John Purviance, M.D.
NPI 1437279692 · Radiation Oncology Physician · Casper, WY
Enrolled with Medicare as Practitioner - Radiation Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Purviance, M.D. is a Radiation Oncology Physician provider in Casper, WY (NPI 1437279692).
Provider details
- NPI number
- 1437279692
- Entity type
- Individual
- Primary specialty
- Radiation Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 7688A (WY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
12,887 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Ct Guidance for Insertion of Radiation Therapy Fields77014 | 1,835 | $59 |
| Calculation of Radiation Therapy Dose77300 | 1,387 | $34 |
| Intensity Modulated Treatment Delivery, Single Or Multiple Fields/Arcs,via Narrow Spatially and Temporally Modulated Beams, Binary, Dynamic Mlc, Per Treatment SessionG6015 | 1,215 | $372 |
| Nuclear Medicine Study From Skull Base to Mid-Thigh With Ct Scan78815 | 829 | $861 |
| Stereoscopic X-Ray Guidance for Localization of Target Volume for the Delivery of Radiation TherapyG6002 | 800 | $36 |
| Ct Guidance for Insertion of Radiation Therapy Fields77014 | 707 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tamsulosin Hcl | 272 | 81 |
| Levothyroxine Sodium | 42 | — |
| Ciprofloxacin Hcl | 20 | 19 |
| Methylprednisolone | 18 | 16 |
| Oxycodone Hcl | 18 | — |
| Lamotrigine | 16 | — |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 15 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$904 across 48 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-03-30
- Last updated
- 2016-03-09
Frequently asked questions
- What is John Purviance's NPI number?
- John Purviance's National Provider Identifier (NPI) is 1437279692, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Purviance's specialty?
- John Purviance is listed in the NPPES registry with a primary specialty of Radiation Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is John Purviance located?
- John Purviance's practice location on file with NPPES is 6501 E 2nd St, Casper, WY 82609-4293.
- What is John Purviance's phone number?
- The practice phone number listed in the NPPES registry for John Purviance is (307) 235-5433.
- Does John Purviance accept Medicare?
- John Purviance is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Purviance's NPI active?
- Yes — John Purviance's NPI (1437279692) is active in the NPPES registry as of the last update on 2016-03-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.