Thomas Sean William Petit, MD
Internal Medicine Physician · Hawthorne, CA
Thomas Sean William Petit, MD is an internal medicine physician with a practice address in Hawthorne, California, and NPI 1134423387, issued on Jan 3, 2011. Check the license (California C196078, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Thomas Sean William Petit
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- C196078 CA
ME144317 FL
Self-reported in NPPES; status is on the state search - Practice location
- 12923 Inglewood Ave Ste 1, Hawthorne, CA 90250
- Phone
- (310) 675-0395
- Enumerated
- Jan 3, 2011
- Record last updated
- Feb 20, 2026
- Fax
- (310) 675-0073
- Medicare enrollment
- Enrolled (PECOS I20240905003983); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 12923 Inglewood Ave Ste 1
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Maziar Nabavi, M.D.Internal Medicine Physician1770718967
- Bang Pham, M.D.Internal Medicine Physician1124042023
Verify Thomas Sean William Petit in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C196078Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
17% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,645 Medicare Part D claims for 465 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Amlodipine Besylate196 claims
- Atorvastatin Calcium175 claims
- Rosuvastatin Calcium153 claims
- Levothyroxine Sodium102 claims
- Losartan Potassium98 claims
- Lisinopril88 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: $38.35
2 payments; by number, the most common kind was food and beverage; the largest payer was Silk Road Medical, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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
- Ajay G Meka MD IncHawthorne, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thomas Sean William Petit among 17,696 internal medicine physician records in California
Thomas Sean William Petit, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 66% of them.
- NPI issued2011 · 66% of these records are older, 32% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2010 · median 2004 among the 11,065 with a school on file
- Record last updated2026 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
18 internal medicine physician records list a practice address in Hawthorne
They are 18 of the 818 NPPES records with a practice address in Hawthorne, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Hawthorne → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Alfonso Brigham, M.D.Hawthorne, CA 902501902858343
- Jennifer Chiu, M.D.Hawthorne, CA 902501962528430
- Malay Das, MDHawthorne, CA 902501164526224
- Mehmet Demirozu, M.D.Hawthorne, CA 902501295753234
- Valentin Hernandez, M.D.Hawthorne, CA 902501871520320
- Augustine Iluore, MDHawthorne, CA 902501336205442
- Raymond Jing, MDHawthorne, CA 902501518968536
- Mark Kim, M.D.Hawthorne, CA 902501073743621
Common questions
What is Thomas Sean William Petit, MD's NPI number?
Thomas Sean William Petit, MD's National Provider Identifier (NPI) is 1134423387, issued on Jan 3, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Thomas Sean William Petit, MD located?
The NPPES record lists a practice address at 12923 Inglewood Ave Ste 1, Hawthorne, CA, 90250. Phone: (310) 675-0395. Providers update this record themselves, so call before visiting.
How can I verify Thomas Sean William Petit, MD's license?
NPPES lists California license number C196078, 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 Sean William Petit, MD prescribe under Medicare Part D?
In 2024, Thomas Sean William Petit, MD had 2,645 Medicare Part D claims for 465 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.