NPPES file of Aug 9, 2026

Sean Timothy Brennan, PA-C

Surgical Physician Assistant · Windsor, CT

Sean Timothy Brennan, PA-C is a surgical physician assistant with a practice address in Windsor, Connecticut, and NPI 1255342556, issued on Aug 11, 2006. Check the license (Connecticut 000964, as entered in NPPES) with the Connecticut board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1255342556
Name
Sean Timothy Brennan
Credential
PA-C
Primary taxonomy
Surgical Physician Assistant 363AS0400X
License number
000964 CT
Self-reported in NPPES; status is on the state search
Practice location
360 Bloomfield Ave, Windsor, CT 06095
Phone
(860) 688-1311
Enumerated
Aug 11, 2006
Record last updated
Mar 11, 2009 (not updated in 17 years: call before relying on the address or phone)
Fax
(860) 687-1319
Medicare enrollment
Enrolled (PECOS I20050919000155); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 360 Bloomfield Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Kaylin AbateBehavior Technician1760343255
  2. Jaychelle AlvaradoBehavior Technician1891585956
  3. Karleisha BaronetteBehavior Analyst1013652437
  4. Victoria BrooksBehavior Technician1396691333
  5. Lynn CappaBehavior Technician1174481048
  6. Matthew ClarkProfessional Counselor1417353996

Verify Sean Timothy Brennan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Connecticut board licenses this profession
    Search for license 000964
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Connecticut license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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1% fewer Medicare Part D claims than the average surgical physician assistant in 2024

301 Medicare Part D claims for 143 beneficiaries, against an average of 304 among the 10,174 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims. 113 claims were for opioids.

  1. Sean Brennan301
  2. Specialty average304

Most prescribed

  1. Oxycodone Hcl50 claims
  2. Gabapentin38 claims
  3. Methocarbamol36 claims
  4. Tizanidine Hcl32 claims
  5. Tramadol Hcl29 claims
  6. Acetaminophen-Codeine19 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): 84.5 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.

  1. Qualityout of 100 · 30% of the final score79.3
  2. Costout of 100 · 30%59.6
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Bills Medicare through one group practice

  1. Hartford Healthcare Medical Group Specialists PLLCStorrs, CT

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Surgical Physician Assistant providers in Connecticut

There are 808 surgical physician assistant records in Connecticut.

Other surgical physician assistant records in Connecticut

  1. Samantha Abraham, PA-CNew Britain, CT1922580984
  2. Peter Ackerman, PA-C, ATC, CSCSDanbury, CT1487614160
  3. Allison Adajian, PA-CHartford, CT1619129582
  4. Katherine Adams, PA-CFarmington, CT1891666426
  5. Sarah Adams, PA-CWaterbury, CT1477748341
  6. Aasiya Ahmed, PA-CNorwich, CT1497574545
  7. Richard Ahrens, PA-CVernon, CT1417389735
  8. Joshua Alge, PA-CHartford, CT1184134702
  9. Lindsay Alger, PA-CHartford, CT1093207037
  10. Ali AlkabasiFarmington, CT1669145629

Common questions

What is Sean Timothy Brennan, PA-C's NPI number?

Sean Timothy Brennan, PA-C's National Provider Identifier (NPI) is 1255342556, issued on Aug 11, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Sean Timothy Brennan, PA-C located?

The NPPES record lists a practice address at 360 Bloomfield Ave, Windsor, CT, 06095. Phone: (860) 688-1311. Providers update this record themselves, so call before visiting.

How can I verify Sean Timothy Brennan, PA-C's license?

NPPES lists Connecticut license number 000964, as entered by the provider. Search the Connecticut board that licenses this profession; the NPPES record confirms identity only.

How much does Sean Timothy Brennan, PA-C prescribe under Medicare Part D?

In 2024, Sean Timothy Brennan, PA-C had 301 Medicare Part D claims for 143 beneficiaries; the average among surgical physician assistant prescribers was 304. Part D covers Medicare prescriptions only.

What is Sean Timothy Brennan, PA-C's MIPS final score?

The 2023 MIPS final score is 84.5 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.