Individual provider Active NPI

Alan G.Y. Chang, M.D.

  • Gastroenterology Physician
  • Bellingham, WA
National Provider Identifier
1255398285
Registry record updated May 24, 2023
On this page

Key facts

NPPES NPI Registry
Primary specialty
Gastroenterology PhysicianTaxonomy code 207RG0100X
License
MD00036498 Issued in WA
Practice address
3111 Woburn St Ste 201
Bellingham, WA 98226-6610
Phone
(360) 543-5054
Fax
(360) 733-1659
NPI assigned
Apr 26, 2006
Last updated
May 24, 2023By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on May 24, 2023

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Gastroenterology Physician 207RG0100X MD00036498 WA Primary

Addresses

Primary practice location

3111 Woburn St Ste 201
Bellingham, WA 98226-6610

Mailing address

3111 Woburn St Ste 201
Bellingham, WA 98226-6610
Phone (360) 543-5054

Other practice location 1

1342 NE Medical Center Dr Ste 100
Bend, OR 97701-5918
Phone (541) 706-5777

Other identifiers 1

IdentifierTypeStateIssuer
8231334MedicaidWA

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in WA, MT, WI3 enrollments
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: Yes
  • Hospice: Yes
Green means eligible to order or refer.

Enrollment records 3

Enrollment IDStateProvider typePAC IDDetails
I20100923001467 WA Practitioner - Gastroenterology 7719963230 Reassigns benefits to 1 organization
I20201109000663 MT Practitioner - Gastroenterology 7719963230 Reassigns benefits to 1 organization
I20210603001051 WI Practitioner - Gastroenterology 7719963230 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
GastroenterologyAlso: Internal Medicine
Education
University of Hawaii John a. Burns School of Medicine, 1989
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Aspirus Rhinelander and Tomahawk Hospitals and Clinics, Inc.Group PAC ID 9335059856, shared by 17 NPIs, 566 clinicians

Practice addresses (Care Compare)

2251 N Shore Dr
Rhinelander, WI 54501-6710

824 Illinois Ave
Stevens Point, WI 54481-3112
Phone (715) 344-1600

900 Illinois Ave
Stevens Point, WI 54481-3114
Phone (715) 346-5000

Hospital & facility affiliations

Procedures performed for Medicare patients

ProcedureNumber of procedures
Colonoscopy14
Upper gastrointestinal (GI) endoscopy for acid reflux31

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Northwest Gastroenterology Professional LLC Gastroenterology CurrentSince Oct 1, 1998 Accepting new patients
Aspirus Rhinelander & Tomahawk Hospitals & Clinics, Inc. CurrentSince Mar 23, 2024 Accepting new patients
Aspirus Rhinelander & Tomahawk Hospitals & Clinics, Inc. CurrentSince Mar 23, 2024 Accepting new patients
Aspirus Stevens Point Hospital & Clinics, Inc. CurrentSince May 20, 2021 Accepting new patients
Aspirus Stevens Point Hospital & Clinics, Inc. CurrentSince May 20, 2021 Accepting new patients

Locations

29980 Network Pl
Chicago, IL 60673

2979 Squalicum Pkwy
Ste 301
Bellingham, WA 98225
Phone (360) 734-1420

3111 Woburn St
Ste 201
Bellingham, WA 98226
Phone (360) 543-5054

2251 N Shore Dr
Ste 100
Rhinelander, WI 54501
Phone (715) 361-3000

824 Illinois Ave
Stevens Point, WI 54481
Phone (715) 342-7500

900 Illinois Ave
Stevens Point, WI 54481
Phone (715) 342-7500

Interoperability endpoints

  • Direct secure messaging: afalkenberg167770@direct.aspirus.org

Organizations & group practices 6

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 2

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

NPI Registry JSON

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

{
    "created_epoch": "1146009600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1684886400000",
    "number": "1255398285",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3111 WOBURN ST STE 201",
            "city": "BELLINGHAM",
            "state": "WA",
            "postal_code": "982266610",
            "telephone_number": "360-543-5054",
            "fax_number": "360-733-1659"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3111 WOBURN ST STE 201",
            "city": "BELLINGHAM",
            "state": "WA",
            "postal_code": "982266610",
            "telephone_number": "360-543-5054",
            "fax_number": "360-733-1659"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1342 NE Medical Center Dr Ste 100",
            "address_purpose": "LOCATION",
            "city": "Bend",
            "state": "OR",
            "postal_code": "977015918",
            "country_code": "US",
            "telephone_number": "541-706-5777",
            "fax_number": "541-429-6642",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "CHANG",
        "first_name": "ALAN",
        "middle_name": "G.Y.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-04-26",
        "last_updated": "2023-05-24",
        "certification_date": "2023-05-24",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "WA",
            "license": "MD00036498",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "8231334",
            "state": "WA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Bellingham, WA

Sources for this page

Verify at the official NPI Registry.