WALDO A. ZAMOR MD
NPI 1669823019
Anesthesiology in Worcester, MA
About Waldo A. Zamor Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WALDO A. ZAMOR MD (NPI 1669823019) is an individual anesthesiology provider in Worcester, Massachusetts, licensed in Massachusetts (1022147) and active in the NPI registry since June 2016. He is enrolled in Medicare PECOS, is affiliated with Umass Memorial Medical Center/university Campus, and is a graduate of University Of Massachusetts Medical School (2016).
NPPES Registry Identity
Specialties & Licenses
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
Waldo A. Zamor Md 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 Waldo Zamor reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Worcester, MA 01655
- Reassigned Medicare billing, Massachusetts enrollment
- 2,902 clinicians in this Medicare group
Brockton, MA 02302
- Reassigned Medicare billing, Massachusetts enrollment
- 92 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.
Umass Memorial Medical Center/University Campus
Acute Care Hospitals · Worcester, MAOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WORCESTER, MA 01655
WORCESTER, MA 01655
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 Waldo Zamor's NPI number?
The NPI number for Waldo Zamor is 1669823019. It was assigned to this individual provider in the NPPES registry on June 28, 2016.
Where is Waldo Zamor located?
Waldo Zamor practices at 55 Lake Ave N, Worcester, MA 01655. The listed phone number is (508) 856-3271.
What is Waldo Zamor's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Waldo Zamor enrolled in Medicare?
Yes. Waldo Zamor 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 Waldo Zamor's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Waldo Zamor reassigns Medicare benefits to 2 organizations: Umass Memorial Medical Group Inc (Worcester, MA) and Matrix Anesthesia, PC (Brockton, 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 Waldo Zamor's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Waldo Zamor affiliated with any hospitals?
According to CMS data, Waldo Zamor is affiliated with Umass Memorial Medical Center/University Campus.
When was this NPI record last updated?
The NPPES record for Waldo Zamor was last updated on March 21, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# Waldo A. Zamor, MD · NPI 1669823019
Anesthesiology physician in Worcester, Massachusetts. Individual provider, active in the CMS NPPES registry since June 28, 2016.
## Identity
- **NPI:** 1669823019 (Entity type: Individual)
- **Enumerated:** June 28, 2016
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 1022147 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 55 LAKE AVE N, Worcester, MA 01655-0002
- **Phone:** (508) 856-3271
## 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): Umass Memorial Medical Group Inc (NPI 1760445373, Worcester, MA); Matrix Anesthesia, PC (NPI 1700028032, Brockton, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Massachusetts Medical School, class of 2016
## Record status
- **NPPES last updated:** March 21, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1669823019) · Data from the CMS NPPES public registry.