Zar Kotlarsic, DO
NPI 1285373043 · Internal Medicine Physician · Pasadena, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Zar Kotlarsic, DO is a Internal Medicine Physician provider in Pasadena, CA (NPI 1285373043).
Provider details
- NPI number
- 1285373043
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- 20A23810 (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
4 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
- 2022-05-31
- Last updated
- 2025-09-28
- Certified
- 2025-09-28
Frequently asked questions
- What is Zar Kotlarsic's NPI number?
- Zar Kotlarsic's National Provider Identifier (NPI) is 1285373043, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Zar Kotlarsic's specialty?
- Zar Kotlarsic is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Zar Kotlarsic located?
- Zar Kotlarsic's practice location on file with NPPES is 625 S Fair Oaks Ave Ste 235, Pasadena, CA 91105-2664.
- What is Zar Kotlarsic's phone number?
- The practice phone number listed in the NPPES registry for Zar Kotlarsic is (800) 233-2771.
- Does Zar Kotlarsic accept Medicare?
- Zar Kotlarsic is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Zar Kotlarsic's NPI active?
- Yes — Zar Kotlarsic's NPI (1285373043) is active in the NPPES registry as of the last update on 2025-09-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.