Trevor M. Williams, M.D.
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Carmichael, CA
Trevor M. Williams, M.D. is a thoracic surgery (cardiothoracic vascular surgery) physician with a practice address in Carmichael, California, and NPI 1528294436, issued on Jun 5, 2009. Check the license (California A87074, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Trevor M. Williams
- Credential
- M.D.
- Primary taxonomy
- Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician 208G00000X
- License number
- A87074 CA
Self-reported in NPPES; status is on the state search - Practice location
- 6511 Coyle Ave Ste 200, Carmichael, CA 95608
- Phone
- (916) 536-3665
- Enumerated
- Jun 5, 2009
- Record last updated
- Jul 31, 2026
- Fax
- (916) 536-3593
- Medicare enrollment
- Enrolled (PECOS I20090909000472); accepts Medicare assignment
- Medical or professional school
- University Of California, San Francisco School Of Medicine, 2009
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest thoracic surgery (cardiothoracic vascular surgery) physician records → All 634 in California → Look up another NPI →
Also registered at 6511 Coyle Ave Ste 200
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Trevor M. Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A87074Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
62% fewer Medicare Part D claims than the average thoracic surgery (cardiothoracic vascular surgery) physician in 2024
38 Medicare Part D claims for 17 beneficiaries, against an average of 101 among the 2,587 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.
The MIPS final score for 2023 (Medicare payment program): 96.5 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: $493.79
9 payments; by number, the most common kind was food and beverage; the largest payer was Davol Inc. The 4,047 providers of this specialty with any payment received $7,828.84 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
- Dignity Health Medical FoundationCarmichael, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Trevor M. Williams among 634 thoracic surgery (cardiothoracic vascular surgery) physician records in California
Trevor M. Williams, M.D. is one of 634 thoracic surgery (cardiothoracic vascular surgery) physician records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 70% of them.
- NPI issued2009 · 70% of these records are older, 28% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2009 · median 1997 among the 408 with a school on file
- Record last updated2026 · 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 208G00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician providers in California
There are 634 thoracic surgery (cardiothoracic vascular surgery) physician records in California.
All 634 in California → Every provider in Carmichael → Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician nationwide →
The 8 thoracic surgery (cardiothoracic vascular surgery) physician records with the nearest ZIP codes
- Larry Cardoza, MDCarmichael, CA 956081790721322
- Timothy MullinDavis, CA 956181679406896
- Sterling Humphrey, MDRoseville, CA 956611033346465
- Stephen Maxwell, M.D.Roseville, CA 956611043223936
- G. Jeffrey Smith, MDRoseville, CA 956611750431565
- Joseph Arcidi, M.D.Eureka, CA 955011528024544
- Joseph Cohn, MDSanta Rosa, CA 954091023071065
- Ramzi Deeik, M.D.Santa Rosa, CA 954051093746182
Common questions
What is Trevor M. Williams, M.D.'s NPI number?
Trevor M. Williams, M.D.'s National Provider Identifier (NPI) is 1528294436, issued on Jun 5, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Trevor M. Williams, M.D. located?
The NPPES record lists a practice address at 6511 Coyle Ave Ste 200, Carmichael, CA, 95608. Phone: (916) 536-3665. Providers update this record themselves, so call before visiting.
How can I verify Trevor M. Williams, M.D.'s license?
NPPES lists California license number A87074, 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 Trevor M. Williams, M.D. prescribe under Medicare Part D?
In 2024, Trevor M. Williams, M.D. had 38 Medicare Part D claims for 17 beneficiaries; the average among thoracic surgery (cardiothoracic vascular surgery) physician prescribers was 101. Part D covers Medicare prescriptions only.
What is Trevor M. Williams, M.D.'s MIPS final score?
The 2023 MIPS final score is 96.5 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.