NPPES file of Aug 9, 2026

Adrian Jonathan Ichwan, PHARMD

Pharmacist · Diamond Bar, CA

Adrian Jonathan Ichwan, PHARMD is a pharmacist with a practice address in Diamond Bar, California, and NPI 1619767092, issued on May 8, 2025. Check the license (California 90903, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

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

NPPES recordNPPES file of Aug 9, 2026
1619767092
Name
Adrian Jonathan Ichwan
Credential
PHARMD
Primary taxonomy
Pharmacist 183500000X
License number
90903 CA
Self-reported in NPPES; status is on the state search
Practice location
747 Grand Ave, Diamond Bar, CA 91765
Phone
(909) 610-2150
Enumerated
May 8, 2025
Record last updated
Jul 17, 2025
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 pharmacist records → All 32,533 in California → Look up another NPI →

Also registered at 747 Grand Ave

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

  1. Jenny Chang, PHARMDPharmacist1407192248
  2. Suzie Cho, PHARM DPharmacist1972821759
  3. Nadia DifronzoPharmacist1477805364
  4. Steven Lew, PHARMDPharmacist1669752002
  5. Tom LiPharmacist1073947248
  6. Susan NguyenPharmacist1316224090

Verify Adrian Jonathan Ichwan 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 90903    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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Adrian Jonathan Ichwan among 32,533 pharmacist records in California

Adrian Jonathan Ichwan, PHARMD 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 not. Its NPI, issued in 2025, is newer than 95% of them.

  • NPI issued2025 · 95% of these records are older, 2% newer
  • In a Medicare fileNo · 15% of these records are
  • In the CMS Doctors and Clinicians fileNo · under 1% of these records are
  • Record last updated2025 · 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).

42 pharmacist records list a practice address in Diamond Bar

They are 42 of the 598 NPPES records with a practice address in Diamond Bar, and 32,533 pharmacist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 32,533 in California → Every provider in Diamond Bar → Pharmacist nationwide →

The 8 pharmacist records with the nearest ZIP codes

  1. Douglas Barcon, PHARM.D.Diamond Bar, CA 917651801034525
  2. Jenny Chang, PHARMDDiamond Bar, CA 917651407192248
  3. Suzie Cho, PHARM DDiamond Bar, CA 917651972821759
  4. Nadia DifronzoDiamond Bar, CA 917651477805364
  5. Evelyn-Anh Hoang, PHARM. D.Diamond Bar, CA 917651962777813
  6. Hsing Hsueh, RPHDiamond Bar, CA 917651689993701
  7. Caleb Kim, RPHDiamond Bar, CA 917651700155066
  8. Steven Lew, PHARMDDiamond Bar, CA 917651669752002

Common questions

What is Adrian Jonathan Ichwan, PHARMD's NPI number?

Adrian Jonathan Ichwan, PHARMD's National Provider Identifier (NPI) is 1619767092, issued on May 8, 2025. An NPI identifies a provider in billing; it is not a license.

Where is Adrian Jonathan Ichwan, PHARMD located?

The NPPES record lists a practice address at 747 Grand Ave, Diamond Bar, CA, 91765. Phone: (909) 610-2150. Providers update this record themselves, so call before visiting.

How can I verify Adrian Jonathan Ichwan, PHARMD's license?

NPPES lists California license number 90903, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity 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. 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.