NPPES file of Aug 9, 2026

Ralph Drosten, M.D.

Diagnostic Radiology Physician · Tucson, AZ

Ralph Drosten, M.D. is a diagnostic radiology physician with a practice address in Tucson, Arizona, and NPI 1386743128, issued on Sep 21, 2006. Check the license (Arizona 36894, 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 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1386743128
Name
Ralph Drosten
Credential
M.D.
Primary taxonomy
Diagnostic Radiology Physician 2085R0202X
License number
36894 AZ
Self-reported in NPPES; status is on the state search
Practice location
1625 N Campbell Ave, Tucson, AZ 85719
Phone
(520) 626-1069
Enumerated
Sep 21, 2006
Record last updated
Oct 15, 2025
Medicaid ID
915621 AZ
Medicare enrollment
Enrolled (PECOS I20080917000231); 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 diagnostic radiology physician records → All 869 in Arizona → Look up another NPI →

Also registered at 1625 N Campbell Ave

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

  1. Kristopher Abbate, MDInternal Medicine Physician1184112401
  2. Michelle Abbate, MDObstetrics & Gynecology Physician1184111940
  3. Abdelrahman AbdallaDiagnostic Radiology Physician1457139339
  4. Jonathan Abdo, MDStudent in an Organized Health Care Education/Training Program1811783814
  5. Kalkidan Abebe, MDInternal Medicine Physician1508435504
  6. Sameer Aboufadel, DO, MPHEmergency Medicine Physician1639063431

Verify Ralph Drosten in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersArizona Medical Board
    Search for license 36894    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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Bills Medicare through 3 group practices

  1. Banner-University Medical GroupTucson, AZ
  2. Sonoran Radiology LtdPeoria, AZ
  3. Southwest Diagnostic Imaging LLCScottsdale, AZ

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

Ralph Drosten among 869 diagnostic radiology physician records in Arizona

Ralph Drosten, M.D. is one of 869 diagnostic radiology physician records with a practice address in Arizona. 72% 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 16% of them.

  • NPI issued2006 · 16% of these records are older, 49% newer
  • In a Medicare fileYes · 72% of these records are
  • In the CMS Doctors and Clinicians fileYes · 66% of these records are
  • Graduated1992 · median 2003 among the 573 with a school on file
  • Record last updated2025 · 56% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

233 diagnostic radiology physician records list a practice address in Tucson

They are 233 of the 18,788 NPPES records with a practice address in Tucson, and 869 diagnostic radiology physician records in Arizona.

All 869 in Arizona → Every provider in Tucson → Diagnostic Radiology Physician nationwide →

The 8 diagnostic radiology physician records with the nearest ZIP codes

  1. Christopher Ardary, M.D.Tucson, AZ 857191659785327
  2. Virginia Baker, MDTucson, AZ 857191639141427
  3. Tyson Chadaz, M.D.Tucson, AZ 857191235459215
  4. Jing-Tzyh Chiang, MDTucson, AZ 857191780883835
  5. Dan Dwarka, M.D.Tucson, AZ 857191578763108
  6. Per Granstrom, MDTucson, AZ 857191851365647
  7. Hasan Ozgur, M.D.Tucson, AZ 857191447230255
  8. Melissa Rosado-De-Christenson, MDTucson, AZ 857191295785996

Common questions

What is Ralph Drosten, M.D.'s NPI number?

Ralph Drosten, M.D.'s National Provider Identifier (NPI) is 1386743128, issued on Sep 21, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Ralph Drosten, M.D. located?

The NPPES record lists a practice address at 1625 N Campbell Ave, Tucson, AZ, 85719. Phone: (520) 626-1069. Providers update this record themselves, so call before visiting.

How can I verify Ralph Drosten, M.D.'s license?

NPPES lists Arizona license number 36894, 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.

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.