Matthew Lanier Williams, MD
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · New Haven, CT
Matthew Lanier Williams, MD is a thoracic surgery (cardiothoracic vascular surgery) physician with a practice address in New Haven, Connecticut, and NPI 1679740005, issued on May 14, 2008. Check the license (Connecticut 69392, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Matthew Lanier Williams
- Credential
- MD
- Primary taxonomy
- Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician 208G00000X
- License numbers
- 69392 CT
TP771 KY
200300106 NC
MD452931 PA
Self-reported in NPPES; status is on the state search - Practice location
- 330 Cedar St # BB204, New Haven, CT 06510
- Phone
- (203) 785-5000
- Enumerated
- May 14, 2008
- Record last updated
- Jan 25, 2023
- Fax
- (203) 785-3346
- Medicare enrollment
- Enrolled (PECOS I20211006001838); accepts Medicare assignment
- Medical or professional school
- Duke University School Of Medicine, 1999
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest thoracic surgery (cardiothoracic vascular surgery) physician records → All 79 in Connecticut → Look up another NPI →
Also registered at 330 Cedar St # BB204
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michael Dewar, MDThoracic Surgery (Cardiothoracic Vascular Surgery) Physician1366450611
Verify Matthew Lanier Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 69392Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
79% fewer Medicare Part D claims than the average thoracic surgery (cardiothoracic vascular surgery) physician in 2024
21 Medicare Part D claims for 11 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 practice group's MIPS final score for 2023 (Medicare payment program): 73.6 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: $651.18
10 payments; by number, the most common kind was food and beverage; the largest payer was Edwards Lifesciences Corporation. 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
- Yale UniversityNew Haven, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Matthew Lanier Williams among 79 thoracic surgery (cardiothoracic vascular surgery) physician records in Connecticut
Matthew Lanier Williams, MD is one of 79 thoracic surgery (cardiothoracic vascular surgery) physician records with a practice address in Connecticut. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 63% of them.
- NPI issued2008 · 63% of these records are older, 28% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated1999 · median 1998 among the 48 with a school on file
- Record last updated2023 · 57% 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 Connecticut 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 Connecticut
There are 79 thoracic surgery (cardiothoracic vascular surgery) physician records in Connecticut.
All 79 in Connecticut → Every provider in New Haven → Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician nationwide →
The 8 thoracic surgery (cardiothoracic vascular surgery) physician records with the nearest ZIP codes
- Muhammad Anwer, MDNew Haven, CT 065101679941462
- Roland Assi, M.D.New Haven, CT 065101184945800
- Justin Blasberg, MDNew Haven, CT 065101538391883
- Pramod Bonde, MDNew Haven, CT 065101013192061
- Umer Darr, MDNew Haven, CT 065101386806982
- Michael Dewar, MDNew Haven, CT 065101366450611
- Peter Gruber, M.D,. PH.DNew Haven, CT 065101053409458
- Vincent Mase, M.D.New Haven, CT 065101205954393
Common questions
What is Matthew Lanier Williams, MD's NPI number?
Matthew Lanier Williams, MD's National Provider Identifier (NPI) is 1679740005, issued on May 14, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Matthew Lanier Williams, MD located?
The NPPES record lists a practice address at 330 Cedar St # BB204, New Haven, CT, 06510. Phone: (203) 785-5000. Providers update this record themselves, so call before visiting.
How can I verify Matthew Lanier Williams, MD's license?
NPPES lists Connecticut license number 69392, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Matthew Lanier Williams, MD prescribe under Medicare Part D?
In 2024, Matthew Lanier Williams, MD had 21 Medicare Part D claims for 11 beneficiaries; the average among thoracic surgery (cardiothoracic vascular surgery) physician prescribers was 101. Part D covers Medicare prescriptions only.
What is Matthew Lanier Williams, MD's MIPS final score?
The 2023 MIPS final score is 73.6 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.