Mark Sauer, MD
NPI 1770644783 · Reproductive Endocrinology Physician · New Brunswick, NJ
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Sauer, MD is a Reproductive Endocrinology Physician provider in New Brunswick, NJ (NPI 1770644783).
Provider details
- NPI number
- 1770644783
- Entity type
- Individual
- Primary specialty
- Reproductive Endocrinology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 2001121 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (1)
- 1790 Broadway4th FloorNew York, NY 10019-1412Phone: (646) 756-8282Fax: (646) 756-8280
Registry dates
- Enumerated
- 2006-12-13
- Last updated
- 2018-03-17
Frequently asked questions
- What is Mark Sauer's NPI number?
- Mark Sauer's National Provider Identifier (NPI) is 1770644783, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Sauer's specialty?
- Mark Sauer is listed in the NPPES registry with a primary specialty of Reproductive Endocrinology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Sauer located?
- Mark Sauer's practice location on file with NPPES is 125 Paterson St Ste 4200, New Brunswick, NJ 08901-1962.
- What is Mark Sauer's phone number?
- The practice phone number listed in the NPPES registry for Mark Sauer is (732) 235-7628.
- Does Mark Sauer accept Medicare?
- Mark Sauer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Sauer's NPI active?
- Yes — Mark Sauer's NPI (1770644783) is active in the NPPES registry as of the last update on 2018-03-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.