NPPES file of Aug 9, 2026

Chadwick Haarer, M.D.

Anatomic Pathology & Clinical Pathology Physician · Sun City, AZ

Chadwick Haarer, M.D. is an anatomic pathology & clinical pathology physician with a practice address in Sun City, Arizona, and NPI 1336321306, issued on Dec 3, 2007. Check the license (Arizona 37809, as entered in NPPES) on the Arizona Medical Board; 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
1336321306
Name
Chadwick Haarer
Credential
M.D.
Primary taxonomy
Anatomic Pathology & Clinical Pathology Physician 207ZP0102X
License number
37809 AZ
Self-reported in NPPES; status is on the state search
Practice location
10401 W Thunderbird Blvd, Sun City, AZ 85351
Phone
(602) 685-5211
Enumerated
Dec 3, 2007
Record last updated
Aug 5, 2020 (not updated in 6 years: call before relying on the address or phone)
Fax
(602) 685-5325
Medicaid ID
325509 AZ
Medicare enrollment
Enrolled (PECOS I20081015000292); accepts Medicare assignment
Medical or professional school
New York Medical College, 2001
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 10401 W Thunderbird Blvd

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

  1. Ahmed AdenCertified Registered Nurse Anesthetist1477343424
  2. Maria Aguirre, M.D.Anatomic Pathology & Clinical Pathology Physician1669447645
  3. Raniah Al-Tamsheh, M.DHospitalist Physician1750328829
  4. Kimberly Albright, PHARMDPharmacist1154183515
  5. Ellie Alevritis, MDHospitalist Physician1073573267
  6. Jozie AshlesonPhysician Assistant1457167157

Verify Chadwick Haarer in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersArizona Medical Board
    Search for license 37809
    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 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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The practice group's MIPS final score for 2023 (Medicare payment program): 88.6 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 score86.5
  2. Costnot scored (reweighted)
  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 2 group practices

  1. Pathology Specialist OF Arizona, LLPSun City, AZ
  2. St Josephs PathologyPhoenix, AZ

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

Chadwick Haarer among 324 anatomic pathology & clinical pathology physician records in Arizona

Chadwick Haarer, M.D. is one of 324 anatomic pathology & clinical pathology physician records with a practice address in Arizona. 58% 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 46% of them.

  • NPI issued2007 · 46% of these records are older, 43% newer
  • In a Medicare fileYes · 58% of these records are
  • In the CMS Doctors and Clinicians fileYes · 49% of these records are
  • Graduated2001 · median 2001 among the 159 with a school on file
  • Record last updated2020 · 68% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZP0102X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

12 anatomic pathology & clinical pathology physician records list a practice address in Sun City

They are 12 of the 813 NPPES records with a practice address in Sun City, and 324 anatomic pathology & clinical pathology physician records in Arizona.

The 8 anatomic pathology & clinical pathology physician records with the nearest ZIP codes

  1. Maria Aguirre, M.D.Sun City, AZ 853511669447645
  2. Hashem Ayyad, M.D.Sun City, AZ 853511891075172
  3. Earle Collum, M.D.Sun City, AZ 853511639139264
  4. Adam Gomez, M.D.Sun City, AZ 853511710244744
  5. Lee McGhan, M.D.Sun City, AZ 853511003074063
  6. Melissa Myrsiades, MDSun City, AZ 853511609915693
  7. Steve Nguyen, MDSun City, AZ 853511881039394
  8. Jeffrey Oliver, M.D.Sun City, AZ 853511538134523

Common questions

What is Chadwick Haarer, M.D.'s NPI number?

Chadwick Haarer, M.D.'s National Provider Identifier (NPI) is 1336321306, issued on Dec 3, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Chadwick Haarer, M.D. located?

The NPPES record lists a practice address at 10401 W Thunderbird Blvd, Sun City, AZ, 85351. Phone: (602) 685-5211. Providers update this record themselves, so call before visiting.

How can I verify Chadwick Haarer, M.D.'s license?

NPPES lists Arizona license number 37809, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

What is Chadwick Haarer, M.D.'s MIPS final score?

The 2023 MIPS final score is 88.6 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.