NPPES file of Aug 9, 2026

Allison Sadowski, MD

Neonatal-Perinatal Medicine Physician · Hartford, CT

Allison Sadowski, MD is a neonatal-perinatal medicine physician with a practice address in Hartford, Connecticut, and NPI 1396241923, issued on Apr 3, 2018. Check the license (Connecticut 69117, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1396241923
Name
Allison Sadowski
Credential
MD
Primary taxonomy
Neonatal-Perinatal Medicine Physician 2080N0001X
License number
69117 CT
Self-reported in NPPES; status is on the state search
Practice location
282 Washington St, Hartford, CT 06106
Phone
(860) 545-9000
Enumerated
Apr 3, 2018
Record last updated
Jul 9, 2024
Medicare enrollment
Enrolled (PECOS I20240529001814); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
Download card Updates feed

Also registered at 282 Washington St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Barbara AdamsPediatric Nurse Practitioner1962663583
  2. Ariana Adamski-Larson, MDStudent in an Organized Health Care Education/Training Program1518655083
  3. Taylor Aglio, M.D.Pediatric Hematology & Oncology Physician1285015453
  4. Sabina Ahmad, M.D.Pediatric Pulmonology Physician1134476658
  5. Neveen Al-Said, DOPediatrics Physician1851978548
  6. Paula Algranati, MDPediatrics Physician1467424317

Verify Allison Sadowski in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersConnecticut Medical Examining Board
    Search for license 69117
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Connecticut license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Is this page about you? You can ask us to correct, restrict or remove it: how.

Bills Medicare through one group practice

  1. Connecticut Children's Specialty Group, IncHartford, CT

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Allison Sadowski among 108 neonatal-perinatal medicine physician records in Connecticut

Allison Sadowski, MD is one of 108 neonatal-perinatal medicine physician records with a practice address in Connecticut. 13% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 88% of them.

  • NPI issued2018 · 88% of these records are older, 6% newer
  • In a Medicare fileYes · 13% of these records are
  • In the CMS Doctors and Clinicians fileYes · 7% of these records are
  • Record last updated2024 · 44% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2080N0001X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Neonatal-Perinatal Medicine Physician providers in Connecticut

There are 108 neonatal-perinatal medicine physician records in Connecticut.

The 8 neonatal-perinatal medicine physician records with the nearest ZIP codes

  1. Arvin Bundhoo, MDHartford, CT 061061497985733
  2. Jean Chelala, MDHartford, CT 061061285660852
  3. Denise Clark, M.D.Hartford, CT 061061891760633
  4. Donnamaria Cortezzo, M.D.Hartford, CT 061061366609257
  5. Leonard Eisenfeld, MDHartford, CT 061061649243379
  6. James Hagadorn, MDHartford, CT 061061003880311
  7. Victor Herson, MDHartford, CT 061061801860432
  8. Isabella Knox, MDHartford, CT 061061912971532

Common questions

What is Allison Sadowski, MD's NPI number?

Allison Sadowski, MD's National Provider Identifier (NPI) is 1396241923, issued on Apr 3, 2018. An NPI identifies a provider in billing; it is not a license.

Where is Allison Sadowski, MD located?

The NPPES record lists a practice address at 282 Washington St, Hartford, CT, 06106. Phone: (860) 545-9000. Providers update this record themselves, so call before visiting.

How can I verify Allison Sadowski, MD's license?

NPPES lists Connecticut license number 69117, 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.

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.