NPPES file of Aug 9, 2026

Katarzyna Mosio, PA-C

Physician Assistant · Mesa, AZ

Katarzyna Mosio, PA-C is a physician assistant with a practice address in Mesa, Arizona, and NPI 1932841947, issued on Apr 11, 2022. Check the license (Arizona 9391, as entered in NPPES) with the Arizona 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 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1932841947
Name
Katarzyna Mosio
Credential
PA-C
Primary taxonomy
Physician Assistant 363A00000X
License numbers
9391 AZ
PA8791 MA
Self-reported in NPPES; status is on the state search
Practice location
1500 S Dobson RD Ste 202, Mesa, AZ 85202
Phone
(669) 742-6738
Enumerated
Apr 11, 2022
Record last updated
Apr 11, 2024
Fax
(866) 939-2673
Medicare enrollment
Enrolled (PECOS I20250110002321); 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 1500 S Dobson RD Ste 202

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

  1. Alicia Aldana, PA-CPhysician Assistant1780271270
  2. Melissa Barrett, PA-CPhysician Assistant1114257342
  3. Lucy BowersPhysician Assistant1942092945
  4. Kyla Chavez, PA-CPhysician Assistant1154299014
  5. Nirain D'Souza, M.D.Orthopaedic Surgery Physician1295736106
  6. Amalia De Comas, MDOrthopaedic Surgery Physician1063603843

Verify Katarzyna Mosio in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Arizona board licenses this profession
    Search for license 9391
    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 Arizona 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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93% fewer Medicare Part D claims than the average physician assistant in 2024

58 Medicare Part D claims for 40 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 32 claims were for opioids.

  1. Katarzyna Mosio58
  2. Specialty average830

Most prescribed

  1. Oxycodone Hcl23 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): 82.5 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 score73.1
  2. Costout of 100 · 30%68.5
  3. Promoting interoperabilityout of 100 · 25%100.0
  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).

Industry payments in 2024: $209.43

3 payments; by number, the most common kind was food and beverage; the largest payer was Globus Medical, Inc. The 64,719 providers of this specialty with any payment received $841.65 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Katarzyna Mosio$209.43
  2. Specialty average$841.65

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

  1. Orthopedic Surgery, IncStoneham, MA

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

Katarzyna Mosio among 3,666 physician assistant records in Arizona

Katarzyna Mosio, PA-C is one of 3,666 physician assistant records with a practice address in Arizona. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 70% of them.

  • NPI issued2022 · 70% of these records are older, 23% newer
  • In a Medicare fileYes · 77% of these records are
  • In the CMS Doctors and Clinicians fileYes · 60% of these records are
  • Graduated2022 · median 2018 among the 2,207 with a school on file
  • Record last updated2024 · 35% 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 Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

472 physician assistant records list a practice address in Mesa

They are 472 of the 9,151 NPPES records with a practice address in Mesa, and 3,666 physician assistant records in Arizona.

The 8 physician assistant records with the nearest ZIP codes

  1. Melissa Barrett, PA-CMesa, AZ 852021114257342
  2. Debra Brown, PA-CMesa, AZ 852021114274669
  3. Kristina Gaetano, PA-CMesa, AZ 852021538469127
  4. Melissa Galletta, PACMesa, AZ 852021508841248
  5. Janelle Hoppes, PA-CMesa, AZ 852021447274345
  6. Carol Leneway, PA-CMesa, AZ 852021205999117
  7. Renee Little, PAMesa, AZ 852021205806122
  8. Kassondra Mellen, PHYSICIAN ASSISTANTMesa, AZ 852021245418839

Common questions

What is Katarzyna Mosio, PA-C's NPI number?

Katarzyna Mosio, PA-C's National Provider Identifier (NPI) is 1932841947, issued on Apr 11, 2022. An NPI identifies a provider in billing; it is not a license.

Where is Katarzyna Mosio, PA-C located?

The NPPES record lists a practice address at 1500 S Dobson RD Ste 202, Mesa, AZ, 85202. Phone: (669) 742-6738. Providers update this record themselves, so call before visiting.

How can I verify Katarzyna Mosio, PA-C's license?

NPPES lists Arizona license number 9391, as entered by the provider. Search the Arizona board that licenses this profession; the NPPES record confirms identity only.

How much does Katarzyna Mosio, PA-C prescribe under Medicare Part D?

In 2024, Katarzyna Mosio, PA-C had 58 Medicare Part D claims for 40 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.

What is Katarzyna Mosio, PA-C's MIPS final score?

The 2023 MIPS final score is 82.5 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.