Vin Sivan Pillai, M.D.
Internal Medicine Physician · West Haven, CT
Vin Sivan Pillai, M.D. is an internal medicine physician with a practice address in West Haven, Connecticut, and NPI 1609239623, issued on Mar 29, 2016. Check the license (Connecticut 64806, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Vin Sivan Pillai
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 64806 CT
Self-reported in NPPES; status is on the state search - Practice location
- 1 Cellini PL Ste 102, West Haven, CT 06516
- Phone
- (203) 932-6481
- Enumerated
- Mar 29, 2016
- Record last updated
- Mar 5, 2025
- Fax
- (203) 932-4051
- Medicare enrollment
- Enrolled (PECOS I20200303000720); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,623 in Connecticut → Look up another NPI →
Also registered at 1 Cellini PL Ste 102
A shared address usually means a shared clinic or building; it does not show who employs whom.
- David Allyn, PA-CPhysician Assistant1912321803
- Allison Altenburger, APRN, NP-CAdult Health Nurse Practitioner1033503230
- Evan Angelus, MDInternal Medicine Physician1538788609
- Michael Ascenzia, P.A.-CMedical Physician Assistant1932351673
- Annie AugustinePrimary Care Nurse Practitioner1992548259
- Horatiu Balas, M.D.Internal Medicine Physician1720084320
Verify Vin Sivan Pillai in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 64806Check 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 internal medicine physician in 2024
344 Medicare Part D claims for 193 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 Besylate31 claims
- Atorvastatin Calcium26 claims
- Levothyroxine Sodium18 claims
- Azithromycin16 claims
- Prednisone12 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.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 3 group practices
- Hartford Healthcare Medical Group Specialists PLLCNorwalk, CT
- Hhc Physician Services PLLCWest Haven, CT
- The Charlotte Hungerford HospitalTorrington, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Vin Sivan Pillai among 2,623 internal medicine physician records in Connecticut
Vin Sivan Pillai, M.D. is one of 2,623 internal medicine physician records with a practice address in Connecticut. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 77% of them.
- NPI issued2016 · 77% of these records are older, 20% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2008 · median 2004 among the 1,646 with a school on file
- Record last updated2025 · 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 Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
84 internal medicine physician records list a practice address in West Haven
They are 84 of the 1,356 NPPES records with a practice address in West Haven, and 2,623 internal medicine physician records in Connecticut.
All 2,623 in Connecticut → Every provider in West Haven → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Horatiu Balas, M.D.West Haven, CT 065161720084320
- Christine Cheng, MDWest Haven, CT 065161598753980
- Mark Drabinski, M.D.West Haven, CT 065161811992902
- Benedict Fernando, M.D.West Haven, CT 065161932105624
- Glen Gechlik, MDWest Haven, CT 065161710972393
- Jurgen Holleck, M.D.West Haven, CT 065161811964257
- Avlin Imaeda, MDWest Haven, CT 065161851375612
- Laurence Knoll, MDWest Haven, CT 065161003886649
Common questions
What is Vin Sivan Pillai, M.D.'s NPI number?
Vin Sivan Pillai, M.D.'s National Provider Identifier (NPI) is 1609239623, issued on Mar 29, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Vin Sivan Pillai, M.D. located?
The NPPES record lists a practice address at 1 Cellini PL Ste 102, West Haven, CT, 06516. Phone: (203) 932-6481. Providers update this record themselves, so call before visiting.
How can I verify Vin Sivan Pillai, M.D.'s license?
NPPES lists Connecticut license number 64806, 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 Vin Sivan Pillai, M.D. prescribe under Medicare Part D?
In 2024, Vin Sivan Pillai, M.D. had 344 Medicare Part D claims for 193 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Vin Sivan Pillai, M.D.'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.