STEWARD PHYSICIAN NETWORK, INC
NPI 1629398219
Specialist in Watertown, MA
About Steward Physician Network, Inc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
STEWARD PHYSICIAN NETWORK, INC (NPI 1629398219) is a healthcare organization registered as a specialist in Watertown, Massachusetts and active in the NPI registry since June 2010. The organization lists Amy Marie Guay, President Of Steward Medical Group, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Group Practice 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, revalidation and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Steward Physician Network, Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Revalidation Due Date
Revalidation due by October 31, 2026
Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.
Clinicians Billing Medicare Through This Organization
1,503Medicare enrollment records show 1,503 clinicians reassign Medicare billing to Steward Physician Network, Inc, which bills Medicare for the services they deliver. Of these, 499 practice within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 59
Nearest to this location (20)
See all 1,503Source: 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 Steward Medical Group, Inc's NPI number?
The NPI number for Steward Medical Group, Inc is 1629398219. It was assigned to this organization in the NPPES registry on June 4, 2010. The provider is also known as Steward Physician Network, Inc.
Where is Steward Medical Group, Inc located?
Steward Medical Group, Inc is located at 9 Galen St, Watertown, MA 02472. The listed phone number is (615) 467-4474.
What is Steward Medical Group, Inc's specialty?
The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.
Is Steward Medical Group, Inc enrolled in Medicare?
Yes. Steward Medical Group, Inc is registered in the Medicare PECOS enrollment system.
When is Steward Medical Group, Inc's Medicare revalidation due?
According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (New Hampshire, Clinic/Group Practice) is due for revalidation by October 31, 2026. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.
How many clinicians bill Medicare through Steward Medical Group, Inc?
According to the CMS Revalidation Reassignment List (October 2026 release), 1,503 clinicians in 59 Medicare specialties reassign their Medicare billing to Steward Medical Group, Inc. 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 Internal Medicine (313), Nurse Practitioner (308) and Psychiatry (103). Of these, 499 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does Steward Medical Group, Inc accept?
Health plans from Anthem Blue Cross and Blue Shield and CareSource list Steward Medical Group, Inc 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 Steward Medical Group, Inc was last updated on February 16, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years 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.
# Steward Physician Network, Inc · NPI 1629398219
Specialist organization in Watertown, Massachusetts. Organization record, active in the CMS NPPES registry since June 4, 2010.
## Identity
- **NPI:** 1629398219 (Entity type: Organization)
- **Enumerated:** June 4, 2010
- **Primary specialty:** Specialist · taxonomy 174400000X
- **Legal business name:** Steward Medical Group, Inc
- **Organization subpart:** Yes (part of Steward Health Care System Llc)
- **Authorized official:** Amy Guay, PRESIDENT OF STEWARD MEDICAL GROUP
## Practice location
- **Address:** 9 GALEN ST, Watertown, MA 02472-4515
- **Phone:** (615) 467-4474 · **Fax:** (615) 467-1267
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Medicare revalidation due:** October 31, 2026 (Non-DME Part B, New Hampshire, Clinic/Group Practice) · CMS Revalidation Due Date List, October 2026 release
- **Clinicians billing through this organization:** 1,503 clinicians in 59 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Internal Medicine (313), Nurse Practitioner (308), Psychiatry (103); 499 practice within 10 miles; [full list](https://npiprofile.com/npi/1629398219/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** February 16, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1629398219) · Data from the CMS NPPES public registry.