John Fankhauser, M.D.
NPI 1942363882 · Family Medicine Physician · Ventura, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Fankhauser, M.D. is a Family Medicine Physician provider in Ventura, CA (NPI 1942363882).
Provider details
- NPI number
- 1942363882
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G74837 (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
5 documented practice locations
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
Additional practice locations (4)
- 2240 E Gonzales Rd Ste 110&120Oxnard, CA 93036-8210Phone: (805) 981-5181
- 1227 E Los Angeles AveSimi Valley, CA 93065-2871Phone: (805) 582-4000
- 125 W Thousand Oaks Blvd Ste 200Thousand Oaks, CA 91360-4459Phone: (805) 418-9100
- 133 W Santa Clara StVentura, CA 93001-2543Phone: (805) 641-5600
Registry dates
- Enumerated
- 2006-12-19
- Last updated
- 2025-11-13
- Certified
- 2025-11-13
Frequently asked questions
- What is John Fankhauser's NPI number?
- John Fankhauser's National Provider Identifier (NPI) is 1942363882, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Fankhauser's specialty?
- John Fankhauser is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Fankhauser located?
- John Fankhauser's practice location on file with NPPES is 3291 Loma Vista Rd, Ventura, CA 93003-3099.
- What is John Fankhauser's phone number?
- The practice phone number listed in the NPPES registry for John Fankhauser is (805) 652-6556.
- Does John Fankhauser accept Medicare?
- John Fankhauser is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Fankhauser's NPI active?
- Yes — John Fankhauser's NPI (1942363882) is active in the NPPES registry as of the last update on 2025-11-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.