Ariel Feifel, MD
NPI 1164126363 · Student in an Organized Health Care Education/Training Program · Modesto, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ariel Feifel, MD is a Student in an Organized Health Care Education/Training Program provider in Modesto, CA (NPI 1164126363).
Provider details
- NPI number
- 1164126363
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
3 yrs in NPPES registry
- Profile completeness38% of score
83% 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
- 2023-03-30
- Last updated
- 2023-03-30
- Certified
- 2023-03-27
Frequently asked questions
- What is Ariel Feifel's NPI number?
- Ariel Feifel's National Provider Identifier (NPI) is 1164126363, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ariel Feifel's specialty?
- Ariel Feifel is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is Ariel Feifel located?
- Ariel Feifel's practice location on file with NPPES is Kaiser Permanente Modesto Medical Center, Modesto, CA 95356.
- What is Ariel Feifel's phone number?
- The practice phone number listed in the NPPES registry for Ariel Feifel is (209) 735-6092.
- Does Ariel Feifel accept Medicare?
- Ariel Feifel is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ariel Feifel's NPI active?
- Yes — Ariel Feifel's NPI (1164126363) is active in the NPPES registry as of the last update on 2023-03-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.