Gregory Serfer, D.O.
NPI 1518003433 · Internal Medicine Physician · Auburn, NY
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Serfer, D.O. is a Internal Medicine Physician provider in Auburn, NY (NPI 1518003433).
Provider details
- NPI number
- 1518003433
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 246789 (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
1 documented practice location
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
Registry dates
- Enumerated
- 2007-01-29
- Last updated
- 2014-02-07
Frequently asked questions
- What is Gregory Serfer's NPI number?
- Gregory Serfer's National Provider Identifier (NPI) is 1518003433, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Serfer's specialty?
- Gregory Serfer is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Serfer located?
- Gregory Serfer's practice location on file with NPPES is 17 Lansing St, Auburn, NY 13021-1983.
- What is Gregory Serfer's phone number?
- The practice phone number listed in the NPPES registry for Gregory Serfer is (315) 255-7438.
- Does Gregory Serfer accept Medicare?
- Gregory Serfer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Serfer's NPI active?
- Yes — Gregory Serfer's NPI (1518003433) is active in the NPPES registry as of the last update on 2014-02-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.