Sergey Zasypayko, M.D
Internal Medicine Physician · Branford, CT
Sergey Zasypayko, M.D is an internal medicine physician with a practice address in Branford, Connecticut, and NPI 1992961775, issued on Jul 31, 2008. Check the license (Connecticut 048353, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Sergey Zasypayko
- Credential
- M.D
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 048353 CT
249366 NY
Self-reported in NPPES; status is on the state search - Practice location
- 14 Business Park Drive, Branford, CT 06405
- Phone
- (203) 643-0620
- Enumerated
- Jul 31, 2008
- Record last updated
- Jan 16, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (203) 643-0623
- Medicare enrollment
- Enrolled (PECOS I20081201000019); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,623 in Connecticut → Look up another NPI →
Verify Sergey Zasypayko in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 048353Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average internal medicine physician in 2024
500 Medicare Part D claims for 216 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Chlorhexidine Gluconate59 claims
- Fluticasone Propionate55 claims
- Clonazepam28 claims
- Eszopiclone26 claims
- Meloxicam19 claims
- Azithromycin15 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): 82.7 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: $307.66
10 payments; by number, the most common kind was food and beverage; the largest payer was Harmony Biosciences Llc. The 50,334 providers of this specialty with any payment received $1,303.06 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 3 group practices
- City Medical OF Upper East Side PLLCJamaica, NY
- Pulmonary Care, PCMilford, CT
- Southwest Suffolk Medical PCWest Islip, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sergey Zasypayko among 2,623 internal medicine physician records in Connecticut
Sergey Zasypayko, 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 2008, is newer than 56% of them.
- NPI issued2008 · 56% of these records are older, 40% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1997 · median 2004 among the 1,646 with a school on file
- Record last updated2013 · 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).
20 internal medicine physician records list a practice address in Branford
They are 20 of the 661 NPPES records with a practice address in Branford, and 2,623 internal medicine physician records in Connecticut.
All 2,623 in Connecticut → Every provider in Branford → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Antonio Daria, DOBranford, CT 064051447443676
- David Eilbott, MDBranford, CT 064051720094188
- Jon Fessel, MDBranford, CT 064051205843554
- Jaimy Honig, MDBranford, CT 064051518921857
- Mark Kasper, MDBranford, CT 064051780648238
- Richard Kaufman, MDBranford, CT 064051215991575
- Si-Hoi Lam, M.D.Branford, CT 064051477574929
- Denis Miller, MDBranford, CT 064051578570594
Common questions
What is Sergey Zasypayko, M.D's NPI number?
Sergey Zasypayko, M.D's National Provider Identifier (NPI) is 1992961775, issued on Jul 31, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Sergey Zasypayko, M.D located?
The NPPES record lists a practice address at 14 Business Park Drive, Branford, CT, 06405. Phone: (203) 643-0620. Providers update this record themselves, so call before visiting.
How can I verify Sergey Zasypayko, M.D's license?
NPPES lists Connecticut license number 048353, 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 Sergey Zasypayko, M.D prescribe under Medicare Part D?
In 2024, Sergey Zasypayko, M.D had 500 Medicare Part D claims for 216 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Sergey Zasypayko, M.D's MIPS final score?
The 2023 MIPS final score is 82.7 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.