NPPES file of Aug 9, 2026

Alexander I. Troster, PHD

Clinical Psychologist · Phoenix, AZ

Alexander I. Troster, PHD is a clinical psychologist with a practice address in Phoenix, Arizona, and NPI 1760554034, issued on Nov 14, 2006. Check the license (Arizona 4253, 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 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1760554034
Name
Alexander I. Troster
Credential
PHD
Primary taxonomy
Clinical Psychologist 103TC0700X
License numbers
4253 AZ
2949 NC
Self-reported in NPPES; status is on the state search
Practice location
222 W Thomas RD Ste 315, Phoenix, AZ 85013
Phone
(602) 406-3671
Enumerated
Nov 14, 2006
Record last updated
Sep 19, 2018 (not updated in 8 years: call before relying on the address or phone)
Fax
(602) 406-6115
Medicare enrollment
Enrolled (PECOS I20120302000303); 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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8 nearest clinical psychologist records → All 841 in Arizona → Look up another NPI →

Also registered at 222 W Thomas RD Ste 315

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

  1. Monica Acevedo Molina, PHDClinical Psychologist1659263945
  2. Elsa BaenaClinical Neuropsychologist1891344982
  3. Danielle Eagan, PH.D.Clinical Neuropsychologist1467985408
  4. Karine Hageboutros, PSYDClinical Psychologist1992378038
  5. Gregory Lee, PHDClinical Neuropsychologist1063521326
  6. William McCuddy, PHDClinical Psychologist1982294997

Verify Alexander I. Troster 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 4253    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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Bills Medicare through one group practice

  1. Sjhmc Physician ServicesPhoenix, AZ

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

Alexander I. Troster among 841 clinical psychologist records in Arizona

Alexander I. Troster, PHD is one of 841 clinical psychologist records with a practice address in Arizona. 14% 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 3% of them.

  • NPI issued2006 · 3% of these records are older, 74% newer
  • In a Medicare fileYes · 14% of these records are
  • In the CMS Doctors and Clinicians fileYes · 24% of these records are
  • Graduated1991 · median 2007 among the 200 with a school on file
  • Record last updated2018 · 61% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103TC0700X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Clinical Psychologist providers in Arizona

There are 841 clinical psychologist records in Arizona.

All 841 in Arizona → Every provider in Phoenix → Clinical Psychologist nationwide →

The 8 clinical psychologist records with the nearest ZIP codes

  1. Marya Cota, PH.DPhoenix, AZ 850131174690275
  2. Anna Dakessian-Titus, PHDPhoenix, AZ 850131760876320
  3. Janeen Demarte, PH.D.Phoenix, AZ 850131245543487
  4. Tasha Haggar, PSY.D.Phoenix, AZ 850131629514435
  5. Lori Holleran, PHDPhoenix, AZ 850131669018933
  6. James Holmes, PSY.D.Phoenix, AZ 850131205369519
  7. William McCuddy, PHDPhoenix, AZ 850131982294997
  8. Tricia Merkley, PHDPhoenix, AZ 850131275944308

Common questions

What is Alexander I. Troster, PHD's NPI number?

Alexander I. Troster, PHD's National Provider Identifier (NPI) is 1760554034, issued on Nov 14, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Alexander I. Troster, PHD located?

The NPPES record lists a practice address at 222 W Thomas RD Ste 315, Phoenix, AZ, 85013. Phone: (602) 406-3671. Providers update this record themselves, so call before visiting.

How can I verify Alexander I. Troster, PHD's license?

NPPES lists Arizona license number 4253, as entered by the provider. Search the Arizona board that licenses this profession; the NPPES record confirms identity only.

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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.