Agata Jaskiewicz-Poznanska, M.D.
Family Medicine Physician · Southbury, CT
Agata Jaskiewicz-Poznanska, M.D. is a family medicine physician with a practice address in Southbury, Connecticut, and NPI 1114148558, issued on May 2, 2007. Check the license (Connecticut 049047, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Agata Jaskiewicz-Poznanska
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 049047 CT
Self-reported in NPPES; status is on the state search - Practice location
- 22 Old Waterbury RD, Southbury, CT 06488
- Phone
- (203) 262-4200
- Enumerated
- May 2, 2007
- Record last updated
- Apr 6, 2011 (not updated in 15 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20101104001670); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 958 in Connecticut → Look up another NPI →
Also registered at 22 Old Waterbury RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sandra Biolo, A.P.R.N.Adult Health Nurse Practitioner1700978426
- Robert Carr, M.D.Family Medicine Physician1538196795
- Linda Eglit, APRNGerontology Nurse Practitioner1306529797
- Heather Fleming, PTPhysical Therapist1972125540
- Virginia Hannon, A.P.R.N.Gerontology Nurse Practitioner1780776344
- Dileema KalansuriyaInternal Medicine Physician1972785608
Verify Agata Jaskiewicz-Poznanska in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 049047Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.9 times the Medicare Part D claims of the average family medicine physician in 2024
10,408 Medicare Part D claims for 976 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 122 claims were for opioids.
Most prescribed
- Amlodipine Besylate557 claims
- Rosuvastatin Calcium505 claims
- Atorvastatin Calcium445 claims
- Levothyroxine Sodium444 claims
- Lisinopril342 claims
- Losartan Potassium287 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).
Bills Medicare through one group practice
- Nuvance Health Medical Practice CT IncSouthbury, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Agata Jaskiewicz-Poznanska among 958 family medicine physician records in Connecticut
Agata Jaskiewicz-Poznanska, M.D. is one of 958 family medicine physician records with a practice address in Connecticut. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 43% of them.
- NPI issued2007 · 43% of these records are older, 48% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1995 · median 2009 among the 611 with a school on file
- Record last updated2011 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
7 family medicine physician records list a practice address in Southbury
They are 7 of the 520 NPPES records with a practice address in Southbury, and 958 family medicine physician records in Connecticut.
All 958 in Connecticut → Every provider in Southbury → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Marianne Bette, MD EAAFPSouthbury, CT 064881144266495
- Robert Carr, M.D.Southbury, CT 064881538196795
- Gregory Decandia, MDSouthbury, CT 064881003890641
- Raafat Gorgy, DOSouthbury, CT 064881700137734
- Andrew Rubman, N.D.Southbury, CT 064881538280128
- Kornelia Thomas, MDSouthbury, CT 064881134500051
- Timothy Chapados, DOSouthington, CT 064891295112761
- Jessica Mason, DOSouthington, CT 064891134619414
Common questions
What is Agata Jaskiewicz-Poznanska, M.D.'s NPI number?
Agata Jaskiewicz-Poznanska, M.D.'s National Provider Identifier (NPI) is 1114148558, issued on May 2, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Agata Jaskiewicz-Poznanska, M.D. located?
The NPPES record lists a practice address at 22 Old Waterbury RD, Southbury, CT, 06488. Phone: (203) 262-4200. Providers update this record themselves, so call before visiting.
How can I verify Agata Jaskiewicz-Poznanska, M.D.'s license?
NPPES lists Connecticut license number 049047, 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 Agata Jaskiewicz-Poznanska, M.D. prescribe under Medicare Part D?
In 2024, Agata Jaskiewicz-Poznanska, M.D. had 10,408 Medicare Part D claims for 976 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Agata Jaskiewicz-Poznanska, 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.