Thomas William Gaither, MD
Urology Physician · San Francisco, CA
Thomas William Gaither, MD is a urology physician with a practice address in San Francisco, California, and NPI 1477058824, issued on Mar 28, 2018. Check the license (California A166338, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Thomas William Gaither
- Credential
- MD
- Primary taxonomy
- Urology Physician 208800000X
- License number
- A166338 CA
Self-reported in NPPES; status is on the state search - Practice location
- 400 Parnassus Ave # A610, San Francisco, CA 94143
- Phone
- (415) 353-2200
- Enumerated
- Mar 28, 2018
- Record last updated
- Nov 3, 2025
- Fax
- (415) 353-2480
- Medicare enrollment
- Enrolled (PECOS I20240621000545); accepts Medicare assignment
- Medical or professional school
- University Of California, San Francisco School Of Medicine, 2018
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 400 Parnassus Ave # A610
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Ashwin BalakrishnanUrology Physician1932660719
- Madeleine BallStudent in an Organized Health Care Education/Training Program1346004652
- Anthony Bella, M.D.Urology Physician1538278569
- Benjamin Breyer, M.D.Urology Physician1316160211
Verify Thomas William Gaither in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A166338Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average urology physician in 2024
26 Medicare Part D claims for 20 beneficiaries, against an average of 1,340 among the 10,782 providers of this specialty who prescribed in Part D.
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: $20.71
1 payment: food and beverage; the largest payer was Intuitive Surgical, 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.
Bills Medicare through 3 group practices
- Ucsf Medical Group Business ServicesSan Francisco, CA
- University OF California San FranciscoSan Francisco, CA
- University OF California Sfgh Medical GroupSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Urology Physician providers in California
There are 1,524 urology physician records in California.
Other urology physician records in California
- David Aaronson, MDOakland, CA1215053129
- Jason Abber, MDPanorama City, CA1356366926
- Marc Abboud, MDLos Alamitos, CA1265096531
- George AbdelsayedAnaheim, CA1568721843
- Garen AbediDowney, CA1285909051
- Jennifer Abidari, MDStanford, CA1811098197
- Sherif Aboseif, MDOxnard, CA1093882995
- Parwiz Abrahimi, M.D., PH.D.Los Angeles, CA1154857613
- Anthony Acquaviva, MDVallejo, CA1457439283
- Theodore Affue, M.D.El Centro, CA1386674000
Common questions
What is Thomas William Gaither, MD's NPI number?
Thomas William Gaither, MD's National Provider Identifier (NPI) is 1477058824, issued on Mar 28, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Thomas William Gaither, MD located?
The NPPES record lists a practice address at 400 Parnassus Ave # A610, San Francisco, CA, 94143. Phone: (415) 353-2200. Providers update this record themselves, so call before visiting.
How can I verify Thomas William Gaither, MD's license?
NPPES lists California license number A166338, 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 Thomas William Gaither, MD prescribe under Medicare Part D?
In 2024, Thomas William Gaither, MD had 26 Medicare Part D claims for 20 beneficiaries; the average among urology physician prescribers was 1,340. 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.