Mark A Linkow, MD

Primary specialty

Gastroenterology PhysicianTaxonomy code 207RG0100X

License

17747 Issued in CO

Practice address

4500 E 9TH Ave
Ste 720S
Denver, CO 80220-3900

Phone

(303) 355-3525

Fax

(303) 355-0255

NPI assigned

Sep 7, 2005

Last updated

Sep 11, 2025By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Interoperability endpoints

• Direct secure messaging: marklinkow@ddhs.allscriptsdirect.net

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.

• Colorado Gastroenterology Prof LLC

  • Gastroenterology Physician
  • Denver, CO
  • NPI 1396790101
  NPD (past)

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

{
    "created_epoch": "1126051200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757548800000",
    "number": "1639163587",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4500 E 9TH AVE",
            "address_2": "STE 720S",
            "city": "DENVER",
            "state": "CO",
            "postal_code": "802203900",
            "telephone_number": "303-355-3525",
            "fax_number": "303-355-0255"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4500 E 9TH AVE",
            "address_2": "STE 720S",
            "city": "DENVER",
            "state": "CO",
            "postal_code": "802203900",
            "telephone_number": "303-355-3525",
            "fax_number": "303-355-0255"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "LINKOW",
        "first_name": "MARK",
        "middle_name": "A",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-09-07",
        "last_updated": "2025-09-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CO",
            "license": "17747",
            "primary": false
        },
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "CO",
            "license": "17747",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "01177476",
            "state": "CO"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Emily Lines, M.D.
• Nicole Linhardt, LPC, LAC
• Jennifer Linhorst, MD
• Bailey Link, ND
• Michael J Link, DDS
• Ronald Gene Linkow, DDS
• Tiana Linkus
• Katie Linn
• Sandra Linn, R.N., M.S., C.G.C.
• Taylor Brooke Linn

• Gastroenterology Physician in Denver, CO
• Providers in Denver, CO by specialty
• Gastroenterology Physician in Colorado

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.