TERESA MASTROIANNI FNP
NPI 1295533537
Nurse Practitioner - Family in Natick, MA
About Teresa Mastroianni Fnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
TERESA MASTROIANNI FNP (NPI 1295533537) is an individual family provider in Natick, Massachusetts, licensed in Massachusetts (RN2333998) and active in the NPI registry since March 2025. She has opted out of Medicare through March 28, 2027 and remains eligible to order and refer.
NPPES Registry Identity
Specialties & Licenses 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Opted out of Medicare
Teresa Mastroianni Fnp has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from March 28, 2025 through March 28, 2027.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 01760 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 7
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 Teresa Mastroianni's NPI number?
The NPI number for Teresa Mastroianni is 1295533537. It was assigned to this individual provider in the NPPES registry on March 4, 2025.
Where is Teresa Mastroianni located?
Teresa Mastroianni practices at 117 W Central St, Natick, MA 01760. The listed phone number is (508) 566-5943.
What is Teresa Mastroianni's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Teresa Mastroianni enrolled in Medicare?
No. Teresa Mastroianni has opted out of Medicare through March 28, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.
When was this NPI record last updated?
The NPPES record for Teresa Mastroianni was last updated on April 1, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.
# Teresa Mastroianni, FNP · NPI 1295533537
Family physician in Natick, Massachusetts. Individual provider, active in the CMS NPPES registry since March 4, 2025.
## Identity
- **NPI:** 1295533537 (Entity type: Individual)
- **Enumerated:** March 4, 2025
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** RN2333998 (Massachusetts)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 117 W CENTRAL ST, Natick, MA 01760-4381
- **Phone:** (508) 566-5943
## Medicare
- **Medicare:** Opted out of Medicare (opt-out affidavit on file, in effect through March 28, 2027); services are provided under private contract
## Record status
- **NPPES last updated:** April 1, 2025
---
Source: [NPI Profile](https://npiprofile.com/npi/1295533537) · Data from the CMS NPPES public registry.