DR. JOHN T LAROSSA M.D.
NPI 1346217155
Specialist in Newton, MA
About Dr. John T Larossa M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN T LAROSSA M.D. (NPI 1346217155) is an individual specialist in Newton, Massachusetts, licensed in Massachusetts (36773) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS, is affiliated with Newton-wellesley Hospital, and is a graduate of Tufts University School Of Medicine (1973).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 6
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. John T Larossa M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Areas of Expertise CMS Part B claims 4
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Newton-Wellesley Hospital
Acute Care Hospitals · Newton, MABrigham And Women's Hospital
Acute Care Hospitals · Boston, MAFaulkner Hospital-Brigham And Women's
Acute Care Hospitals · Boston, MAReferred Medical Equipment & Supplies CMS DME claims 3
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NEWTON, MA 02462
NEWTON LOWER FALLS, MA 02462
NEWTON, MA 02462
NEWTON, MA 02462
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is John Larossa's NPI number?
The NPI number for John Larossa is 1346217155. It was assigned to this individual provider in the NPPES registry on March 1, 2006.
Where is John Larossa located?
John Larossa practices at 2000 Washington St Suite 100, Newton, MA 02462. The listed phone number is (617) 244-1311.
What is John Larossa's specialty?
The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.
Is John Larossa enrolled in Medicare?
Yes. John Larossa is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
What insurance does John Larossa accept?
Health plans from Anthem Blue Cross and Blue Shield list John Larossa as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is John Larossa affiliated with any hospitals?
According to CMS data, John Larossa is affiliated with Newton-Wellesley Hospital, Brigham And Women's Hospital and Faulkner Hospital-Brigham And Women's.
When was this NPI record last updated?
The NPPES record for John Larossa was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 33 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. John T Larossa, M.D. · NPI 1346217155
Specialist provider in Newton, Massachusetts. Individual provider, active in the CMS NPPES registry since March 1, 2006.
## Identity
- **NPI:** 1346217155 (Entity type: Individual)
- **Enumerated:** March 1, 2006
- **Primary specialty:** Specialist · taxonomy 174400000X
- **State license:** 36773 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 2000 WASHINGTON ST, SUITE 100, Newton, MA 02462-1650
- **Phone:** (617) 244-1311 · **Fax:** (617) 244-2819
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Medical school:** Tufts University School Of Medicine, class of 1973
## Record status
- **NPPES last updated:** July 13, 2026
- **Other identifiers:** Medicaid 2051524 (MA); Other B33459 (MA); Other 60453 (MA); and 3 more
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Source: [NPI Profile](https://npiprofile.com/npi/1346217155) · Data from the CMS NPPES public registry.