Peter Chao, PHARM.D.
Ambulatory Care Pharmacist · Chino, CA
Peter Chao, PHARM.D. is an ambulatory care pharmacist with a practice address in Chino, California, and NPI 1427421577, issued on Nov 10, 2015. Check the license (California 73944, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Peter Chao
- Credential
- PHARM.D.
- Primary taxonomy
- Ambulatory Care Pharmacist 1835P2201X
- License number
- 73944 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3943 Grand Ave, Chino, CA 91710
- Phone
- (909) 590-7597
- Enumerated
- Nov 10, 2015
- Record last updated
- Mar 18, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (909) 590-9692
- Entity
- Type 1 · individual
8 nearest ambulatory care pharmacist records → All 485 in California → Look up another NPI →
Also registered at 3943 Grand Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alan BuiPharmacist1972093490
- Uyen CaoPharmacist1154730208
- Noah Chung, PHARMDPharmacist1891104063
- Tammy Park, PHARM D,RPHPharmacist1710358015
- Al Vincent Romero, O.D.Optometrist1952429748
Verify Peter Chao in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 73944Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average ambulatory care pharmacist in 2024
12 Medicare Part D claims, against an average of 527 among the 449 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Naloxone Hcl12 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.
Peter Chao among 485 ambulatory care pharmacist records in California
Peter Chao, PHARM.D. is one of 485 ambulatory care pharmacist records with a practice address in California. 39% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 10% of them.
- NPI issued2015 · 10% of these records are older, 84% newer
- In a Medicare fileYes · 39% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2017 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1835P2201X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ambulatory Care Pharmacist providers in California
There are 485 ambulatory care pharmacist records in California.
All 485 in California → Every provider in Chino → Ambulatory Care Pharmacist nationwide →
The 8 ambulatory care pharmacist records with the nearest ZIP codes
- Christine SasakiRancho Cucamonga, CA 917301386094662
- John GendyMontclair, CA 917631457898587
- Reem AljanabiPomona, CA 917661447880091
- Joyce Lim, PHARMACISTPomona, CA 917671871176370
- Canh Do, PHARMDRosemead, CA 917701437668829
- Minh Chau, PHARM.D.Temple City, CA 917801831638741
- Jeany Jun, PHARMD, APH, MPHWest Covina, CA 917901659478907
- Alexandra Su, PHARMDAlhambra, CA 918011437906344
Common questions
What is Peter Chao, PHARM.D.'s NPI number?
Peter Chao, PHARM.D.'s National Provider Identifier (NPI) is 1427421577, issued on Nov 10, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Peter Chao, PHARM.D. located?
The NPPES record lists a practice address at 3943 Grand Ave, Chino, CA, 91710. Phone: (909) 590-7597. Providers update this record themselves, so call before visiting.
How can I verify Peter Chao, PHARM.D.'s license?
NPPES lists California license number 73944, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Peter Chao, PHARM.D. prescribe under Medicare Part D?
In 2024, Peter Chao, PHARM.D. had 12 Medicare Part D claims; the average among ambulatory care pharmacist prescribers was 527. 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.