NPPES file of Aug 9, 2026

William C. Ta, M.D.

General Practice Physician · Hoopa, CA

William C. Ta, M.D. is a general practice physician with a practice address in Hoopa, California, and NPI 1790955300, issued on Mar 11, 2008. Check the license (California A118947, as entered in NPPES) on the Medical Board of California; 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
1790955300
Name
William C. Ta
Credential
M.D.
Primary taxonomy
General Practice Physician 208D00000X
License number
A118947 CA
Self-reported in NPPES; status is on the state search
Practice location
1200 Airport Road, Hoopa, CA 95546
Phone
(530) 625-4261
Enumerated
Mar 11, 2008
Record last updated
Apr 4, 2013 (not updated in 13 years: call before relying on the address or phone)
Fax
(530) 625-5171
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.
Download card Updates feed

Also registered at 1200 Airport Road

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

  1. Deborah Romero, FNP. BC., CDEFamily Nurse Practitioner1740580968
  2. Eva Smith, M.D., M.P.H.Addiction Medicine (Family Medicine) Physician1982773099
  3. Evelyn Takane, DDSDentist1750501607
  4. Susan Walsh, FNPFamily Nurse Practitioner1306915418

Verify William C. Ta in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A118947
    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
Open 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.

Is this page about you? You can ask us to correct, restrict or remove it: how.

2.2 times the Medicare Part D claims of the average general practice physician in 2024

6,738 Medicare Part D claims for 429 beneficiaries, against an average of 3,030 among the 8,395 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 90 claims were for opioids.

  1. William Ta6,738
  2. Specialty average3,030

Most prescribed

  1. Atorvastatin Calcium433 claims
  2. Amlodipine Besylate374 claims
  3. Metformin Hcl273 claims
  4. Omeprazole234 claims
  5. Metoprolol Succinate200 claims
  6. Simvastatin192 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: $1,386.74

44 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. The 4,259 providers of this specialty with any payment received $1,273.40 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. William Ta$1,386.74
  2. Specialty average$1,273.40

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

William C. Ta among 1,956 general practice physician records in California

William C. Ta, M.D. is one of 1,956 general practice physician records with a practice address in California. 48% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 50% of them.

  • NPI issued2008 · 50% of these records are older, 46% newer
  • In a Medicare fileYes · 48% of these records are
  • In the CMS Doctors and Clinicians fileNo · 27% of these records are
  • Record last updated2013 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208D00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

1 general practice physician record lists a practice address in Hoopa

They are 1 of the 32 NPPES records with a practice address in Hoopa, and 1,956 general practice physician records in California.

The 8 general practice physician records with the nearest ZIP codes

  1. Mark Roback, DOFortuna, CA 955401801969829
  2. Helena Vipond, M.D.Smith River, CA 955671023239191
  3. Frances Day, M.D.Eureka, CA 955011578623203
  4. Marcelle Mahan, M.D.Eureka, CA 955011245292085
  5. Lawrence Wieland, MDEureka, CA 955011104815380
  6. Tedd Dawson, MDWillits, CA 954901457330680
  7. Mark Vaughan, M.D.Auburn, CA 956021053303461
  8. Chris Boseovski, MDAuburn, CA 956031508940107

Common questions

What is William C. Ta, M.D.'s NPI number?

William C. Ta, M.D.'s National Provider Identifier (NPI) is 1790955300, issued on Mar 11, 2008. An NPI identifies a provider in billing; it is not a license.

Where is William C. Ta, M.D. located?

The NPPES record lists a practice address at 1200 Airport Road, Hoopa, CA, 95546. Phone: (530) 625-4261. Providers update this record themselves, so call before visiting.

How can I verify William C. Ta, M.D.'s license?

NPPES lists California license number A118947, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does William C. Ta, M.D. prescribe under Medicare Part D?

In 2024, William C. Ta, M.D. had 6,738 Medicare Part D claims for 429 beneficiaries; the average among general practice physician prescribers was 3,030. 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.