NPIMap

Organization Active NPI

Boulder Valley Gastroenterology Inc.

Doing business as Gastroenterology of the Rockies

  • Gastroenterology Physician
  • Lafayette, CO
National Provider Identifier
1902832603
Registry record updated Oct 14, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Gastroenterology PhysicianTaxonomy code 207RG0100X
Legal business name
BOULDER VALLEY GASTROENTEROLOGY INC.
Doing business as
Gastroenterology of the Rockies
Practice address
1000 W South Boulder Rd
Suite 200
Lafayette, CO 80026-2752
Phone
(303) 604-5000
Fax
(720) 890-0364
NPI assigned
Jun 24, 2006
Last updated
Oct 14, 2026By the provider in NPPES
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Oct 14, 2026

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

Authorized official

Name
Dr. Daus Mahnke, M.D.NPI 1306878566
Title
Board Member
Phone
(303) 604-5000

Authorized official NPPES reports the official by name only. The link goes to the one practitioner connected to this organization with that name.

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Gastroenterology Physician 207RG0100X Primary

Addresses

Primary practice location

1000 W South Boulder Rd
Suite 200
Lafayette, CO 80026-2752

Mailing address

382 S Arthur Ave
Louisville, CO 80027-3094
Phone (303) 604-5000

Other practice location 1

11900 Grant St Ste 360
Northglenn, CO 80233-1117
Phone (303) 604-5000

Other practice location 2

13952 Denver West Pkwy Ste 100
Lakewood, CO 80401-3141
Phone (303) 604-5000

Other practice location 3

1551 Professional Ln Unit 290
Longmont, CO 80501-6970
Phone (303) 604-5000

Other practice location 4

3301 W 144th Ave Unit 200
Broomfield, CO 80023-9511
Phone (303) 604-5000

Other practice location 5

16677 Lowell Blvd Ste 200
Broomfield, CO 80023-8053
Phone (303) 604-5000

Other practice location 6

1960 N Ogden St Ste 210
Denver, CO 80218-3668
Phone (303) 604-5000

Other practice location 7

1755 48th St Ste 100
Boulder, CO 80301-2712
Phone (303) 604-5000

Other identifiers 3

IdentifierTypeStateIssuer
04004180MedicaidCO
CD5666OtherCORAILROAD MEDICARE
GAA1308OtherCOBCBS

Other names 1

  • Gastroenterology of the Rockies Doing business as

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CO

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
O20040130001035 CO Part B Supplier - Clinic/Group Practice 4688577174 Receives reassigned benefits from 76 practitioners
6 other NPIs on this enrollment
Practice locations: Lakewood, CO; Littleton, CO; Longmont, CO; Northglenn, CO; Broomfield, CO; Denver, CO; Boulder, CO; Aurora, CO…

Other NPIs on the same Medicare enrollment 6

NPIs listed together on one Medicare enrollment, typically parts of the same organization.

National Provider Directory

National Provider Directory

Locations

1755 48th St
Ste 100
Boulder, CO 80301
Phone (720) 932-7714

1755 48th St
Ste 110
Boulder, CO 80301
Phone (303) 444-4066

5387 Manhattan Cir
Ste 201
Boulder, CO 80303
Phone (303) 494-2705

16677 Lowell Blvd
Ste 200
Broomfield, CO 80023

1960 N Ogden St
Ste 210
Denver, CO 80218
Phone (303) 832-9277

100 W South Boulder Rd
Lafayette, CO 80026
Phone (202) 604-5000

13952 Denver West Pkwy
Bldg 53
Lakewood, CO 80401

13952 Denver West Pkwy
Bldg J3
Lakewood, CO 80401

1551 Professional Ln
Longmont, CO 80501
Phone (303) 315-0400

1551 Professional Ln
Ste 295
Longmont, CO 80501
Phone (303) 702-5900

11900 Grant St
Ste 360
Northglenn, CO 80233
Phone (817) 306-5630

Ownership & related parties

Subparts reporting this organization as parent 7

Organizations that report themselves as subparts in NPPES and name this organization, in the same state, as their parent.

Practitioners & affiliated clinicians

Practitioners 79

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

View all 79

NPI Registry JSON

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

{
    "created_epoch": "1151107200000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1791936000000",
    "number": "1902832603",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "382 S ARTHUR AVE",
            "city": "LOUISVILLE",
            "state": "CO",
            "postal_code": "800273094",
            "telephone_number": "303-604-5000",
            "fax_number": "720-890-0364"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1000 W SOUTH BOULDER RD",
            "address_2": "SUITE 200",
            "city": "LAFAYETTE",
            "state": "CO",
            "postal_code": "800262752",
            "telephone_number": "303-604-5000",
            "fax_number": "720-890-0364"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "11900 Grant St Ste 360",
            "address_purpose": "LOCATION",
            "city": "Northglenn",
            "state": "CO",
            "postal_code": "802331117",
            "country_code": "US",
            "telephone_number": "303-604-5000",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "13952 Denver West Pkwy Ste 100",
            "address_purpose": "LOCATION",
            "city": "Lakewood",
            "state": "CO",
            "postal_code": "804013141",
            "country_code": "US",
            "telephone_number": "303-604-5000",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1551 Professional Ln Unit 290",
            "address_purpose": "LOCATION",
            "city": "Longmont",
            "state": "CO",
            "postal_code": "805016970",
            "country_code": "US",
            "telephone_number": "303-604-5000",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "3301 W 144th Ave Unit 200",
            "address_purpose": "LOCATION",
            "city": "Broomfield",
            "state": "CO",
            "postal_code": "800239511",
            "country_code": "US",
            "telephone_number": "303-604-5000",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "16677 Lowell Blvd Ste 200",
            "address_purpose": "LOCATION",
            "city": "Broomfield",
            "state": "CO",
            "postal_code": "800238053",
            "country_code": "US",
            "telephone_number": "303-604-5000",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1960 N Ogden St Ste 210",
            "address_purpose": "LOCATION",
            "city": "Denver",
            "state": "CO",
            "postal_code": "802183668",
            "country_code": "US",
            "telephone_number": "303-604-5000",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1755 48th St Ste 100",
            "address_purpose": "LOCATION",
            "city": "Boulder",
            "state": "CO",
            "postal_code": "803012712",
            "country_code": "US",
            "telephone_number": "303-604-5000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "organization_name": "BOULDER VALLEY GASTROENTEROLOGY INC.",
        "organizational_subpart": "NO",
        "enumeration_date": "2006-06-24",
        "last_updated": "2026-10-14",
        "certification_date": "2026-10-14",
        "status": "A",
        "authorized_official_last_name": "MAHNKE",
        "authorized_official_first_name": "DAUS",
        "authorized_official_title_or_position": "BOARD MEMBER",
        "authorized_official_telephone_number": "303-604-5000",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "M.D."
    },
    "taxonomies": [
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "04004180",
            "state": "CO"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "RAILROAD MEDICARE",
            "identifier": "CD5666",
            "state": "CO"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BCBS",
            "identifier": "GAA1308",
            "state": "CO"
        }
    ],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "Gastroenterology of the Rockies",
            "code": "3",
            "type": "Doing Business As"
        },
        {
            "organization_name": "Gastroenterology of the Rockies",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

Other providers in Lafayette, CO

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 14, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.