Roslyn Chosak, M.D.
Gynecology Physician · New Haven, CT
Roslyn Chosak, M.D. is a gynecology physician with a practice address in New Haven, Connecticut, and NPI 1528023181, issued on Apr 18, 2006. Check the license (Connecticut 022991, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Roslyn Chosak
- Credential
- M.D.
- Primary taxonomy
- Gynecology Physician 207VG0400X
- License number
- 022991 CT
Self-reported in NPPES; status is on the state search - Practice location
- 2 Church St S, New Haven, CT 06519
- Phone
- (203) 562-5439
- Enumerated
- Apr 18, 2006
- Entity
- Type 1 · individual
Also registered at 2 Church St S
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Susan Boulware, MDPediatric Endocrinology Physician1124001946
- Keith Choate, M.D., PH.D.Dermatology Physician1609058080
- Andrea Dann, APRNPediatric Nurse Practitioner1477538684
- Susan Debarge, CNMAdvanced Practice Midwife1013944727
- Pamela Delerme, CNMAdvanced Practice Midwife1447295076
Verify Roslyn Chosak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 022991Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
92% more Medicare Part D claims than the average gynecology physician in 2024
614 Medicare Part D claims for 178 beneficiaries, against an average of 319 among the 1,929 providers of this specialty who prescribed in Part D.
Most prescribed
- Estradiol113 claims
- Premarin58 claims
- Estradiol (Twice Weekly)40 claims
- Progesterone38 claims
- Alendronate Sodium35 claims
- Nitrofurantoin Mono-Macro35 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.
Industry payments in 2024: $220.69
8 payments, mostly food and beverage; the largest payer was Astellas Pharma US Inc. The 1,393 providers of this specialty with any payment received $2,024.38 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.
Gynecology Physician providers in Connecticut
There are 74 gynecology physician records in Connecticut.
Other gynecology physician records in Connecticut
- Ramzi Alkass, MDFarmington, CT1992996078
- Ronald Archibold, M.D.Putnam, CT1144376336
- Timothy Barczak, MDNew London, CT1427032200
- Richard Bercik, MDNew Haven, CT1942298013
- Kenneth Blau, M.D.Danbury, CT1780694919
- Tracy Brennan, MDHartford, CT1093814857
- Rita Castillo, MDStamford, CT1467645754
- Effie Chang, MDNew Haven, CT1487668943
- Scott Chudnoff, MDStamford, CT1457431934
- Felice Colliton, MDHartford, CT1033212121
Common questions
What is Roslyn Chosak, M.D.'s NPI number?
Roslyn Chosak, M.D.'s National Provider Identifier (NPI) is 1528023181, issued on Apr 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Roslyn Chosak, M.D. located?
The NPPES record lists a practice address at 2 Church St S, New Haven, CT, 06519. Phone: (203) 562-5439. Providers update this record themselves, so call before visiting.
How can I verify Roslyn Chosak, M.D.'s license?
NPPES lists Connecticut license number 022991, 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 Roslyn Chosak, M.D. prescribe under Medicare Part D?
In 2024, Roslyn Chosak, M.D. had 614 Medicare Part D claims for 178 beneficiaries; the average among gynecology physician prescribers was 319. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.