DR. MICHAEL PETER ZACKS MD
NPI 1043289622
Internal Medicine in Newton, MA
About Dr. Michael Peter Zacks Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MICHAEL PETER ZACKS MD (NPI 1043289622) is an individual internal medicine provider in Newton, Massachusetts, licensed in Massachusetts (216739) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS.
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 (PECOS)
Dr. Michael Peter Zacks Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Michael Zacks reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Newton, MA 02462
- Reassigned Medicare billing, Massachusetts enrollment
- 992 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02462 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NEWTON, MA 02462
NEWTON, MA 02462
NEWTON, MA 02462
NEWTON, MA 02462
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 Michael Zacks's NPI number?
The NPI number for Michael Zacks is 1043289622. It was assigned to this individual provider in the NPPES registry on March 16, 2006.
Where is Michael Zacks located?
Michael Zacks practices at 2014 Washington Street Newton Wellesley Hospital, Newton, MA 02462. The listed phone number is (617) 243-6896.
What is Michael Zacks's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Michael Zacks enrolled in Medicare?
Yes. Michael Zacks is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Michael Zacks's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Zacks reassigns Medicare benefits to Mass General Brigham Medical Group Suburban Massachusetts Inc (Newton, 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 Michael Zacks's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Michael Zacks was last updated on October 16, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.
# Dr. Michael Peter Zacks, MD · NPI 1043289622
Internal Medicine physician in Newton, Massachusetts. Individual provider, active in the CMS NPPES registry since March 16, 2006.
## Identity
- **NPI:** 1043289622 (Entity type: Individual)
- **Enumerated:** March 16, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 216739 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 2014 WASHINGTON STREET, NEWTON WELLESLEY HOSPITAL, Newton, MA 02462
- **Phone:** (617) 243-6896 · **Fax:** (617) 243-5148
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Mass General Brigham Medical Group Suburban Massachusetts Inc (NPI 1538191218, Newton, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 16, 2009
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Source: [NPI Profile](https://npiprofile.com/npi/1043289622) · Data from the CMS NPPES public registry.