DR. MARK VICTOR SAUER MD
NPI 1770644783
Obstetrics & Gynecology - Reproductive Endocrinology in New Brunswick, NJ
About Dr. Mark Victor Sauer Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARK VICTOR SAUER MD (NPI 1770644783) is an individual reproductive endocrinology provider in New Brunswick, New Jersey, licensed in New York (2001121) and active in the NPI registry since December 2006. He is enrolled in Medicare PECOS and maintains a secondary practice location in New York.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Mark Victor Sauer Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Mark Sauer reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New Brunswick, NJ 08901
- Reassigned Medicare billing, New Jersey enrollment
- 641 clinicians in this Medicare group
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 5,645 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 08901 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 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NEW BRUNSWICK, NJ 08901
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 Sauer's NPI number?
The NPI number for Mark Sauer is 1770644783. It was assigned to this individual provider in the NPPES registry on December 13, 2006.
Where is Mark Sauer located?
Mark Sauer practices at 125 Paterson St Ste 4200, New Brunswick, NJ 08901. The listed phone number is (732) 235-7628.
What is Mark Sauer's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Reproductive Endocrinology, with taxonomy code 207VE0102X.
Is Mark Sauer enrolled in Medicare?
Yes. Mark Sauer is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Mark Sauer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Sauer reassigns Medicare benefits to 2 organizations: Rutgers Health-Rwj Scleroderma Program (New Brunswick, NJ) and University Of California San Francisco (San Francisco, CA). 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 Mark Sauer'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 Sauer was last updated on March 17, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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. Mark Victor Sauer, MD · NPI 1770644783
Reproductive Endocrinology physician in New Brunswick, New Jersey. Individual provider, active in the CMS NPPES registry since December 13, 2006.
## Identity
- **NPI:** 1770644783 (Entity type: Individual)
- **Enumerated:** December 13, 2006
- **Primary specialty:** Obstetrics & Gynecology - Reproductive Endocrinology · taxonomy 207VE0102X
- **State license:** 2001121 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 125 PATERSON ST STE 4200, New Brunswick, NJ 08901-1962
- **Phone:** (732) 235-7628
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Rutgers Health-Rwj Scleroderma Program (NPI 1003988635, New Brunswick, NJ); University Of California San Francisco (NPI 1346329380, San Francisco, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** March 17, 2018
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Source: [NPI Profile](https://npiprofile.com/npi/1770644783) · Data from the CMS NPPES public registry.