MAINEHEALTH
NPI 1629761978
Family Medicine in Portland, ME
About Mainehealth NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MAINEHEALTH (NPI 1629761978), doing business as Mainehealth Medical Group-specialty Care, is a healthcare organization registered as a family medicine in Portland, Maine and active in the NPI registry since June 2023. The organization lists Robert Hunter, Senior Vice President - Finance, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 15
Other Names 1
Group Practice 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Mainehealth is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
3,133Medicare enrollment records show 3,133 clinicians reassign Medicare billing to Mainehealth, which bills Medicare for the services they deliver. Of these, 1,566 practice within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 72
Nearest to this location (20)
See all 3,133Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 Mainehealth's NPI number?
The NPI number for Mainehealth is 1629761978. It was assigned to this organization in the NPPES registry on June 1, 2023. The provider is doing business as MaineHealth Medical Group-Specialty Care.
Where is Mainehealth located?
Mainehealth is located at 110 Free St, Portland, ME 04101. The listed phone number is (207) 661-7001.
What is Mainehealth's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Mainehealth enrolled in Medicare?
Yes. Mainehealth is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Mainehealth?
According to the CMS Revalidation Reassignment List (October 2026 release), 3,133 clinicians in 72 Medicare specialties reassign their Medicare billing to Mainehealth. A 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 the clinician's services. The largest specialties are Nurse Practitioner (617), Certified Registered Nurse Anesthetist (CRNA) (251) and Internal Medicine (247). Of these, 1,566 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does Mainehealth accept?
Health plans from Anthem Blue Cross and Blue Shield, Harvard Pilgrim Health Care and WellSense Health Plan list Mainehealth 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.
When was this NPI record last updated?
The NPPES record for Mainehealth was last updated on August 3, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Mainehealth · NPI 1629761978
Family Medicine organization in Portland, Maine. Organization record, active in the CMS NPPES registry since June 1, 2023.
## Identity
- **NPI:** 1629761978 (Entity type: Organization)
- **Enumerated:** June 1, 2023
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **Also known as:** MaineHealth Medical Group-Specialty Care (Doing Business As)
- **Organization subpart:** Yes (part of Mainehealth)
- **Authorized official:** Robert Hunter, SENIOR VICE PRESIDENT - FINANCE
## Practice location
- **Address:** 110 FREE ST, Portland, ME 04101-3908
- **Phone:** (207) 661-7001
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 3,133 clinicians in 72 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Nurse Practitioner (617), Certified Registered Nurse Anesthetist (CRNA) (251), Internal Medicine (247); 1,566 practice within 10 miles; [full list](https://npiprofile.com/npi/1629761978/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 3, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1629761978) · Data from the CMS NPPES public registry.