NPPES file of Aug 9, 2026

Chi Ngo, PHARM.D.

Pharmacist · Downey, CA

Chi Ngo, PHARM.D. is a pharmacist with a practice address in Downey, California, and NPI 1861400954, issued on Aug 4, 2006. Check the license (California 58154, 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
1861400954
Name
Chi Ngo
Credential
PHARM.D.
Primary taxonomy
Pharmacist 183500000X
License number
58154 CA
Self-reported in NPPES; status is on the state search
Practice location
9449 Imperial Hwy, Downey, CA 90242
Phone
(562) 657-4442
Enumerated
Aug 4, 2006
Record last updated
Oct 5, 2019 (not updated in 7 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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Also registered at 9449 Imperial Hwy

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

  1. Gary AfferinoPharmacist1437696267
  2. Stephanie Angarita, M.D.Surgical Oncology Physician1003259219
  3. Melanie Aoki, PH.D.Cognitive & Behavioral Psychologist1588865489
  4. Glenn Arnoco, FNPFamily Medicine Physician1629633391
  5. Shant Ashdjian, M.D.Obstetrics & Gynecology Physician1841502457
  6. Sana Ashraf, MDPediatric Cardiology Physician1316177215

Verify Chi 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 58154
    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

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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4.3 times the Medicare Part D claims of the average pharmacist in 2024

514 Medicare Part D claims for 198 beneficiaries, against an average of 119 among the 28,524 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.

  1. Chi Ngo514
  2. Specialty average119

Most prescribed

  1. Metformin Hcl Er92 claims
  2. Metformin Hcl44 claims
  3. Atorvastatin Calcium41 claims
  4. Glipizide33 claims
  5. Losartan Potassium29 claims
  6. Lisinopril25 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 Ngo among 32,533 pharmacist records in California

Chi Ngo, PHARM.D. is one of 32,533 pharmacist records with a practice address in California. 15% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than under 1% of them.

  • NPI issued2006 · under 1% of these records are older, 94% newer
  • In a Medicare fileYes · 15% of these records are
  • In the CMS Doctors and Clinicians fileNo · under 1% of these records are
  • Record last updated2019 · 76% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 183500000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

248 pharmacist records list a practice address in Downey

They are 248 of the 3,607 NPPES records with a practice address in Downey, and 32,533 pharmacist records in California.

The 8 pharmacist records with the nearest ZIP codes

  1. Leona Dombroske, PHARMDDowney, CA 902421730272600
  2. Linda Falsafi-Haghighi, PHARM.D.Downey, CA 902421457447351
  3. Steve Gray, PHARMDDowney, CA 902421295769669
  4. Erwin Jeong, PHARM.D.Downey, CA 902421003913989
  5. Pamela Judd, PHARM.D.Downey, CA 902421336235266
  6. Denis Kitayama, PHARM.D.Downey, CA 902421508956954
  7. Rebecca Lumasag, B.S.Downey, CA 902421053494500
  8. Denis Matsuoka, PHARMD.Downey, CA 902421801983499

Common questions

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

Chi Ngo, PHARM.D.'s National Provider Identifier (NPI) is 1861400954, issued on Aug 4, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Chi Ngo, PHARM.D. located?

The NPPES record lists a practice address at 9449 Imperial Hwy, Downey, CA, 90242. Phone: (562) 657-4442. Providers update this record themselves, so call before visiting.

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

NPPES lists California license number 58154, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

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

In 2024, Chi Ngo, PHARM.D. had 514 Medicare Part D claims for 198 beneficiaries; the average among pharmacist prescribers was 119. 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.