Clarence Sinkhorn, MD
NPI 1972676195 · Obstetrics & Gynecology Physician · Colton, CA
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Clarence Sinkhorn, MD is a Obstetrics & Gynecology Physician provider in Colton, CA (NPI 1972676195).
Provider details
- NPI number
- 1972676195
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G60133 (CA)
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
- 2006-11-16
- Last updated
- 2016-11-18
Frequently asked questions
- What is Clarence Sinkhorn's NPI number?
- Clarence Sinkhorn's National Provider Identifier (NPI) is 1972676195, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Clarence Sinkhorn's specialty?
- Clarence Sinkhorn is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Clarence Sinkhorn located?
- Clarence Sinkhorn's practice location on file with NPPES is 400 N Pepper Ave, Colton, CA 92324-1801.
- What is Clarence Sinkhorn's phone number?
- The practice phone number listed in the NPPES registry for Clarence Sinkhorn is (909) 580-6320.
- Does Clarence Sinkhorn accept Medicare?
- Clarence Sinkhorn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Clarence Sinkhorn's NPI active?
- Yes — Clarence Sinkhorn's NPI (1972676195) is active in the NPPES registry as of the last update on 2016-11-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.