DR. WILLIAM GRIEVER M.D.
NPI 1316013006
Family Medicine in Halifax, MA
About Dr. William Griever M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. WILLIAM GRIEVER M.D. (NPI 1316013006) is an individual family medicine provider in Halifax, Massachusetts, licensed in Massachusetts (157180) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS, is affiliated with Beth Israel Deaconess Hospital Plymouth, and is a graduate of Boston University School Of Medicine (1988).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Accepted Insurance
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
Dr. William Griever M.d. 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 Reassignment
Medicare enrollment records show William Griever reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Plymouth, MA 02360
- Reassigned Medicare billing, Massachusetts enrollment
- 1,317 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.
Areas of Expertise CMS Part B claims 57
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Beth Israel Deaconess Hospital Plymouth
Acute Care Hospitals · Plymouth, MASouthcoast Hospitals Group
Acute Care Hospitals · Fall River, MABeth Israel Deaconess Medical Center
Acute Care Hospitals · Boston, MASouth Shore Hospital
Acute Care Hospitals · South Weymouth, MABrigham And Women's Hospital
Acute Care Hospitals · Boston, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02338 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 23
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 3
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 William Griever's NPI number?
The NPI number for William Griever is 1316013006. It was assigned to this individual provider in the NPPES registry on November 27, 2006.
Where is William Griever located?
William Griever practices at 430 Plymouth St, Halifax, MA 02338. The listed phone number is (781) 293-7210.
What is William Griever's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is William Griever enrolled in Medicare?
Yes. William Griever 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 organization bills Medicare for William Griever's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Griever reassigns Medicare benefits to Atrius Health, Inc. (Plymouth, MA). The 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 William Griever's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does William Griever accept?
Health plans from Anthem Blue Cross and Blue Shield list William Griever 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.
Is William Griever affiliated with any hospitals?
According to CMS data, William Griever is affiliated with Beth Israel Deaconess Hospital Plymouth, Southcoast Hospitals Group, Beth Israel Deaconess Medical Center, South Shore Hospital and Brigham And Women's Hospital.
When was this NPI record last updated?
The NPPES record for William Griever was last updated on March 11, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.