CHRISTOPHER AOU DO
NPI 1164422671
Family Medicine in Fullerton, CA

Q: What is Christopher Aou's NPI number?

The NPI number for Christopher Aou is 1164422671. It was assigned to this individual provider in the NPPES registry on July 26, 2005.

Q: What is Christopher Aou's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Christopher Aou was last updated on October 14, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years 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.

Active since July 26, 2005PECOS EnrolledAccepts Medicare Assignment

1835 SUNNY CREST DR, FULLERTON, CA 92835(714) 446-5101 Get Directions Write a Review

NPPES record last updated: October 14, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Oct 14, 2021, Oct 19, 2020, Oct 1, 2018 (3 updates tracked since 2018).

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About Christopher Aou Do NPPES

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

CHRISTOPHER AOU DO (NPI 1164422671) is an individual family medicine provider in Fullerton, California, licensed in California (20A7260) and active in the NPI registry since July 2005. He is enrolled in Medicare PECOS, maintains a secondary practice location in Fullerton, and is a graduate of College Of Osteo Med Of The Pacific At Pomona (1997).

NPPES Registry Identity

NPI1164422671

Entity TypeIndividualMale

Primary Taxonomy207Q00000X

Provider Legal NameCHRISTOPHER AOUCredential: DO

Location Address1835 SUNNY CREST DRFullerton, CA 92835-3616

Mailing Address1835 Sunny Crest DrFullerton, CA 92835-3616 · (714) 446-5101

Phone(714) 446-5101

Sole ProprietorNo

Medical School CMSCollege Of Osteo Med Of The Pacific At PomonaGraduated 1997

Enumeration DateJuly 26, 2005

Last NPPES UpdateOctober 14, 20213 updates tracked since enumeration

NPPES CertifiedOctober 14, 2021

✔ NPI 1164422671 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 · 20A7260

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.

1835 SUNNY CREST DR, Fullerton, CA 92835

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Secondary Practice Location 1

Location 12151 N Harbor Blvd, SUITE 3200Fullerton, CA 92835-3801 · Phone (714) 446-5101 · Fax (714) 871-3006

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Christopher Aou Do is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2365571593

PECOS Enrollment IDI20100527000161

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 Christopher Aou reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Providence Medical Foundation

2.1 mi

Family Medicine

955 W IMPERIAL HWY STE 110
Brea, CA 92821

Reassigned Medicare billing, California enrollment
1,699 clinicians in this Medicare group

NPI 1871607762 (714) 449-4900

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

Areas of Expertise CMS Part B claims 8

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

222 services146 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

85 services66 patients

Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439

An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.

34 services34 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

20 services18 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

15 services15 patients

Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit G0438

An annual wellness visit is a yearly appointment with your doctor to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's an opportunity to discuss your health status and goals and get a plan tailored for you.

13 services13 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92835 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

$96.36 typical visit price

range $62.96 – $187.60

Typical copayment $24.09 (range $15.74 – $46.90)

Most-billed visit code 99203

Established Patient

$109.96 typical visit price

range $20.84 – $153.61

Typical copayment $27.49 (range $5.21 – $38.40)

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.

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253

DME-Other DME · category DE017N

8 suppliers18 claims40 services$5.77 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 15

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

MRS. DAISY RIVERA LCSW

Social Worker (Clinical)