Timothy Tsui, M.D.
Obstetrics & Gynecology Physician · Los Angeles, CA
Timothy Tsui, M.D. is an obstetrics & gynecology physician with a practice address in Los Angeles, California, and NPI 1578575791, issued on Aug 13, 2006. Check the license (California A71366, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Timothy Tsui
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- A71366 CA
Self-reported in NPPES; status is on the state search - Practice location
- 8631 W 3RD St Ste 810E, Los Angeles, CA 90048
- Phone
- (310) 967-4325
- Enumerated
- Aug 13, 2006
- Record last updated
- Feb 6, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (310) 967-3892
- Medicare enrollment
- Enrolled (PECOS I20100810001093); accepts Medicare assignment
- Medical or professional school
- University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 1989
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 8631 W 3RD St Ste 810E
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Annissa Bridgeforth, RNWomen's Health Nurse Practitioner1174210355
- Lisa Obasi, MDObstetrics & Gynecology Physician1952954794
Verify Timothy Tsui in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A71366Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
29% more Medicare Part D claims than the average obstetrics & gynecology physician in 2024
213 Medicare Part D claims for 67 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.
Most prescribed
- Estradiol (Twice Weekly)28 claims
- Estradiol27 claims
- Metronidazole24 claims
- Progesterone23 claims
- Yuvafem15 claims
- Fluconazole14 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 practice group's MIPS final score for 2023 (Medicare payment program): 85.7 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $236.02
11 payments; by number, the most common kind was food and beverage; the largest payer was Pfizer 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
- Cedars-Sinai Medical Care FoundationLos Angeles, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Timothy Tsui among 5,088 obstetrics & gynecology physician records in California
Timothy Tsui, 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
- Graduated1989 · median 2004 among the 2,700 with a school on file
- Record last updated2020 · 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 → Every provider in Los Angeles → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Carolyn Alexander, M.D.Los Angeles, CA 900481073578332
- Paula Bernstein, MDWest Hollywood, CA 900481891788501
- Sushma Bhadauria, M.D.Los Angeles, CA 900481164472460
- Aminah Bliss, M.D.Los Angeles, CA 900481225087463
- Gregory Ewertz, M.D.Los Angeles, CA 900481841248143
- Kimberly Gregory, M.D.Los Angeles, CA 900481033192356
- Paul Hackmeyer, M.D.Los Angeles, CA 900481023042363
- Bryna Harwood, MDWest Hollywood, CA 900481255304044
Common questions
What is Timothy Tsui, M.D.'s NPI number?
Timothy Tsui, M.D.'s National Provider Identifier (NPI) is 1578575791, issued on Aug 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Timothy Tsui, M.D. located?
The NPPES record lists a practice address at 8631 W 3RD St Ste 810E, Los Angeles, CA, 90048. Phone: (310) 967-4325. Providers update this record themselves, so call before visiting.
How can I verify Timothy Tsui, M.D.'s license?
NPPES lists California license number A71366, 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 Timothy Tsui, M.D. prescribe under Medicare Part D?
In 2024, Timothy Tsui, M.D. had 213 Medicare Part D claims for 67 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
What is Timothy Tsui, M.D.'s MIPS final score?
The 2023 MIPS final score is 85.7 of 100, reported for the practice group. 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.