Khoi Quang Tang, M.D.
Urology Physician · Garden Grove, CA
Khoi Quang Tang, M.D. is a urology physician with a practice address in Garden Grove, California, and NPI 1285615559, issued on Nov 14, 2005. Check the license (California G82013, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Khoi Quang Tang
- Credential
- M.D.
- Primary taxonomy
- Urology Physician 208800000X
- License number
- G82013 CA
Self-reported in NPPES; status is on the state search - Practice location
- 8915 Westminster Ave, Garden Grove, CA 92844
- Phone
- (714) 899-4287
- Enumerated
- Nov 14, 2005
- Record last updated
- Aug 17, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (714) 899-2876
- Entity
- Type 1 · individual
8 nearest urology physician records → All 1,524 in California → Look up another NPI →
Also registered at 8915 Westminster Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Dai Pham, M.D.Internal Medicine Physician1730542192
Verify Khoi Quang Tang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G82013Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5.1 times the Medicare Part D claims of the average urology physician in 2024
6,806 Medicare Part D claims for 1,222 beneficiaries, against an average of 1,340 among the 10,782 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 23 claims were for opioids.
Most prescribed
- Tamsulosin Hcl2,387 claims
- Finasteride2,366 claims
- Ciprofloxacin Hcl310 claims
- Myrbetriq297 claims
- Oxybutynin Chloride267 claims
- Sulfamethoxazole-Trimethoprim226 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.
The MIPS final score for 2023 (Medicare payment program): 0 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $120.25
1 payment: food and beverage; the largest payer was Gilead Sciences, Inc. The 9,340 providers of this specialty with any payment received $3,800.04 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.
Khoi Quang Tang among 1,524 urology physician records in California
Khoi Quang Tang, M.D. is one of 1,524 urology physician records with a practice address in California. 82% 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, 92% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileNo · 69% of these records are
- Record last updated2011 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208800000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Urology Physician providers in California
There are 1,524 urology physician records in California.
All 1,524 in California → Every provider in Garden Grove → Urology Physician nationwide →
The 8 urology physician records with the nearest ZIP codes
- Junghwan Choi, M.D.Garden Grove, CA 928431255391710
- Ali Alavi, M.D.Fullerton, CA 928351508936592
- Stuart Feldman, M.D.Fullerton, CA 928351508089707
- Michael Gazzaniga, MDFullerton, CA 928351396858163
- William Hohn, M.D.Fullerton, CA 928351396084422
- Scott Hughes, D.O.Fullerton, CA 928351285921882
- Harjivan Kohli, MDFullerton, CA 928351205322393
- Michael MaidaaFullerton, CA 928351366008641
Common questions
What is Khoi Quang Tang, M.D.'s NPI number?
Khoi Quang Tang, M.D.'s National Provider Identifier (NPI) is 1285615559, issued on Nov 14, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Khoi Quang Tang, M.D. located?
The NPPES record lists a practice address at 8915 Westminster Ave, Garden Grove, CA, 92844. Phone: (714) 899-4287. Providers update this record themselves, so call before visiting.
How can I verify Khoi Quang Tang, M.D.'s license?
NPPES lists California license number G82013, 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 Khoi Quang Tang, M.D. prescribe under Medicare Part D?
In 2024, Khoi Quang Tang, M.D. had 6,806 Medicare Part D claims for 1,222 beneficiaries; the average among urology physician prescribers was 1,340. Part D covers Medicare prescriptions only.
What is Khoi Quang Tang, M.D.'s MIPS final score?
The 2023 MIPS final score is 0 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.