Bill W. Tang, M.D.
Obstetrics & Gynecology Physician · W Covina, CA
Bill W. Tang, M.D. is an obstetrics & gynecology physician with a practice address in W Covina, California, and NPI 1447216510, issued on Apr 26, 2006. Check the license (California A43358, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Bill W. Tang
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- A43358 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1135 S. Sunset,, W Covina, CA 91790
- Phone
- (626) 338-3788
- Enumerated
- Apr 26, 2006
- Record last updated
- Jan 20, 2011 (not updated in 15 years: call before relying on the address or phone)
- Medicaid ID
- 00A433580 CA
- Medicare enrollment
- Enrolled (PECOS I20120904000432); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Verify Bill W. Tang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A43358Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
1% more Medicare Part D claims than the average obstetrics & gynecology physician in 2024
166 Medicare Part D claims for 58 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.
Most prescribed
- Estradiol19 claims
- Alendronate Sodium18 claims
- Raloxifene Hcl18 claims
- Misoprostol15 claims
- Clotrimazole-Betamethasone13 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: $74.68
2 payments; by number, the most common kind was food and beverage; the largest payer was Intuitive Surgical, Inc. The 21,429 providers of this specialty with any payment received $1,030.61 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.
Bills Medicare through one group practice
- Emanate Health Medical Care FoundationWest Covina, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Bill W. Tang among 5,088 obstetrics & gynecology physician records in California
Bill W. Tang, M.D. is one of 5,088 obstetrics & gynecology physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 52% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated1983 · median 2004 among the 2,700 with a school on file
- Record last updated2011 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in California
There are 5,088 obstetrics & gynecology physician records in California.
All 5,088 in California → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Suneetha Ali, M.D.West Covina, CA 917901679523682
- Daniel Barajas, M.D.West Covina, CA 917901316029317
- J. Sean Begley, MDWest Covina, CA 917901093887747
- Carlos Beharie, M.D.West Covina, CA 917901801094131
- Hooshang Farshidi, MDW Covina, CA 917901164500211
- Alicia Franco, CNPWest Covina, CA 917901538284294
- Michael Grisanti, M.D.West Covina, CA 917901689771560
- Estella Pacificar, MDWest Covina, CA 917901356496285
Common questions
What is Bill W. Tang, M.D.'s NPI number?
Bill W. Tang, M.D.'s National Provider Identifier (NPI) is 1447216510, issued on Apr 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Bill W. Tang, M.D. located?
The NPPES record lists a practice address at 1135 S. Sunset,, W Covina, CA, 91790. Phone: (626) 338-3788. Providers update this record themselves, so call before visiting.
How can I verify Bill W. Tang, M.D.'s license?
NPPES lists California license number A43358, 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 Bill W. Tang, M.D. prescribe under Medicare Part D?
In 2024, Bill W. Tang, M.D. had 166 Medicare Part D claims for 58 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.