Jonathan Ashman, MD
NPI 1659337566 · Radiation Oncology Physician · Scottsdale, AZ
Enrolled with Medicare as Practitioner - Radiation Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jonathan Ashman, MD is a Radiation Oncology Physician provider in Scottsdale, AZ (NPI 1659337566).
Provider details
- NPI number
- 1659337566
- Entity type
- Individual
- Primary specialty
- Radiation Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 34491 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,916 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Stereoscopic X-Ray Guidance for Localization of Target Volume for the Delivery of Radiation TherapyG6002 | 707 | $20 |
| Calculation of Radiation Therapy Dose77300 | 296 | $31 |
| Design and Construction of Complex Radiation Treatment Device77334 | 200 | $58 |
| Radiation Treatment Management, 5 Treatment Sessions77427 | 160 | $184 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 99 | $174 |
| Complex Radiation Therapy Planning77263 | 88 | $162 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-04-21
- Last updated
- 2025-11-18
- Certified
- 2025-11-18
Frequently asked questions
- What is Jonathan Ashman's NPI number?
- Jonathan Ashman's National Provider Identifier (NPI) is 1659337566, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jonathan Ashman's specialty?
- Jonathan Ashman is listed in the NPPES registry with a primary specialty of Radiation Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Jonathan Ashman located?
- Jonathan Ashman's practice location on file with NPPES is 13400 E Shea Blvd, Scottsdale, AZ 85259-5404.
- What is Jonathan Ashman's phone number?
- The practice phone number listed in the NPPES registry for Jonathan Ashman is (480) 301-8000.
- Does Jonathan Ashman accept Medicare?
- Jonathan Ashman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jonathan Ashman's NPI active?
- Yes — Jonathan Ashman's NPI (1659337566) is active in the NPPES registry as of the last update on 2025-11-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.