Thomas T, Lee, M.D.
Obstetrics & Gynecology Physician · Montclair, CA
Thomas T, Lee, M.D. is an obstetrics & gynecology physician with a practice address in Montclair, California, and NPI 1942304373, issued on Sep 7, 2006. Check the license (California A37294, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Thomas T, Lee
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- A37294 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4950 San Bernardino St, Montclair, CA 91763
- Phone
- (909) 450-5000
- Enumerated
- Sep 7, 2006
- Record last updated
- Oct 19, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (909) 621-6735
- Medicaid IDs
- GR0051992 CA
GR0051991 CA
GR0051990 CA - Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 4950 San Bernardino St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Thomas T, Lee in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A37294Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
27% more Medicare Part D claims than the average obstetrics & gynecology physician in 2024
209 Medicare Part D claims for 72 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims.
Most prescribed
- Estradiol30 claims
- Premarin24 claims
- Bethanechol Chloride16 claims
- Ibuprofen14 claims
- Metronidazole13 claims
- Tolterodine Tartrate Er11 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: $25.96
1 payment: 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.
Thomas T, Lee among 5,088 obstetrics & gynecology physician records in California
Thomas T, Lee, 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 fileNo · 53% of these records are
- Record last updated2015 · 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 Montclair → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Norman Lamberty, M.D.Montclair, CA 917631902895030
- Corazon Navarro, MDMontclair, CA 917631821139650
- Geeta Patel, M.D.Ontario, CA 917641154414357
- Jong Kim, M.D.,Diamond Bar, CA 917651053419176
- Emily Krasowsky, MDDiamond Bar, CA 917651669933552
- Anne Liao, MDDiamond Bar, CA 917651164099487
- Michael Maung, M.D.Diamond Bar, CA 917651225493810
- Nayan Shah, MDDiamond Bar, CA 917651174631402
Common questions
What is Thomas T, Lee, M.D.'s NPI number?
Thomas T, Lee, M.D.'s National Provider Identifier (NPI) is 1942304373, issued on Sep 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thomas T, Lee, M.D. located?
The NPPES record lists a practice address at 4950 San Bernardino St, Montclair, CA, 91763. Phone: (909) 450-5000. Providers update this record themselves, so call before visiting.
How can I verify Thomas T, Lee, M.D.'s license?
NPPES lists California license number A37294, 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 T, Lee, M.D. prescribe under Medicare Part D?
In 2024, Thomas T, Lee, M.D. had 209 Medicare Part D claims for 72 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.