NPPES file of Aug 9, 2026

Timothy Ross Diestelkamp, MD

Diagnostic Radiology Physician · Phoenix, AZ

Timothy Ross Diestelkamp, MD is a diagnostic radiology physician with a practice address in Phoenix, Arizona, and NPI 1861998635, issued on Apr 2, 2018. Check the license (Arizona 72505, 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
1861998635
Name
Timothy Ross Diestelkamp
Credential
MD
Primary taxonomy
Diagnostic Radiology Physician 2085R0202X
License number
72505 AZ
Self-reported in NPPES; status is on the state search
Practice location
4302 E Whitton Ave, Phoenix, AZ 85018
Phone
(251) 680-6451
Enumerated
Apr 2, 2018
Record last updated
Apr 29, 2024
Medicare enrollment
Enrolled (PECOS I20240516002353); accepts Medicare assignment
Medical or professional school
Cooper Medical School Of Rowan University, 2018
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 →

Verify Timothy Ross Diestelkamp in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersArizona Medical Board
    Search for license 72505    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 one group practice

  1. Sonoran Radiology LtdNew York, NY

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

Timothy Ross Diestelkamp among 869 diagnostic radiology physician records in Arizona

Timothy Ross Diestelkamp, MD 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 2018, is newer than 84% of them.

  • NPI issued2018 · 84% of these records are older, 14% newer
  • In a Medicare fileYes · 72% of these records are
  • In the CMS Doctors and Clinicians fileYes · 66% of these records are
  • Graduated2018 · median 2003 among the 573 with a school on file
  • Record last updated2024 · 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).

Diagnostic Radiology Physician providers in Arizona

There are 869 diagnostic radiology physician records in Arizona.

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

The 8 diagnostic radiology physician records with the nearest ZIP codes

  1. Noam Belkind, M.D.Phoenix, AZ 850181225212491
  2. Ross Levatter, MDPhoenix, AZ 850181902821754
  3. Melissa Martin, DOPhoenix, AZ 850181326056409
  4. Zandra Nocera, MDPhoenix, AZ 850181255439485
  5. Rebecca Rodie, M.D.Phoenix, AZ 850181053379545
  6. Tamim Sultani, M.D.Phoenix, AZ 850181346446317
  7. Asmaa Aamir, M.D.Phoenix, AZ 850161912163791
  8. Drew Davis, MDPhoenix, AZ 850161568624146

Common questions

What is Timothy Ross Diestelkamp, MD's NPI number?

Timothy Ross Diestelkamp, MD's National Provider Identifier (NPI) is 1861998635, issued on Apr 2, 2018. An NPI identifies a provider in billing; it is not a license.

Where is Timothy Ross Diestelkamp, MD located?

The NPPES record lists a practice address at 4302 E Whitton Ave, Phoenix, AZ, 85018. Phone: (251) 680-6451. Providers update this record themselves, so call before visiting.

How can I verify Timothy Ross Diestelkamp, MD's license?

NPPES lists Arizona license number 72505, 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.