JAY MAINTHIA
NPI 1306420781
Family Medicine in Roslindale, MA
About Jay Mainthia NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JAY MAINTHIA (NPI 1306420781) is an individual family medicine provider in Roslindale, Massachusetts, licensed in Massachusetts (1015761) and active in the NPI registry since May 2021. He is enrolled in Medicare PECOS, is affiliated with Boston Medical Center, and maintains a secondary practice location in Boston.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Jay Mainthia 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.
Medicare Billing Reassignments
2Medicare enrollment records show Jay Mainthia reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Roslindale, MA 02131
- Reassigned Medicare billing, Massachusetts enrollment
- 41 clinicians in this Medicare group
Boston, MA 02118
- Reassigned Medicare billing, Massachusetts enrollment
- 113 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Boston Medical Center
Acute Care Hospitals · Boston, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02131 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 3
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Jay Mainthia's NPI number?
The NPI number for Jay Mainthia is 1306420781. It was assigned to this individual provider in the NPPES registry on May 11, 2021.
Where is Jay Mainthia located?
Jay Mainthia practices at 4199 Washington Street Suite 1, Roslindale, MA 02131. The listed phone number is (617) 323-4440.
What is Jay Mainthia's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Jay Mainthia enrolled in Medicare?
Yes. Jay Mainthia 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.
Which organizations bill Medicare for Jay Mainthia's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Jay Mainthia reassigns Medicare benefits to 2 organizations: Boston Medical Center Corporation (Roslindale, MA) and Boston University Family Medicine, Inc. (Boston, MA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Jay Mainthia's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Jay Mainthia accept?
Health plans from Anthem Blue Cross and Blue Shield and WellSense Health Plan list Jay Mainthia 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 Jay Mainthia affiliated with any hospitals?
According to CMS data, Jay Mainthia is affiliated with Boston Medical Center.
When was this NPI record last updated?
The NPPES record for Jay Mainthia was last updated on May 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months 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.
# Jay Mainthia · NPI 1306420781
Family Medicine physician in Roslindale, Massachusetts. Individual provider, active in the CMS NPPES registry since May 11, 2021.
## Identity
- **NPI:** 1306420781 (Entity type: Individual)
- **Enumerated:** May 11, 2021
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 1015761 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 4199 WASHINGTON STREET, SUITE 1, Roslindale, MA 02131
- **Phone:** (617) 323-4440
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Boston Medical Center Corporation (NPI 1386718823, Roslindale, MA); Boston University Family Medicine, Inc. (NPI 1134166390, Boston, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Morehouse School Of Medicine, class of 2023
## Record status
- **NPPES last updated:** May 11, 2026
- **Other identifiers:** Medicaid 110201935A (MA)
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Source: [NPI Profile](https://npiprofile.com/npi/1306420781) · Data from the CMS NPPES public registry.