NPPES file of Aug 9, 2026

Kassondra Mellen, PHYSICIAN ASSISTANT

Physician Assistant · Mesa, AZ

Kassondra Mellen, PHYSICIAN ASSISTANT is a physician assistant with a practice address in Mesa, Arizona, and NPI 1245418839, issued on Feb 5, 2008. Check the license (Arizona 3773, 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
1245418839
Name
Kassondra Mellen
Credential
PHYSICIAN ASSISTANT
Primary taxonomy
Physician Assistant 363A00000X
License number
3773 AZ
Self-reported in NPPES; status is on the state search
Practice location
1432 S Dobson RD Ste 301, Mesa, AZ 85202
Phone
(480) 464-9400
Enumerated
Feb 5, 2008
Record last updated
Jul 31, 2023
Medicare enrollment
Enrolled (PECOS I20080327000041); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
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 1432 S Dobson RD Ste 301

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

  1. Alejandra Berardinelli, PNP-PCPediatric Nurse Practitioner1093452427
  2. Mimi Chao, M.D.Plastic Surgery Physician1609091602
  3. Heidi Cox, MDPediatric Surgery Physician1801822168
  4. Kristina Gaetano, PA-CPhysician Assistant1538469127
  5. Nicole Hayes, PA-CPhysician Assistant1700214897
  6. Lindsay Ruder, PA-CSurgical Physician Assistant1851608418

Verify Kassondra Mellen 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 3773
    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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14.0 times the Medicare Part D claims of the average physician assistant in 2024

11,639 Medicare Part D claims for 396 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 241 claims were for opioids.

  1. Kassondra Mellen11,639
  2. Specialty average830

Most prescribed

  1. Levothyroxine Sodium629 claims
  2. Atorvastatin Calcium535 claims
  3. Potassium Chloride435 claims
  4. Eliquis361 claims
  5. Lisinopril332 claims
  6. Trazodone Hcl322 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): 78.8 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 score74.8
  2. Costout of 100 · 30%62.8
  3. Promoting interoperabilityout of 100 · 25%69.0
  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).

Bills Medicare through 2 group practices

  1. Atlas Medical Aco LLCMesa, AZ
  2. Century Care IncMesa, AZ

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

Kassondra Mellen among 3,666 physician assistant records in Arizona

Kassondra Mellen, PHYSICIAN ASSISTANT 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 2008, is newer than 21% of them.

  • NPI issued2008 · 21% of these records are older, 76% newer
  • In a Medicare fileYes · 77% of these records are
  • In the CMS Doctors and Clinicians fileYes · 60% of these records are
  • Graduated2007 · median 2018 among the 2,207 with a school on file
  • Record last updated2023 · 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. John Nelson, P.A.-CMesa, AZ 852021992799662

Common questions

What is Kassondra Mellen, PHYSICIAN ASSISTANT's NPI number?

Kassondra Mellen, PHYSICIAN ASSISTANT's National Provider Identifier (NPI) is 1245418839, issued on Feb 5, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Kassondra Mellen, PHYSICIAN ASSISTANT located?

The NPPES record lists a practice address at 1432 S Dobson RD Ste 301, Mesa, AZ, 85202. Phone: (480) 464-9400. Providers update this record themselves, so call before visiting.

How can I verify Kassondra Mellen, PHYSICIAN ASSISTANT's license?

NPPES lists Arizona license number 3773, as entered by the provider. Search the Arizona board that licenses this profession; the NPPES record confirms identity only.

How much does Kassondra Mellen, PHYSICIAN ASSISTANT prescribe under Medicare Part D?

In 2024, Kassondra Mellen, PHYSICIAN ASSISTANT had 11,639 Medicare Part D claims for 396 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.

What is Kassondra Mellen, PHYSICIAN ASSISTANT's MIPS final score?

The 2023 MIPS final score is 78.8 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.