NPIMap

Individual provider Active NPI

Marsden Scott Blois IV, MD

  • Advanced Heart Failure and Transplant Cardiology Physician
  • Boulder, CO
National Provider Identifier
1215938683
Registry record updated Jul 17, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Advanced Heart Failure and Transplant Cardiology PhysicianTaxonomy code 207RA0001X
License
DR.0034464 Issued in CO
Practice address
4743 Arapahoe Ave
Ste 201
Boulder, CO 80303-1113
Phone
(303) 442-2395
Fax
(303) 442-1073
NPI assigned
Aug 9, 2005
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 17, 2026

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Advanced Heart Failure and Transplant Cardiology Physician 207RA0001X DR.0034464 CO Primary
Cardiovascular Disease Physician 207RC0000X DR.0034464 CO
Cardiovascular Disease Physician 207RC0000X J7308 TX

Addresses

Primary practice location

4743 Arapahoe Ave
Ste 201
Boulder, CO 80303-1113

Mailing address

1760 E Ken Pratt Blvd Ste 205
Longmont, CO 80504-5311
Phone (720) 718-8180

Other practice location 1

1760 E Ken Pratt Blvd Ste 205
Longmont, CO 80504-5311
Phone (720) 718-8180

Other names 1

  • Scott Blois IV Other name

Medicare participation

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

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20150914002390 CO Practitioner - Cardiovascular Disease (Cardiology)Practitioner - Advanced Heart Failure and Transplant Cardiology 4880683077 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Cardiovascular Disease (Cardiology)Also: Advanced Heart Failure and Transplant Cardiology
Education
Baylor College of Medicine, 1993
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Poudre Valley Medical Group LLCGroup PAC ID 9638208549, 2,425 clinicians

Practice addresses (Care Compare)

2970 Arapahoe Rd
Lafayette, CO 80026-8054
Phone (303) 460-6010

Hospital & facility affiliations

  • Boulder Community Health Hospital, Boulder, CO, CCN 060027
  • Longs Peak Hospital Hospital, Longmont, CO, CCN 060128
  • Medical Center of the Rockies Hospital, Loveland, CO, CCN 060119
  • Poudre Valley Hospital Hospital, Fort Collins, CO, CCN 060010
  • Uchealth Greeley Hospital Hospital, Greeley, CO, CCN 060131

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Boulder Community Health Current Accepting new patients
Poudre Valley Medical Group, LLC CurrentSince Mar 30, 2026 Accepting new patients
Poudre Valley Medical Group, LLC Cardiovascular Disease Past Accepting new patients
Boulder Community Health Past Accepting new patients
Boulder Community Health Past Accepting new patients

Locations

4747 Arapahoe Ave
Boulder, CO 80303
Phone (303) 415-7000

2750 Broadway St
Ste 2178
Boulder, CO 80304
Phone (303) 440-3057

2750 Broadway St
Ste 2170
Boulder, CO 80304
Phone (303) 440-3057

4404 Barranca Ln
Castle Rock, CO 80104
Phone (720) 733-5260

1000 W South Boulder Rd
Ste 216
Lafayette, CO 80026

2970 Arapahoe Rd
Lafayette, CO 80026
Phone (303) 460-6010

1760 E Ken Pratt Blvd
Ste 205
Longmont, CO 80504
Phone (720) 718-3930

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 and National Provider Directory roles.

Hospital & facility affiliations 54

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

View all 54

NPI Registry JSON

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

{
    "created_epoch": "1123545600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1784246400000",
    "number": "1215938683",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1760 E KEN PRATT BLVD STE 205",
            "city": "LONGMONT",
            "state": "CO",
            "postal_code": "805045311",
            "telephone_number": "720-718-8180",
            "fax_number": "720-718-5989"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4743 ARAPAHOE AVE",
            "address_2": "STE 201",
            "city": "BOULDER",
            "state": "CO",
            "postal_code": "803031113",
            "telephone_number": "303-442-2395",
            "fax_number": "303-442-1073"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1760 E Ken Pratt Blvd Ste 205",
            "address_purpose": "LOCATION",
            "city": "Longmont",
            "state": "CO",
            "postal_code": "805045311",
            "country_code": "US",
            "telephone_number": "720-718-8180",
            "fax_number": "720-718-5989",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "BLOIS",
        "first_name": "MARSDEN",
        "middle_name": "SCOTT",
        "name_suffix": "IV",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-08-09",
        "last_updated": "2026-07-17",
        "certification_date": "2026-07-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RA0001X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Advanced Heart Failure and Transplant Cardiology",
            "state": "CO",
            "license": "DR.0034464",
            "primary": true
        },
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "CO",
            "license": "DR.0034464",
            "primary": false
        },
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "TX",
            "license": "J7308",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "SCOTT",
            "last_name": "BLOIS",
            "suffix": "IV",
            "credential": "MD",
            "code": "5",
            "type": "Other Name"
        }
    ]
}

Other providers in Boulder, CO

Sources for this page

Verify at the official NPI Registry.