Ronald Koretz, MD
NPI 1265465579 · Gastroenterology Physician · Sylmar, CA
Enrolled with Medicare as Order and Referring Only - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ronald Koretz, MD is a Gastroenterology Physician provider in Sylmar, CA (NPI 1265465579).
Provider details
- NPI number
- 1265465579
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A023109 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
- 2006-07-09
- Last updated
- 2010-03-23
Frequently asked questions
- What is Ronald Koretz's NPI number?
- Ronald Koretz's National Provider Identifier (NPI) is 1265465579, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ronald Koretz's specialty?
- Ronald Koretz is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Ronald Koretz located?
- Ronald Koretz's practice location on file with NPPES is 14445 Olive View Dr, Sylmar, CA 91342.
- What is Ronald Koretz's phone number?
- The practice phone number listed in the NPPES registry for Ronald Koretz is (818) 364-3205.
- Does Ronald Koretz accept Medicare?
- Ronald Koretz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ronald Koretz's NPI active?
- Yes — Ronald Koretz's NPI (1265465579) is active in the NPPES registry as of the last update on 2010-03-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.