Carolyn Leach, M.D.
NPI 1679650261 · Cytopathology Physician · Colton, CA
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Carolyn Leach, M.D. is a Cytopathology Physician provider in Colton, CA (NPI 1679650261).
Provider details
- NPI number
- 1679650261
- Entity type
- Individual
- Primary specialty
- Cytopathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- G60429 (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
- 2006-11-01
- Last updated
- 2007-07-08
Frequently asked questions
- What is Carolyn Leach's NPI number?
- Carolyn Leach's National Provider Identifier (NPI) is 1679650261, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Carolyn Leach's specialty?
- Carolyn Leach is listed in the NPPES registry with a primary specialty of Cytopathology Physician (Allopathic & Osteopathic Physicians).
- Where is Carolyn Leach located?
- Carolyn Leach's practice location on file with NPPES is 400 N Pepper Ave, Colton, CA 92324-1801.
- What is Carolyn Leach's phone number?
- The practice phone number listed in the NPPES registry for Carolyn Leach is (909) 580-0010.
- Does Carolyn Leach accept Medicare?
- Carolyn Leach is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Carolyn Leach's NPI active?
- Yes — Carolyn Leach's NPI (1679650261) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.