NPPES file of Aug 9, 2026

Katty Chou

Family Medicine Physician · Rancho Cucamonga, CA

Katty Chou is a family medicine physician with a practice address in Rancho Cucamonga, California, and NPI 1023297934, issued on Oct 26, 2007. Check the license (California A76369, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1023297934
Name
Katty Chou
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
A76369 CA
Self-reported in NPPES; status is on the state search
Practice location
5885 Haven Avenue, Rancho Cucamonga, CA 91737
Phone
(909) 652-6000
Enumerated
Oct 26, 2007
Record last updated
Dec 6, 2023
Medicare enrollment
Enrolled (PECOS I20060127000845); accepts Medicare assignment
Medical or professional school
New York Medical College, 1998
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Verify Katty Chou in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A76369
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Industry payments in 2024: $19.19

1 payment: food and beverage; the largest payer was Dexcom, Inc. 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.

  1. Katty Chou$19.19
  2. Specialty average$902.55

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

  1. Faculty Physicians And Surgeons OF LlusmLoma Linda, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Katty Chou among 17,133 family medicine physician records in California

Katty Chou 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 2007, is newer than 41% of them.

  • NPI issued2007 · 41% of these records are older, 47% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 62% of these records are
  • Graduated1998 · median 2005 among the 10,652 with a school on file
  • Record last updated2023 · 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).

62 family medicine physician records list a practice address in Rancho Cucamonga

They are 62 of the 4,579 NPPES records with a practice address in Rancho Cucamonga, and 17,133 family medicine physician records in California.

The 8 family medicine physician records with the nearest ZIP codes

  1. Crisostomo Armada, D.O.Rancho Cucamonga, CA 917371902823701
  2. Henry Cho, MDRancho Cucamonga, CA 917371710484746
  3. Linda Lee, M.D.Rancho Cucamonga, CA 917371336188838
  4. Xuan Nguyet Nguyen, M.D.Rancho Cucamonga, CA 917371871539551
  5. Truongson Nguyen, D.O.Rancho Cucamonga, CA 917371629517792
  6. Theodore Gerard Caspe, MDRancho Cucamonga, CA 917391942349113
  7. Jeffrey Haga, DORancho Cucamonga, CA 917391902847320
  8. Jane Himmelvo, M.D.Rancho Cucamonga, CA 917391235170440

Common questions

What is Katty Chou's NPI number?

Katty Chou's National Provider Identifier (NPI) is 1023297934, issued on Oct 26, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Katty Chou located?

The NPPES record lists a practice address at 5885 Haven Avenue, Rancho Cucamonga, CA, 91737. Phone: (909) 652-6000. Providers update this record themselves, so call before visiting.

How can I verify Katty Chou's license?

NPPES lists California license number A76369, 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.

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.