William Weiting Tarng, MD
Internal Medicine Physician · Carson, CA
William Weiting Tarng, MD is an internal medicine physician with a practice address in Carson, California, and NPI 1376545723, issued on Aug 15, 2005. Check the license (California A89784, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- William Weiting Tarng
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A89784 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1000 E Dominguez St, Carson, CA 90746
- Phone
- (310) 366-6959
- Enumerated
- Aug 15, 2005
- Record last updated
- Sep 21, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (424) 704-2493
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 1000 E Dominguez St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Leslie Ann Espe, AGNP-CPrimary Care Nurse Practitioner1093259558
- Christine Ferrer, D.C.Chiropractor1629179874
- Clarissa Lagman, PA-CMedical Physician Assistant1912295171
- Adrienne Marsh, NPFamily Nurse Practitioner1891343505
Verify William Weiting Tarng in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A89784Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
46% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,723 Medicare Part D claims for 175 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 115 claims were for opioids.
Most prescribed
- Furosemide75 claims
- Omeprazole67 claims
- Warfarin Sodium56 claims
- Amlodipine Besylate52 claims
- Quetiapine Fumarate52 claims
- Famotidine50 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: $1,004.22
47 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Pharmaceuticals, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
William Weiting Tarng among 17,696 internal medicine physician records in California
William Weiting Tarng, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 95% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2016 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
13 internal medicine physician records list a practice address in Carson
They are 13 of the 806 NPPES records with a practice address in Carson, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Carson → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Aparna Akolkar, MDCarson, CA 907461073613675
- Bijan Ghatan, M.D.Carson, CA 907461841208964
- Estrella Aguinaldo, M.D.Carson, CA 907451548339278
- Osman Alvarado Portillo, MDCarson, CA 907451881379899
- Maria Cecilia Canlas, MDCarson, CA 907451558362905
- Lynn Coates, MDCarson, CA 907451851380315
- Reza Ghanian, MDCarson, CA 907451639151350
- Eugene Hardin, M.D.Carson, CA 907451366479123
Common questions
What is William Weiting Tarng, MD's NPI number?
William Weiting Tarng, MD's National Provider Identifier (NPI) is 1376545723, issued on Aug 15, 2005. An NPI identifies a provider in billing; it is not a license.
Where is William Weiting Tarng, MD located?
The NPPES record lists a practice address at 1000 E Dominguez St, Carson, CA, 90746. Phone: (310) 366-6959. Providers update this record themselves, so call before visiting.
How can I verify William Weiting Tarng, MD's license?
NPPES lists California license number A89784, 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 Weiting Tarng, MD prescribe under Medicare Part D?
In 2024, William Weiting Tarng, MD had 1,723 Medicare Part D claims for 175 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.