14, 2006
Last updated in NPPES Apr 17, 2024
Taxonomy & licenses
225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 8731 (MA) Primary
PT · Physical Therapist: A licensed movement specialist treating injury and disability through exercise and rehabilitation.
About the PT credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 2329164 | Other | MA | AETNA/US HEALTHCARE |
| 0332071 | Medicaid | MA | - |
| 63862 | Other | MA | FALLON COMMUNITY HEALTH PLAN |
| 712451 | Other | MA | CONNECTICARE |
| Y67777 | Other | MA | BLUE CROSS BLUE SHIELD |
| 470226 | Other | MA | TUFTS HEALTH PLAN |
| 650020139 | Other | MA | RAILROAD MEDICARE |
| 626166 | Other | MA | HARVARD PILGRIM HEALTH CA |
| 24189 | Other | MA | HEALTH NEW ENGLAND |
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
What is the NPI number for John O'Sullivan?
The National Provider Identifier (NPI) for John O'Sullivan is 1346204468, a Type 1 (individual) record in the CMS NPPES registry.
Where does John O'Sullivan practice?
The practice location on file with NPPES is in Florence, MA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Steven Esrick Family Medicine Physician · Florence, MA NPI 1154321875 David Kaufman Family Medicine Physician · Florence, MA NPI 1083614325 George Kriebel Psychiatry Physician · Florence, MA NPI 1710987177 Henry Simkin Family Medicine Physician · Florence, MA NPI 1336149384 Paul Thaler Family Medicine Physician · Florence, MA NPI 1538169594 Julie Waight Family Nurse Practitioner · Florence, MA NPI 1871594788 Linda Preston Family Medicine Physician · Florence, MA NPI 1487636411 Bruce Finke Geriatric Medicine (Family Medicine) Physician · Florence, MA NPI 1669446597
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-04-17.