Dr. James Ahern, MD
Family Medicine (Family Medicine Physician)
6633 Telephone Rd Ste 100
Ventura, CA 93003
Who else practices at this address →
Ventura County includes mental health (9% of residents) shortage areas. About shortage areas
- Medicare participating
At a glance
- Medical school
- F H Netter, M.d. School of Med at Quinnipiac Univ (2018)
- Years since graduation
- 8
- In the NPI registry since
- 2018
- Medicare patients seen, 2024
- 495
Licensed in California since 2019, according to the Medical Board of California. We show license dates only for the states that publish them in bulk; see which states do. For other states, check the state medical board.
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. What an NPI is
Education and training
- 2018Medical school: F H Netter, M.d. School of Med at Quinnipiac Univ
- 2018Registered with an NPI (national billing number; not a license date)
Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Family Medicine Physician primary
CA license A164158 (first issued 2019; current) - Student in an Organized Health Care Education/Training Program
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Ronald Reagan UCLA Medical Center Los Angeles, CA
- Community Memorial Hospital - Ventura Ventura, CA
- Community Memorial Hospital - Ojai Ojai, CA
Medical groups
- The Regents of the University of California (1,462 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare patients and services
- Medicare patients, 2024
- 495
- Services billed
- 2,866
- Patients’ average age
- 73
| Service | Times | Patients |
|---|---|---|
| Established patient office or other outpatient visit, 30-39 minutes | 630 | 279 |
| Established patient office or other outpatient visit, 20-29 minutes | 211 | 173 |
| Insertion of needle into vein for collection of blood sample | 135 | 108 |
| New patient office or other outpatient visit, 60-74 minutes | 115 | 115 |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 97 | 97 |
| Established patient office or other outpatient visit, 40-54 minutes | 66 | 57 |
| Administration of influenza virus vaccine | 63 | 63 |
| Influenza vaccine split virus, preservative free | 57 | 57 |
| Transitional care management services for problem of high complexity | 57 | 48 |
| Telephone medical discussion with physician, 21-30 minutes | 56 | 45 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Medicare prescriptions
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.
Payments from drug and device companies
In 2025, 2 companies reported 3 payments worth $60.45 in total to this clinician.
| Eisai Inc. | $30.61 |
|---|---|
| AstraZeneca Pharmaceuticals LP | $29.84 |
| Food and Beverage | $60.45 |
|---|
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.