WESTERN MASS PHYSICIAN ASSOCIATES INC
NPI 1922009547
Emergency Medicine - Emergency Medical Services in Chicopee, MA
About Western Mass Physician Associates Inc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WESTERN MASS PHYSICIAN ASSOCIATES INC (NPI 1922009547), doing business as Holyoke Medical Group, is a healthcare organization registered as an emergency medical services in Chicopee, Massachusetts and active in the NPI registry since August 2005. The organization lists Dean Vitarisi, Senior Vp, Cfo, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 15
Other Names 2
Other Identifiers 6
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)
Western Mass Physician Associates Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
241Medicare enrollment records show 241 clinicians reassign Medicare billing to Western Mass Physician Associates Inc, which bills Medicare for the services they deliver. Of these, 4 practice at this address and 119 within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 35
Nearest to this location (20)
See all 241Chicopee, MA 01020
Chicopee, MA 01020
Source: 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 Western Mass Physician Associates Inc's NPI number?
The NPI number for Western Mass Physician Associates Inc is 1922009547. It was assigned to this organization in the NPPES registry on August 4, 2005. The provider is doing business as Holyoke Medical Group and Various Practice Sites in Western Mass.
Where is Western Mass Physician Associates Inc located?
Western Mass Physician Associates Inc is located at 262 New Ludlow Rd, Chicopee, MA 01020. The listed phone number is (413) 534-2622.
What is Western Mass Physician Associates Inc's specialty?
The primary specialty registered for this NPI is Emergency Medicine, specializing in Emergency Medical Services, with taxonomy code 207PE0004X.
Is Western Mass Physician Associates Inc enrolled in Medicare?
Yes. Western Mass Physician Associates Inc is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Western Mass Physician Associates Inc?
According to the CMS Revalidation Reassignment List (October 2026 release), 241 clinicians in 35 Medicare specialties reassign their Medicare billing to Western Mass Physician Associates 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 Diagnostic Radiology (64), Nurse Practitioner (50) and Internal Medicine (23). Of these, 4 practice at this address and 119 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does Western Mass Physician Associates Inc accept?
Health plans from Anthem Blue Cross and Blue Shield and WellSense Health Plan list Western Mass Physician Associates 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 Western Mass Physician Associates Inc was last updated on September 22, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 30 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.
# Western Mass Physician Associates Inc · NPI 1922009547
Emergency Medical Services organization in Chicopee, Massachusetts. Organization record, active in the CMS NPPES registry since August 4, 2005.
## Identity
- **NPI:** 1922009547 (Entity type: Organization)
- **Enumerated:** August 4, 2005
- **Primary specialty:** Emergency Medicine - Emergency Medical Services · taxonomy 207PE0004X
- **Also known as:** Holyoke Medical Group (Doing Business As); Various Practice Sites in Western Mass (Doing Business As)
- **Organization subpart:** Yes (part of Valley Health Systems, Inc.)
- **Authorized official:** Dean Vitarisi, SENIOR VP, CFO
## Practice location
- **Address:** 262 NEW LUDLOW RD, Chicopee, MA 01020-4324
- **Phone:** (413) 534-2622 · **Fax:** (413) 534-2661
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 241 clinicians in 35 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Diagnostic Radiology (64), Nurse Practitioner (50), Internal Medicine (23); 4 practice at this address and 119 within 10 miles; [full list](https://npiprofile.com/npi/1922009547/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** September 22, 2026
- **Other identifiers:** Other T203; Medicaid 004245983 (CT); Medicaid 9770771 (MA); and 3 more
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Source: [NPI Profile](https://npiprofile.com/npi/1922009547) · Data from the CMS NPPES public registry.