Donna M. Windish, MD
Internal Medicine Physician · Waterbury, CT
Donna M. Windish, MD is an internal medicine physician with a practice address in Waterbury, Connecticut, and NPI 1578537114, issued on Feb 13, 2006. Check the license (Connecticut 043389, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Donna M. Windish
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 043389 CT
Self-reported in NPPES; status is on the state search - Practice location
- 140 Grandview Ave, Waterbury, CT 06708
- Phone
- (203) 574-7284
- Enumerated
- Feb 13, 2006
- Record last updated
- Jul 13, 2026
- Fax
- (203) 573-7031
- Medicaid ID
- 001433896 CT
- Medicare enrollment
- Enrolled (PECOS I20050803000547); accepts Medicare assignment
- Medical or professional school
- University Of Connecticut School Of Medicine, 1999
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,623 in Connecticut → Look up another NPI →
Also registered at 140 Grandview Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Donna M. Windish in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 043389Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average internal medicine physician in 2024
280 Medicare Part D claims for 43 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Levothyroxine Sodium13 claims
- Tamsulosin Hcl13 claims
- Atorvastatin Calcium12 claims
- Furosemide12 claims
- Losartan Potassium12 claims
- Rosuvastatin Calcium12 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): 73.6 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 2 group practices
- Cornell Scott Hill Health CorporationNew Haven, CT
- Yale UniversityNew Haven, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Donna M. Windish among 2,623 internal medicine physician records in Connecticut
Donna M. Windish, MD 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 2006, is newer than 11% of them.
- NPI issued2006 · 11% of these records are older, 52% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1999 · median 2004 among the 1,646 with a school on file
- Record last updated2026 · 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).
119 internal medicine physician records list a practice address in Waterbury
They are 119 of the 3,148 NPPES records with a practice address in Waterbury, and 2,623 internal medicine physician records in Connecticut.
All 2,623 in Connecticut → Every provider in Waterbury → Internal Medicine Physician nationwide →
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Common questions
What is Donna M. Windish, MD's NPI number?
Donna M. Windish, MD's National Provider Identifier (NPI) is 1578537114, issued on Feb 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Donna M. Windish, MD located?
The NPPES record lists a practice address at 140 Grandview Ave, Waterbury, CT, 06708. Phone: (203) 574-7284. Providers update this record themselves, so call before visiting.
How can I verify Donna M. Windish, MD's license?
NPPES lists Connecticut license number 043389, 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 Donna M. Windish, MD prescribe under Medicare Part D?
In 2024, Donna M. Windish, MD had 280 Medicare Part D claims for 43 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Donna M. Windish, MD's MIPS final score?
The 2023 MIPS final score is 73.6 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.