Ann-Marie Williams, PA-C
Surgical Physician Assistant · Watertown, CT
Ann-Marie Williams, PA-C is a surgical physician assistant with a practice address in Watertown, Connecticut, and NPI 1164549341, issued on Mar 23, 2007. Check the license (Connecticut 002034, as entered in NPPES) with the Connecticut board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ann-Marie Williams
- Credential
- PA-C
- Primary taxonomy
- Surgical Physician Assistant 363AS0400X
- License numbers
- 002034 CT
2034 CT
Self-reported in NPPES; status is on the state search - Practice location
- 595 Straits Tpke, Watertown, CT 06795
- Phone
- (844) 482-7285
- Enumerated
- Mar 23, 2007
- Record last updated
- Mar 11, 2025
- Fax
- (203) 502-2615
- Medicare enrollment
- Enrolled (PECOS I20080429000093); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest surgical physician assistant records → All 808 in Connecticut → Look up another NPI →
Also registered at 595 Straits Tpke
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Spencer Deros, PA-CSurgical Physician Assistant1841915394
Verify Ann-Marie Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Connecticut board licenses this profession
Search for license 002034Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average surgical physician assistant in 2024
32 Medicare Part D claims for 14 beneficiaries, against an average of 304 among the 10,174 providers of this specialty who prescribed in Part D. Brand-name drugs were 34% of 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 100 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).
Bills Medicare through one group practice
- Southern Connecticut Vascular Center LLCStratford, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ann-Marie Williams among 808 surgical physician assistant records in Connecticut
Ann-Marie Williams, PA-C is one of 808 surgical physician assistant records with a practice address in Connecticut. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 18% of them.
- NPI issued2007 · 18% of these records are older, 74% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 80% of these records are
- Graduated2004 · median 2016 among the 646 with a school on file
- Record last updated2025 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AS0400X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgical Physician Assistant providers in Connecticut
There are 808 surgical physician assistant records in Connecticut.
All 808 in Connecticut → Every provider in Watertown → Surgical Physician Assistant nationwide →
The 8 surgical physician assistant records with the nearest ZIP codes
- Spencer Deros, PA-CWatertown, CT 067951841915394
- Myah Bartolotta, PATorrington, CT 067901801586813
- Kristen Darson, P.A.Torrington, CT 067901609147826
- Elizabeth Haylette, MS, PA-CTorrington, CT 067901700340411
- Charles Heaton, PA-CTorrington, CT 067901386400745
- Vincent Miccoli, PATorrington, CT 067901811949571
- Kimberly Sweezy, PATorrington, CT 067901497086854
- Kurt Dubay, PABrookfield, CT 068041629544564
Common questions
What is Ann-Marie Williams, PA-C's NPI number?
Ann-Marie Williams, PA-C's National Provider Identifier (NPI) is 1164549341, issued on Mar 23, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Ann-Marie Williams, PA-C located?
The NPPES record lists a practice address at 595 Straits Tpke, Watertown, CT, 06795. Phone: (844) 482-7285. Providers update this record themselves, so call before visiting.
How can I verify Ann-Marie Williams, PA-C's license?
NPPES lists Connecticut license number 002034, as entered by the provider. Search the Connecticut board that licenses this profession; the NPPES record confirms identity only.
How much does Ann-Marie Williams, PA-C prescribe under Medicare Part D?
In 2024, Ann-Marie Williams, PA-C had 32 Medicare Part D claims for 14 beneficiaries; the average among surgical physician assistant prescribers was 304. Part D covers Medicare prescriptions only.
What is Ann-Marie Williams, PA-C's MIPS final score?
The 2023 MIPS final score is 100 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.