NPIMap

Individual provider Active NPI

Ian J Bristol, M.D.

  • Radiation Oncology Physician
  • Portland, ME
National Provider Identifier
1235357294
Registry record updated Apr 21, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Radiation Oncology PhysicianTaxonomy code 2085R0001X
License
MD17399 Issued in ME
Practice address
22 Bramhall St
Portland, ME 04102-3134
Phone
(207) 662-2276
NPI assigned
Apr 23, 2007
Last updated
Apr 21, 2026By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Apr 21, 2026

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Radiation Oncology Physician 2085R0001X MD17399 ME Primary
Radiation Oncology Physician 2085R0001X 25134 NH

Addresses

Primary practice location

22 Bramhall St
Portland, ME 04102-3134

Mailing address

324 Gannett Dr Ste 200
South Portland, ME 04106-3266
Phone (207) 482-7800

Other practice location 1

11 Rock Row Ste 320
Westbrook, ME 04092-4877
Phone (207) 303-3300

Other practice location 2

11 Rock Row Ste 120
Westbrook, ME 04092-4877
Phone (207) 303-3350

Other practice location 3

15 Rock Row Ste 110
Westbrook, ME 04092-4877
Phone (207) 303-3300

Other practice location 4

333 Borthwick Ave
Portsmouth, NH 03801-7128
Phone (603) 559-4188

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in ME, NH2 enrollments
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20070728000174 ME Practitioner - Radiation Oncology 8921109349 Reassigns benefits to 5 organizations
I20240415003116 NH Practitioner - Radiation Oncology 8921109349 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Radiation Oncology
Education
University of Rochester School of Medicine and Dentistry, 2002
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Spectrum Healthcare Partners PAGroup PAC ID 7618871245, shared by 7 NPIs, 305 clinicians

Practice addresses (Care Compare)

100 Campus Dr
Scarborough, ME 04074-7171
Phone (207) 396-7600

15 Rock Row
Suite 110
Westbrook, ME 04092-4877
Phone (207) 303-3300

22 Bramhall St
Portland, ME 04102-3134
Phone (207) 871-2571

27 Industrial Ave
Sanford, ME 04073-5820
Phone (207) 459-1600

333 Borthwick Ave
Portsmouth, NH 03801-7128
Phone (603) 559-4188

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
97.93 of 100Reported as apm
Quality
83.31
Promoting interoperability
100
Improvement activities
40

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
25134NHMDRadiation Oncology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Mainehealth CurrentSince Jan 1, 2014 Accepting new patients
Maine Center for Cancer Medicine & Blood Disorders, P.a. Radiation Oncology CurrentSince May 13, 2025 Accepting new patients
Maine Medical Partners CurrentSince May 24, 2022 Accepting new patients
Spectrum Healthcare Partners, P.a. CurrentSince Aug 1, 2007 Accepting new patients
Maine Medical Partners CurrentSince May 24, 2022 Accepting new patients
Spectrum Healthcare Partners, PA Radiation Oncology CurrentSince Aug 1, 2007 Accepting new patients
Spectrum Healthcare Partners, PA Current Accepting new patients
Mainehealth CurrentSince Jan 1, 2014 Accepting new patients
Mainehealth Current Accepting new patients
Mainehealth Past Accepting new patients
Maine Center of Cancer Medicine & Blood Disorders Past Accepting new patients

Locations

175 Congress Ave
Bath, ME 04530
Phone (207) 386-5656

2 Independence Dr
Kennebunk, ME 04043
Phone (207) 303-3300

22 Bramhall St
Portland, ME 04102
Phone (207) 662-2179

22 Bramhall St
#C
Portland, ME 04102

482 Congress St
Portland, ME 04101
Phone (207) 773-8133

140 Academy St
Presque Isle, ME 04769
Phone (207) 768-4000

27 Industrial Ave
Sanford, ME 04073
Phone (207) 459-1600

100 Campus Dr
Unit 108
Scarborough, ME 04074
Phone (207) 303-3300

100 Campus Dr
Unit 121
Scarborough, ME 04074
Phone (207) 396-7760

100 Campus Dr
Unit 121A
Scarborough, ME 04074

175 US Route 1
Scarborough, ME 04074
Phone (207) 396-7700

92 Campus Dr
Ste C
Scarborough, ME 04074
Phone (207) 797-5753

324 Gannett Dr
Ste 200
South Portland, ME 04106
Phone (207) 482-7861

11 Rock Row
Ste 120
Westbrook, ME 04092
Phone (207) 303-3000

11 Rock Row
Ste 150
Westbrook, ME 04092
Phone (207) 303-3300

11 Rock Row
Ste 320
Westbrook, ME 04092
Phone (207) 303-3300

15 Rock Row
Ste 110
Westbrook, ME 04092
Phone (207) 303-3300

3073 White Mountain Hwy
North Conway, NH 03860
Phone (603) 356-5472

333 Bothwick Ave
Portsmouth, NH 03801
Phone (603) 433-4907

Organizations & group practices 11

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

Hospital & facility affiliations 44

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

View all 44

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1177286400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1776729600000",
    "number": "1235357294",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "324 GANNETT DR STE 200",
            "city": "SOUTH PORTLAND",
            "state": "ME",
            "postal_code": "041063266",
            "telephone_number": "207-482-7800"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "22 BRAMHALL ST",
            "city": "PORTLAND",
            "state": "ME",
            "postal_code": "041023134",
            "telephone_number": "207-662-2276"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "11 Rock Row Ste 320",
            "address_purpose": "LOCATION",
            "city": "Westbrook",
            "state": "ME",
            "postal_code": "040924877",
            "country_code": "US",
            "telephone_number": "207-303-3300",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "11 Rock Row Ste 120",
            "address_purpose": "LOCATION",
            "city": "Westbrook",
            "state": "ME",
            "postal_code": "040924877",
            "country_code": "US",
            "telephone_number": "207-303-3350",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "15 Rock Row Ste 110",
            "address_purpose": "LOCATION",
            "city": "Westbrook",
            "state": "ME",
            "postal_code": "040924877",
            "country_code": "US",
            "telephone_number": "207-303-3300",
            "fax_number": "207-241-4439",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "333 Borthwick Ave",
            "address_purpose": "LOCATION",
            "city": "Portsmouth",
            "state": "NH",
            "postal_code": "038017128",
            "country_code": "US",
            "telephone_number": "603-559-4188",
            "fax_number": "603-443-4906",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "BRISTOL",
        "first_name": "IAN",
        "middle_name": "J",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-04-23",
        "last_updated": "2026-04-21",
        "certification_date": "2026-04-21",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2085R0001X",
            "taxonomy_group": "",
            "desc": "Radiology, Radiation Oncology",
            "state": "ME",
            "license": "MD17399",
            "primary": true
        },
        {
            "code": "2085R0001X",
            "taxonomy_group": "",
            "desc": "Radiology, Radiation Oncology",
            "state": "NH",
            "license": "25134",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Portland, ME

Sources for this page

Verify at the official NPI Registry.