Registry data as of Aug 27, 2026

Thuy Bach

Physician Assistant · Claremont, CA

Thuy Bach is a physician assistant with a practice address in Claremont, California, and NPI 1912443086, issued on Jan 13, 2017. Check the license with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, loaded Aug 27, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1912443086
Name
Thuy Bach
Primary taxonomy
Physician Assistant 363A00000X
Practice location
1601 Monte Vista Ave Ste 100, Claremont, CA 91711
Phone
(909) 630-7938
Enumerated
Jan 13, 2017
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 1601 Monte Vista Ave Ste 100

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

  1. Victor Alvarez Casillas, SA-C, M.D.(IMG)Family Medicine Physician1104111566
  2. Janae HarrisFamily Nurse Practitioner1003469693
  3. Millie Mae Hathaway, DOFamily Medicine Physician1043847627
  4. Lester Holstein, MDFamily Medicine Physician1720088792
  5. Jeffrey Ijadi, MDSports Medicine (Family Medicine) Physician1134415854
  6. Tiffany Kilbas, D.O.Family Medicine Physician1841855962

Verify Thuy Bach in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this professionCheck 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.

Statewide context: the Medical Board of California reported 374 disciplinary actions in FY 2022-23. California discipline data →

39% more Medicare Part D claims than the average physician assistant in 2024

1,155 Medicare Part D claims for 204 beneficiaries, against an average of 832 among the 95,030 providers of this specialty who prescribed in Part D. 28 claims were for opioids.

  1. Thuy Bach1,155
  2. Specialty average832

Most prescribed

  1. Atorvastatin Calcium83 claims
  2. Amlodipine Besylate61 claims
  3. Omeprazole44 claims
  4. Losartan Potassium42 claims
  5. Levothyroxine Sodium41 claims
  6. Lisinopril36 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.

One hospital or facility affiliation

  1. Premier Family Medicine Associates, IncClaremont, CA

Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

30 physician assistant records list a Claremont practice address

They are 30 of the 800 NPPES records with a Claremont practice address, and 13,861 physician assistant records in California.

Other physician assistant records in California

  1. Marcia -Galbraith, PAStockton, CA1407143274
  2. Danny Abad, PAOrange, CA1477158673
  3. Lea Dominique Abadies, PATustin, CA1124754254
  4. Rea Elizabeth Abaniel, P.A.-CSeal Beach, CA1396173621
  5. Ramina Abbasi, PA-CSignal Hill, CA1093448300
  6. Ariel Abbott, PA-CStockton, CA1780334342
  7. Barrie Abbott, PA-CAnza, CA1861602575
  8. Elizabeth Abbott, PA-CSan Diego, CA1437540762
  9. Angela Abboud, MMS, PA-CSanta Rosa, CA1114399334
  10. Fatimeh Abdallah, P.A.-CNewport Beach, CA1487002218

Common questions

What is Thuy Bach's NPI number?

Thuy Bach's National Provider Identifier (NPI) is 1912443086, issued on Jan 13, 2017. An NPI identifies a provider in billing; it is not a license.

Where is Thuy Bach located?

The NPPES record lists a practice address at 1601 Monte Vista Ave Ste 100, Claremont, CA, 91711. Phone: (909) 630-7938. Providers update this record themselves, so call before visiting.

How can I verify Thuy Bach's license?

Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Thuy Bach prescribe under Medicare Part D?

In 2024, Thuy Bach had 1,155 Medicare Part D claims for 204 beneficiaries; the average among physician assistant prescribers was 832. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.