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DR. JOHN FANKHAUSER M.D.
NPI 1942363882
Family Medicine in Ventura, CA

Active since December 19, 2006PECOS Enrolled
3291 LOMA VISTA RD, VENTURA, CA 93003(805) 652-6556 Get Directions Write a Review

NPPES record last updated: November 13, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. John Fankhauser M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. JOHN FANKHAUSER M.D. (NPI 1942363882) is an individual family medicine provider in Ventura, California, licensed in California (G74837) and active in the NPI registry since December 2006. He is enrolled in Medicare PECOS and maintains 4 additional practice locations.

NPPES Registry Identity

NPI1942363882
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameDR. JOHN FANKHAUSERCredential: M.D.
Location Address3291 LOMA VISTA RDVentura, CA 93003-3099
Mailing Address3291 Loma Vista RdVentura, CA 93003-3099 · (805) 652-6556
Phone(805) 652-6556
Sole ProprietorNo
Enumeration DateDecember 19, 2006
Last NPPES UpdateNovember 13, 2025
NPPES CertifiedNovember 13, 2025
✔ NPI 1942363882 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in CA · G74837
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
3291 LOMA VISTA RD, Ventura, CA 93003
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Secondary Practice Locations 4

Location 1125 W Thousand Oaks Blvd Ste 200Thousand Oaks, CA 91360-4459 · Phone (805) 418-9100
Location 21227 E Los Angeles AveSimi Valley, CA 93065-2871 · Phone (805) 582-4000
Location 32240 E Gonzales Rd Ste 110&120Oxnard, CA 93036-8210 · Phone (805) 981-5181
Location 4133 W Santa Clara StVentura, CA 93001-2543 · Phone (805) 641-5600

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. John Fankhauser M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show John Fankhauser reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

County Of Ventura
0.1 mi
Mental Health (Including Community Mental Health Center)
200 HILLMONT AVE
Ventura, CA 93003
  • Reassigned Medicare billing, California enrollment
  • 710 clinicians in this Medicare group
NPI 1205394525 (805) 652-6002

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 93003 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$95.28 typical visit price
range $62.32 – $185.36
Typical copayment $23.82 (range $15.58 – $46.34)
Most-billed visit code 99203
Established Patient
$108.74 typical visit price
range $20.68 – $151.85
Typical copayment $27.18 (range $5.17 – $37.96)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ANNA MIKHAILOVSKY M.D.
Family Medicine
3291 LOMA VISTA RD
VENTURA, CA 93003
Ventura County (805) 652-6228
DR. BRAD S ADLER M.D.
Pathology (Anatomic Pathology)
3291 LOMA VISTA RD
VENTURA, CA 93003
Ventura County (805) 652-6000
DR. RAMON GOMEZ M.D.
Family Medicine
3291 LOMA VISTA RD
VENTURA, CA 93003
Ventura County (805) 652-6556
FRANCES O'SULLIVAN
Psychiatry & Neurology (Psychiatry)
3291 LOMA VISTA RD
VENTURA, CA 93003
Ventura County (805) 652-6556
GEORGE K PAUL M.D.
Anesthesiology
3291 LOMA VISTA RD
VENTURA, CA 93003
Ventura County (805) 642-8565
DR. MARISA SPORTELLI M.D.
Family Medicine
3291 LOMA VISTA RD
VENTURA, CA 93003
Ventura County (805) 652-6556
DR. STEPHANUS R PHILIP MD
Hospitalist
3291 LOMA VISTA RD
VENTURA, CA 93003
Ventura County (805) 652-6075
MS. EUGENIA S H PANG OTRL
Occupational Therapist
3291 LOMA VISTA RD, VENTURA COUNTY MEDICAL CENTER
VENTURA, CA 93003
Ventura County (805) 648-9980

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is John Fankhauser's NPI number?

The NPI number for John Fankhauser is 1942363882. It was assigned to this individual provider in the NPPES registry on December 19, 2006.

Where is John Fankhauser located?

John Fankhauser practices at 3291 Loma Vista Rd, Ventura, CA 93003. The listed phone number is (805) 652-6556.

What is John Fankhauser's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is John Fankhauser enrolled in Medicare?

Yes. John Fankhauser is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for John Fankhauser's services?

According to the CMS Revalidation Reassignment List (October 2026 release), John Fankhauser reassigns Medicare benefits to County Of Ventura (Ventura, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for John Fankhauser's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for John Fankhauser was last updated on November 13, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.