NPPES file of Aug 9, 2026

Nathan Hwang

Physician Assistant · Tustin, CA

Nathan Hwang is a physician assistant with a practice address in Tustin, California, and NPI 1831964758, issued on Nov 21, 2023. Check the license (California 63338, 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
1831964758
Name
Nathan Hwang
Primary taxonomy
Physician Assistant 363A00000X
License number
63338 CA
Self-reported in NPPES; status is on the state search
Practice location
17612 17TH St Ste 101, Tustin, CA 92780
Phone
(714) 243-5450
Enumerated
Nov 21, 2023
Record last updated
Nov 29, 2023
Medicare enrollment
Enrolled (PECOS I20250908000005); accepts Medicare assignment
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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Also registered at 17612 17TH St Ste 101

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

  1. Sol Estrella, FNP-BCFamily Nurse Practitioner1265976021
  2. Melissa Heavirland, PA-CPhysician Assistant1316767114
  3. Jacob LiscanoFamily Nurse Practitioner1487510681
  4. Henry LuuPhysician Assistant1033879739
  5. Salvatore Puma, PA-CPhysician Assistant1881414217
  6. Jacqueline Qi, PAPhysician Assistant1215539556

Verify Nathan Hwang 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 63338
    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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46% fewer Medicare Part D claims than the average physician assistant in 2024

450 Medicare Part D claims for 283 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.

  1. Nathan Hwang450
  2. Specialty average830

Most prescribed

  1. Methylprednisolone45 claims
  2. Albuterol Sulfate Hfa44 claims
  3. Azithromycin44 claims
  4. Nitrofurantoin Mono-Macro28 claims
  5. Ciprofloxacin Hcl23 claims
  6. Amoxicillin-Clavulanate Potass22 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.

Industry payments in 2024: $125.00

1 payment: food and beverage; the largest payer was Janssen Pharmaceuticals, Inc. The 64,719 providers of this specialty with any payment received $841.65 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Nathan Hwang$125.00
  2. Specialty average$841.65

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. Exer Medical CorporationLos Angeles, CA

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

Nathan Hwang among 14,451 physician assistant records in California

Nathan Hwang is one of 14,451 physician assistant records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 80% of them.

  • NPI issued2023 · 80% of these records are older, 13% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 50% of these records are
  • Graduated2023 · median 2018 among the 7,214 with a school on file
  • Record last updated2023 · 40% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

52 physician assistant records list a practice address in Tustin

They are 52 of the 2,221 NPPES records with a practice address in Tustin, and 14,451 physician assistant records in California.

The 8 physician assistant records with the nearest ZIP codes

  1. Marlie Abrahams, PA-CTustin, CA 927801639409048
  2. Adela Ashraf, PA-CTustin, CA 927801356385215
  3. Heather Bonnville, PHYSICIAN ASSISTANTTustin, CA 927801770762429
  4. Carolyn Calma, P.A.-CTustin, CA 927801427250844
  5. Nicole Farwell, PA-CTustin, CA 927801982726378
  6. Carlos Franco, P.A.Tustin, CA 927801205044492
  7. Edgar Garza, PA-CTustin, CA 927801184980674
  8. Nazema Gosla, PATustin, CA 927801659493674

Common questions

What is Nathan Hwang's NPI number?

Nathan Hwang's National Provider Identifier (NPI) is 1831964758, issued on Nov 21, 2023. An NPI identifies a provider in billing; it is not a license.

Where is Nathan Hwang located?

The NPPES record lists a practice address at 17612 17TH St Ste 101, Tustin, CA, 92780. Phone: (714) 243-5450. Providers update this record themselves, so call before visiting.

How can I verify Nathan Hwang's license?

NPPES lists California license number 63338, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Nathan Hwang prescribe under Medicare Part D?

In 2024, Nathan Hwang had 450 Medicare Part D claims for 283 beneficiaries; the average among physician assistant prescribers was 830. 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.