Dr. Christopher Aou, DO
Family Medicine (Family Medicine Physician)
- Medicare participating
At a glance
- Medical school
- College of Osteo Med of the Pacific at Pomona (1997)
- Years since graduation
- 29
- In the NPI registry since
- 2005
- Medicare patients seen, 2024
- 204
Licensed in California since 1998, according to the Osteopathic 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. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is
Education and training
- 1997Medical school: College of Osteo Med of the Pacific at Pomona
- 2005Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
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 20A7260 (first issued 1998; current)
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Providence St. Jude Medical Center Fullerton, CA
Medical groups
- Providence Medical Foundation (1,466 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
- 204
- Services billed
- 669
- Patients’ average age
- 75
| Service | Times | Patients |
|---|---|---|
| Established patient office or other outpatient visit, 30-39 minutes | 167 | 110 |
| Established patient office or other outpatient visit, 40-54 minutes | 70 | 62 |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 32 | 32 |
| Administration of pneumococcal vaccine | 18 | 17 |
| Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use | 18 | 17 |
| Telephone medical discussion with physician, 21-30 minutes | 16 | 16 |
| Insertion of needle into vein for collection of blood sample | 16 | 13 |
| Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit | 14 | 14 |
| Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage | 12 | 11 |
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 2 payments worth $218 in total to this clinician.
| Mayne Pharma Commercial LLC | $121 |
|---|---|
| Dexcom, Inc. | $96.25 |
| Food and Beverage | $218 |
|---|
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.