NPPES file of Aug 9, 2026

Helen Bonnie Trop-Zell, MD

Specialist · Scottsdale, AZ

Helen Bonnie Trop-Zell, MD is a specialist with a practice address in Scottsdale, Arizona, and NPI 1346237930, issued on Sep 29, 2005. Check the license (Arizona AZ23273, 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 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1346237930
Name
Helen Bonnie Trop-Zell
Credential
MD
Primary taxonomy
Specialist 174400000X
License number
AZ23273 AZ
Self-reported in NPPES; status is on the state search
Practice location
9953 N 95TH St, Scottsdale, AZ 85258
Phone
(480) 945-8360
Enumerated
Sep 29, 2005
Record last updated
Aug 29, 2013 (not updated in 13 years: call before relying on the address or phone)
Fax
(480) 945-4555
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 9953 N 95TH St

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

  1. Madonna Mallari, MDInternal Medicine Physician1164402285

Verify Helen Bonnie Trop-Zell 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 AZ23273
    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
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97% fewer Medicare Part D claims than the average specialist in 2024

38 Medicare Part D claims for 12 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D.

  1. Helen Trop-Zell38
  2. Specialty average1,380

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.

Helen Bonnie Trop-Zell among 747 specialist records in Arizona

Helen Bonnie Trop-Zell, MD is one of 747 specialist records with a practice address in Arizona. 25% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 86% newer
  • In a Medicare fileYes · 25% of these records are
  • In the CMS Doctors and Clinicians fileNo · 16% of these records are
  • Record last updated2013 · 83% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Specialist providers in Arizona

There are 747 specialist records in Arizona.

The 8 specialist records with the nearest ZIP codes

  1. John Burge, MDScottsdale, AZ 852581841296860
  2. Janice Donnelly, MDScottsdale, AZ 852581801852009
  3. Todd Hobgood, M.D.Scottsdale, AZ 852581659367274
  4. Robert Newman, MDScottsdale, AZ 852581962469874
  5. Jeffrey Ptak, M.D. FACSScottsdale, AZ 852581184604704
  6. Tariq Qamar, M.D.Scottsdale, AZ 852581134105034
  7. Steven Salas, MDScottsdale, AZ 852581235135278
  8. Henry Sanel, M.D.Scottsdale, AZ 852581811983349

Common questions

What is Helen Bonnie Trop-Zell, MD's NPI number?

Helen Bonnie Trop-Zell, MD's National Provider Identifier (NPI) is 1346237930, issued on Sep 29, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Helen Bonnie Trop-Zell, MD located?

The NPPES record lists a practice address at 9953 N 95TH St, Scottsdale, AZ, 85258. Phone: (480) 945-8360. Providers update this record themselves, so call before visiting.

How can I verify Helen Bonnie Trop-Zell, MD's license?

NPPES lists Arizona license number AZ23273, as entered by the provider. Search the Arizona board that licenses this profession; the NPPES record confirms identity only.

How much does Helen Bonnie Trop-Zell, MD prescribe under Medicare Part D?

In 2024, Helen Bonnie Trop-Zell, MD had 38 Medicare Part D claims for 12 beneficiaries; the average among specialist prescribers was 1,380. Part D covers Medicare prescriptions 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.

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.