NPPES file of Aug 9, 2026

Melissa A. Mieszczanski, PA-C

Physician Assistant · Derby, CT

Melissa A. Mieszczanski, PA-C is a physician assistant with a practice address in Derby, Connecticut, and NPI 1306939087, issued on Oct 2, 2006. Check the license (Connecticut 001829, as entered in NPPES) with the Connecticut board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1306939087
Name
Melissa A. Mieszczanski
Credential
PA-C
Primary taxonomy
Physician Assistant 363A00000X
License number
001829 CT
Self-reported in NPPES; status is on the state search
Practice location
130 Division St, Derby, CT 06418
Phone
(203) 732-7403
Enumerated
Oct 2, 2006
Record last updated
Aug 5, 2025
Medicare enrollment
Enrolled (PECOS I20061025000557); 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.
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Also registered at 130 Division St

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

  1. Mohammed Abbas, MDStudent in an Organized Health Care Education/Training Program1215687991
  2. Jenny Abdulkarim, MDStudent in an Organized Health Care Education/Training Program1033795729
  3. Ahmed AbdullahStudent in an Organized Health Care Education/Training Program1255034690
  4. Binta Abdullahi, MDStudent in an Organized Health Care Education/Training Program1942051057
  5. Nicholas Adams, NPNurse Practitioner1093599979
  6. Divya Aggarwal, MDStudent in an Organized Health Care Education/Training Program1154558401

Verify Melissa A. Mieszczanski in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Connecticut board licenses this profession
    Search for license 001829
    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
Find 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.

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The practice group's MIPS final score for 2023 (Medicare payment program): 82.2 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.

  1. Qualityout of 100 · 30% of the final score85.2
  2. Costout of 100 · 30%67.7
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Bills Medicare through one group practice

  1. Connecticut Orthopaedic Specialists PCOrange, CT

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

Melissa A. Mieszczanski among 2,047 physician assistant records in Connecticut

Melissa A. Mieszczanski, PA-C is one of 2,047 physician assistant records with a practice address in Connecticut. 78% 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 4% of them.

  • NPI issued2006 · 4% of these records are older, 82% newer
  • In a Medicare fileYes · 78% of these records are
  • In the CMS Doctors and Clinicians fileYes · 65% of these records are
  • Graduated2006 · median 2018 among the 1,338 with a school on file
  • Record last updated2025 · 42% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

20 physician assistant records list a practice address in Derby

They are 20 of the 453 NPPES records with a practice address in Derby, and 2,047 physician assistant records in Connecticut.

The 8 physician assistant records with the nearest ZIP codes

  1. Timothy Akojenu, PA-CDerby, CT 064181508149220
  2. Katherine Boxberger, PADerby, CT 064181427388461
  3. Natalie Coulis, PA-CDerby, CT 064181427006261
  4. Veronica Genovez, PA-CDerby, CT 064181396055000
  5. Jessica Gonzalez, PA-CDerby, CT 064181619367141
  6. Samantha Holzman, PA-CDerby, CT 064181336571165
  7. Linda Hricz-Borges, PA-CDerby, CT 064181528016755
  8. Tamara Kaliszewski, P.A..Derby, CT 064181316987621

Common questions

What is Melissa A. Mieszczanski, PA-C's NPI number?

Melissa A. Mieszczanski, PA-C's National Provider Identifier (NPI) is 1306939087, issued on Oct 2, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Melissa A. Mieszczanski, PA-C located?

The NPPES record lists a practice address at 130 Division St, Derby, CT, 06418. Phone: (203) 732-7403. Providers update this record themselves, so call before visiting.

How can I verify Melissa A. Mieszczanski, PA-C's license?

NPPES lists Connecticut license number 001829, as entered by the provider. Search the Connecticut board that licenses this profession; the NPPES record confirms identity only.

What is Melissa A. Mieszczanski, PA-C's MIPS final score?

The 2023 MIPS final score is 82.2 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.