Quick answers
- Which hospitals does James K. Ahern Jr. work at?
- Medicare's official clinician data lists James K. Ahern Jr. at 3 hospitals: Community Memorial Hospital - Ojai, Community Memorial Hospital - Ventura and Ronald Reagan UCLA Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does James K. Ahern Jr. see patients?
- Medicare's clinician data lists 3 practice locations, including Thousand Oaks, CA, Santa Monica, CA and Ventura, CA. Call before your visit to confirm the address.
- What is James K. Ahern Jr.'s specialty?
- Medicare lists Family Practice as the primary specialty.
- Does James K. Ahern Jr. accept Medicare assignment?
- Yes. Medicare's clinician data says James K. Ahern Jr. accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does James K. Ahern Jr. offer telehealth?
- Medicare's clinician data says James K. Ahern Jr. offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for James K. Ahern Jr.?
- (805) 418-3500, as listed in official Medicare / NPI Registry data.
- What is James K. Ahern Jr.'s NPI number?
- 1508359423. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where James K. Ahern Jr. works
Medicare's Facility Affiliation Data lists James K. Ahern Jr. at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Community Memorial Hospital - OjaiOjai, CA · Critical Access Hospital · CCN 051334
- Community Memorial Hospital - VenturaVentura, CA · Acute Care Hospital · CCN 050394
- Ronald Reagan UCLA Medical CenterLos Angeles, CA · Acute Care Hospital · CCN 050262
Practice locations
Addresses where James K. Ahern Jr. is enrolled with Medicare (CMS data updated 2026-10-02).
- 100 Moody Ct, Suite 200Thousand Oaks, CA 91360 (805) 418‑3500
- 2020 Santa Monica Blvd, Suite 210Santa Monica, CA 90404 (310) 458‑2381
- 6633 Telephone RdVentura, CA 93003
Group practices
Medicare enrollment lists James K. Ahern Jr. as a member of this group (CMS data updated 2026-10-02).
- The Regents of the University of California1,462 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Thousand Oaks
Clinicians with the same Medicare primary specialty in Thousand Oaks, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | F H Netter, M.d. School Of Med At Quinnipiac Univ |
| Graduation year | 2018 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1508359423 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians