Gregory Russell Balko, MD

Primary specialty

Emergency Medicine PhysicianTaxonomy code 207P00000X

License

37036 Issued in CO

Practice address

401 Castle Creek Rd
Aspen, CO 81611-1159

Phone

(970) 544-1228

NPI assigned

Jun 11, 2005

Last updated

Feb 24, 2026By the provider in NPPES

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 1

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Enrolled in CO

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 1

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

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.

• Aspen Valley Hospital District

  • Critical Access Hospital
  • Aspen, CO
  • NPI 1518960814

  Emergency Medicine

  Medicare reassignment NPD
• Aspen Valley Emergency Physicians

  • Emergency Medicine Physician
  • Aspen, CO
  • NPI 1891520151
  NPD
• Aspen Valley Hospital District

  • Durable Medical Equipment & Medical Supplies
  • Aspen, CO
  • NPI 1942357363
  NPD

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

{
    "created_epoch": "1118448000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1771891200000",
    "number": "1932103405",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "401 CASTLE CREEK RD",
            "city": "ASPEN",
            "state": "CO",
            "postal_code": "816111159",
            "telephone_number": "970-544-1228"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "401 CASTLE CREEK RD",
            "city": "ASPEN",
            "state": "CO",
            "postal_code": "816111159",
            "telephone_number": "970-544-1228"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "BALKO",
        "first_name": "GREGORY",
        "middle_name": "RUSSELL",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2005-06-11",
        "last_updated": "2026-02-24",
        "certification_date": "2026-02-24",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "CO",
            "license": "37036",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "92854532",
            "state": "CO"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Nina K Axelrod, BFA
• Joseph Stevens Ayers, D.O.
• Megan Baker, LPC
• Sandra Jean Baker, CMT
• Liza N Bakken, PT
• Ellen Megan Barlow, DPT
• Trey Barnes, LMT,MMP
• Sandra Kaye Barthram, O.D.
• Barthramod Inc (Sandra Barthram, OD)
• Linzi Barton, PHARMD

• Emergency Medicine Physician in Aspen, CO
• Providers in Aspen, CO by specialty
• Emergency Medicine Physician in Colorado

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 24, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.