NPIMap

Individual provider Active NPI

Mark H Nathanson, D.O.

  • Family Medicine Physician
  • Aurora, CO
National Provider Identifier
1811998289
Registry record updated Jul 13, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Family Medicine PhysicianTaxonomy code 207Q00000X
License
32517 Issued in CO
Practice address
1550 S Potomac St
Ste 370
Aurora, CO 80012-5455
Phone
(303) 369-1080
Fax
(303) 750-4913
NPI assigned
Aug 9, 2005
Last updated
Jul 13, 2026By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 13, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Family Medicine Physician 207Q00000X 32517 CO Primary

Addresses

Primary practice location

1550 S Potomac St
Ste 370
Aurora, CO 80012-5455

Mailing address

1550 S Potomac St
Ste 370
Aurora, CO 80012-5455
Phone (303) 369-1080

Other identifiers 3

IdentifierTypeStateIssuer
P00075124OtherCORAILROAD MEDICARE
84087252106OtherCOPACIFICARE/SECURE HORIZON
32349OtherCOANTHEM BLUE CROSS

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
I20041230000350 CO Practitioner - Family Practice 1456319953 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Family Practice
Education
College of Osteo Med of the Pacific at Pomona, 1991
Medicare assignment
Accepts the Medicare-approved amount as payment in full

Practice addresses (Care Compare)

1550 S Potomac St
Suite 370
Aurora, CO 80012-5433

999 17TH St
Suite 500
Denver, CO 80202-2728

Hospital & facility affiliations

Procedures performed for Medicare patients

ProcedureNumber of procedures
Skin biopsy1-10

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
32517COMDFamily Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Alpine Medical Group Colorado PLLC Family Medicine CurrentSince Oct 1, 2024 Accepting new patients

Locations

1550 S Potomac St
Ste 370
Aurora, CO 80012
Phone (303) 369-1080

999 17th St
Ste 500
Denver, CO 80202
Phone (720) 355-0539

Organizations & group practices 2

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 11

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": "1123545600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1811998289",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1550 S POTOMAC ST",
            "address_2": "STE 370",
            "city": "AURORA",
            "state": "CO",
            "postal_code": "800125455",
            "telephone_number": "303-369-1080",
            "fax_number": "303-750-4913"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1550 S POTOMAC ST",
            "address_2": "STE 370",
            "city": "AURORA",
            "state": "CO",
            "postal_code": "800125455",
            "telephone_number": "303-369-1080",
            "fax_number": "303-750-4913"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "NATHANSON",
        "first_name": "MARK",
        "middle_name": "H",
        "credential": "D.O.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-08-09",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "CO",
            "license": "32517",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "RAILROAD MEDICARE",
            "identifier": "P00075124",
            "state": "CO"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "PACIFICARE/SECURE HORIZON",
            "identifier": "84087252106",
            "state": "CO"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "ANTHEM BLUE CROSS",
            "identifier": "32349",
            "state": "CO"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Aurora, CO

Sources for this page

Verify at the official NPI Registry.