Ian Bristol, M.D.
NPI 1235357294 · Radiation Oncology Physician · Portland, ME
Enrolled with Medicare as Practitioner - Radiation Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ian Bristol, M.D. is a Radiation Oncology Physician provider in Portland, ME (NPI 1235357294).
Provider details
- NPI number
- 1235357294
- Entity type
- Individual
- Primary specialty
- Radiation Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MD17399 (ME)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
5 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
1,486 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 | 512 | $43 |
| Stereoscopic X-Ray Guidance for Localization of Target Volume for the Delivery of Radiation TherapyG6002 | 144 | $19 |
| Radiation Treatment Management, 5 Treatment Sessions77427 | 107 | $181 |
| Calculation of Radiation Therapy Dose77300 | 104 | $31 |
| Design and Construction of Complex Radiation Treatment Device77334 | 91 | $58 |
| Ct Guidance for Insertion of Radiation Therapy Fields77014 | 60 | $44 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 4 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tamsulosin Hcl | 118 | 38 |
| Silver Sulfadiazine | 17 | 13 |
| Fluconazole | 11 | — |
| Levothyroxine Sodium | 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 (4)
- 15 Rock Row Ste 110Westbrook, ME 04092-4877Phone: (207) 303-3300Fax: (207) 241-4439
- 11 Rock Row Ste 120Westbrook, ME 04092-4877Phone: (207) 303-3350
- 11 Rock Row Ste 320Westbrook, ME 04092-4877Phone: (207) 303-3300
- 333 Borthwick AvePortsmouth, NH 03801-7128Phone: (603) 559-4188Fax: (603) 443-4906
Registry dates
- Enumerated
- 2007-04-23
- Last updated
- 2026-04-21
- Certified
- 2026-04-21
Frequently asked questions
- What is Ian Bristol's NPI number?
- Ian Bristol's National Provider Identifier (NPI) is 1235357294, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ian Bristol's specialty?
- Ian Bristol is listed in the NPPES registry with a primary specialty of Radiation Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Ian Bristol located?
- Ian Bristol's practice location on file with NPPES is 22 Bramhall St, Portland, ME 04102-3134.
- What is Ian Bristol's phone number?
- The practice phone number listed in the NPPES registry for Ian Bristol is (207) 662-2276.
- Does Ian Bristol accept Medicare?
- Ian Bristol is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ian Bristol's NPI active?
- Yes — Ian Bristol's NPI (1235357294) is active in the NPPES registry as of the last update on 2026-04-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.