Christopher Aou, DO
Family Medicine Physician · Fullerton, CA
Christopher Aou, DO is a family medicine physician with a practice address in Fullerton, California, and NPI 1164422671, issued on Jul 26, 2005. Check the license (California 20A7260, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Christopher Aou
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 20A7260 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1835 Sunny Crest Dr, Fullerton, CA 92835
- Phone
- (714) 446-5101
- Enumerated
- Jul 26, 2005
- Record last updated
- Oct 14, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20100527000161); accepts Medicare assignment
- Medical or professional school
- College Of Osteo Med Of The Pacific At Pomona, 1997
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 1835 Sunny Crest Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Mark Davenport, M.D.Family Medicine Physician1679569636
- Julie Fortune, M.S.Marriage & Family Therapist1376685974
- Jennifer Fuentes, N.P.Family Nurse Practitioner1992906465
Verify Christopher Aou in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A7260Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
36% more Medicare Part D claims than the average family medicine physician in 2024
4,834 Medicare Part D claims for 583 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 13 claims were for opioids.
Most prescribed
- Atorvastatin Calcium597 claims
- Amlodipine Besylate382 claims
- Losartan Potassium372 claims
- Lisinopril238 claims
- Metformin Hcl184 claims
- Hydrochlorothiazide149 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $240.11
2 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Providence Medical FoundationFullerton, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Christopher Aou among 17,133 family medicine physician records in California
Christopher Aou, DO is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 94% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1997 · median 2005 among the 10,652 with a school on file
- Record last updated2021 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
35 family medicine physician records list a practice address in Fullerton
They are 35 of the 5,437 NPPES records with a practice address in Fullerton, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Fullerton → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Anne Amer, D.O.Fullerton, CA 928351194979377
- Jonathan Anderson, MDFullerton, CA 928351588664916
- James Benoit, M.D.Fullerton, CA 928351407843949
- Bing-Lo Chang, M.D.Fullerton, CA 928351295721900
- Mark Davenport, M.D.Fullerton, CA 928351679569636
- Michael Green, D.O.Fullerton, CA 928351902944788
- Daniel Kim, M.D.Fullerton, CA 928351457347411
- Cynthia Mejia, P.A.-CFullerton, CA 928351871602839
Common questions
What is Christopher Aou, DO's NPI number?
Christopher Aou, DO's National Provider Identifier (NPI) is 1164422671, issued on Jul 26, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Christopher Aou, DO located?
The NPPES record lists a practice address at 1835 Sunny Crest Dr, Fullerton, CA, 92835. Phone: (714) 446-5101. Providers update this record themselves, so call before visiting.
How can I verify Christopher Aou, DO's license?
NPPES lists California license number 20A7260, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Christopher Aou, DO prescribe under Medicare Part D?
In 2024, Christopher Aou, DO had 4,834 Medicare Part D claims for 583 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.