Grant Harmon, MD
NPI 1639606379 · Radiation Oncology Physician · Gresham, OR
Enrolled with Medicare as Practitioner - Radiation Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Grant Harmon, MD is a Radiation Oncology Physician provider in Gresham, OR (NPI 1639606379).
Provider details
- NPI number
- 1639606379
- Entity type
- Individual
- Primary specialty
- Radiation Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 125071100 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
9 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
2,264 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) |
|---|---|---|
| Ct Guidance for Insertion of Radiation Therapy Fields77014 | 871 | $43 |
| Radiation Treatment Management, 5 Treatment Sessions77427 | 214 | $182 |
| Calculation of Radiation Therapy Dose77300 | 175 | $31 |
| Design and Construction of Complex Radiation Treatment Device77334 | 150 | $58 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 135 | $92 |
| Prolonged Office Or Other Outpatient Evaluation and Management Service(s) Beyond the Maximum Required Time of the Primary Procedure Which Has Been Selected Using Total Time on the Date of the Primary Service; Each Additional 15 Minutes By the Physician OrG2212 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 5 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tamsulosin Hcl | 42 | 22 |
| Mometasone Furoate | 30 | 23 |
| Dexamethasone | 15 | 12 |
| Venlafaxine Hclbrand: Venlafaxine Hcl Er | 13 | — |
| Lidocaine Hclbrand: Lidocaine Hcl Viscous | 11 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (3)
- 510 Sw Ramsey AveGrants Pass, OR 97527-5554Phone: (541) 789-4673
- 2825 E Barnett RdMedford, OR 97504-8332Phone: (541) 789-7000
- 940 Royal AveMedford, OR 97504-6193Phone: (541) 732-7000
Registry dates
- Enumerated
- 2017-05-12
- Last updated
- 2025-06-06
- Certified
- 2025-06-06
Frequently asked questions
- What is Grant Harmon's NPI number?
- Grant Harmon's National Provider Identifier (NPI) is 1639606379, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Grant Harmon's specialty?
- Grant Harmon is listed in the NPPES registry with a primary specialty of Radiation Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Grant Harmon located?
- Grant Harmon's practice location on file with NPPES is 24950 Se Stark St, Gresham, OR 97030.
- What is Grant Harmon's phone number?
- The practice phone number listed in the NPPES registry for Grant Harmon is (503) 674-1152.
- Does Grant Harmon accept Medicare?
- Grant Harmon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Grant Harmon's NPI active?
- Yes — Grant Harmon's NPI (1639606379) is active in the NPPES registry as of the last update on 2025-06-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.