NPPES file of Aug 9, 2026

Chi Kien Ngo, O.D.

Optometrist · Pleasanton, CA

Chi Kien Ngo, O.D. is an optometrist with a practice address in Pleasanton, California, and NPI 1174659973, issued on Feb 26, 2007. Check the license (California OPT12625T, as entered in NPPES) with the California board that licenses this profession; 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
1174659973
Name
Chi Kien Ngo
Credential
O.D.
Primary taxonomy
Optometrist 152W00000X
License number
OPT12625T CA
Self-reported in NPPES; status is on the state search
Practice location
4501 Rosewood Dr, Pleasanton, CA 94588
Phone
(925) 225-9036
Enumerated
Feb 26, 2007
Record last updated
Dec 30, 2021 (not updated in 5 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest optometrist records → All 8,308 in California → Look up another NPI →

Also registered at 4501 Rosewood Dr

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Quinn ChangPharmacist1578971016
  2. Jennifer Delfante, PHARM. D.Pharmacist1265809735
  3. Steven Hong, O.D.Optometrist1609906783
  4. Kai Chung Lau, PHARM.D.Pharmacist1700294493
  5. Ruiyu Wang, PHARM DPharmacist1457769903

Verify Chi Kien Ngo in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license OPT12625T    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
Find the California license search

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93% fewer Medicare Part D claims than the average optometrist in 2024

20 Medicare Part D claims, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 65% of claims.

  1. Chi Ngo20
  2. Specialty average277

Most prescribed

  1. Cyclosporine13 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.

Chi Kien Ngo among 8,308 optometrist records in California

Chi Kien Ngo, O.D. is one of 8,308 optometrist records with a practice address in California. 67% 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 34% of them.

  • NPI issued2007 · 34% of these records are older, 46% newer
  • In a Medicare fileYes · 67% of these records are
  • In the CMS Doctors and Clinicians fileNo · 43% of these records are
  • Record last updated2021 · 67% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152W00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

44 optometrist records list a practice address in Pleasanton

They are 44 of the 2,213 NPPES records with a practice address in Pleasanton, and 8,308 optometrist records in California.

All 8,308 in California → Every provider in Pleasanton → Optometrist nationwide →

The 8 optometrist records with the nearest ZIP codes

  1. Debra Atchinson, O.D.Pleasanton, CA 945881356408231
  2. Charles Hom, O.D.Pleasanton, CA 945881023104296
  3. Ketul Joshi, ODPleasanton, CA 945881922048537
  4. Edward Laubach, O.D.Pleasanton, CA 945881104853696
  5. Anissa Lee, O.D.Pleasanton, CA 945881366593873
  6. Douglas Lee, O.D.Pleasanton, CA 945881245382431
  7. Edwin Liu, O.D.Pleasanton, CA 945881114997772
  8. Amy Liu Longacre, O.D.Pleasanton, CA 945881750351268

Common questions

What is Chi Kien Ngo, O.D.'s NPI number?

Chi Kien Ngo, O.D.'s National Provider Identifier (NPI) is 1174659973, issued on Feb 26, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Chi Kien Ngo, O.D. located?

The NPPES record lists a practice address at 4501 Rosewood Dr, Pleasanton, CA, 94588. Phone: (925) 225-9036. Providers update this record themselves, so call before visiting.

How can I verify Chi Kien Ngo, O.D.'s license?

NPPES lists California license number OPT12625T, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Chi Kien Ngo, O.D. prescribe under Medicare Part D?

In 2024, Chi Kien Ngo, O.D. had 20 Medicare Part D claims; the average among optometrist prescribers was 277. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.