Irina G. Rosewater, M.D.
Endocrinology, Diabetes & Metabolism Physician · New Haven, CT
Irina G. Rosewater, M.D. is an endocrinology, diabetes & metabolism physician with a practice address in New Haven, Connecticut, and NPI 1477793529, issued on Mar 3, 2009. Check the license (Connecticut 044226, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Irina G. Rosewater
- Credential
- M.D.
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- 044226 CT
Self-reported in NPPES; status is on the state search - Practice location
- 200 Orchard St, New Haven, CT 06511
- Phone
- (203) 776-4444
- Enumerated
- Mar 3, 2009
- Record last updated
- Nov 16, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (203) 776-4441
- Medicare enrollment
- Enrolled (PECOS I20090730000310); accepts Medicare assignment
- Medical or professional school
- Jefferson Medical College Of Thomas Jefferson University, 2002
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 214 in Connecticut → Look up another NPI →
Also registered at 200 Orchard St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Eric Fan, M.D.Internal Medicine Physician1114966561
- Surani Fernando, MDEndocrinology, Diabetes & Metabolism Physician1750355137
Verify Irina G. Rosewater in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 044226Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.5 times the Medicare Part D claims of the average endocrinology, diabetes & metabolism physician in 2024
6,468 Medicare Part D claims for 886 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 42% of claims.
Most prescribed
- Levothyroxine Sodium710 claims
- Metformin Hcl Er363 claims
- Jardiance357 claims
- Ozempic351 claims
- Alendronate Sodium349 claims
- Glimepiride227 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 MIPS final score for 2023 (Medicare payment program): 94.2 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $623.18
34 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. The 5,661 providers of this specialty with any payment received $5,742.15 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 one group practice
- Endocrine Assoc OF CT LLCHamden, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Irina G. Rosewater among 214 endocrinology, diabetes & metabolism physician records in Connecticut
Irina G. Rosewater, M.D. is one of 214 endocrinology, diabetes & metabolism physician records with a practice address in Connecticut. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 60% of them.
- NPI issued2009 · 60% of these records are older, 36% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2002 · median 2004 among the 145 with a school on file
- Record last updated2009 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in Connecticut
There are 214 endocrinology, diabetes & metabolism physician records in Connecticut.
All 214 in Connecticut → Every provider in New Haven → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Leigh Berrien, APRNNew Haven, CT 065111134998230
- Surani Fernando, MDNew Haven, CT 065111750355137
- Robert Gelfand, M.D.New Haven, CT 065111952338147
- Philip Goldberg, MDNew Haven, CT 065111659417889
- Richard Kibbey, MDNew Haven, CT 065111598704272
- Adam Mayerson, M.D.New Haven, CT 065111457451015
- Olga Sakharova, MDNew Haven, CT 065111528092590
- Kai Yang, MDNew Haven, CT 065111093851321
Common questions
What is Irina G. Rosewater, M.D.'s NPI number?
Irina G. Rosewater, M.D.'s National Provider Identifier (NPI) is 1477793529, issued on Mar 3, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Irina G. Rosewater, M.D. located?
The NPPES record lists a practice address at 200 Orchard St, New Haven, CT, 06511. Phone: (203) 776-4444. Providers update this record themselves, so call before visiting.
How can I verify Irina G. Rosewater, M.D.'s license?
NPPES lists Connecticut license number 044226, 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 Irina G. Rosewater, M.D. prescribe under Medicare Part D?
In 2024, Irina G. Rosewater, M.D. had 6,468 Medicare Part D claims for 886 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. Part D covers Medicare prescriptions only.
What is Irina G. Rosewater, M.D.'s MIPS final score?
The 2023 MIPS final score is 94.2 of 100. 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.