MARK MEZAK
NPI 1861949711
Student in an Organized Health Care Education/Training Program in Berkeley, CA
About Mark Mezak NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARK MEZAK (NPI 1861949711) is an individual student in an organized health care education/training program in Berkeley, California and active in the NPI registry since September 2016. 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)
Mark Mezak is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Mark Mezak reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Richmond, CA 94801
- Reassigned Medicare billing, California enrollment
- 20,078 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.
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.
BERKELEY, CA 94705
BERKELEY, CA 94705
BERKELEY, CA 94705
BERKELEY, CA 94705
BERKELEY, CA 94705
BERKELEY, CA 94705
BERKELEY, CA 94705
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 Mark Mezak's NPI number?
The NPI number for Mark Mezak is 1861949711. It was assigned to this individual provider in the NPPES registry on September 8, 2016.
Where is Mark Mezak located?
Mark Mezak practices at 2712 Telegraph Ave, Berkeley, CA 94705. The listed phone number is (510) 548-8283.
What is Mark Mezak's specialty?
The primary specialty registered for this NPI is Student in an Organized Health Care Education/Training Program with taxonomy code 390200000X.
Is Mark Mezak enrolled in Medicare?
Yes. Mark Mezak is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Mark Mezak's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Mezak reassigns Medicare benefits to Permanente Medical Group Inc (Richmond, CA). 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 Mark Mezak'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 Mark Mezak was last updated on February 4, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.