Stephen C Altmin, MD

Primary specialty

Emergency Medicine PhysicianTaxonomy code 207P00000X

License

39829 Issued in CO

Practice address

Corner of Route N12 and N7
Fort Defiance, AZ 86504

Phone

(928) 729-8000

NPI assigned

Feb 8, 2006

Last updated

Jan 13, 2026By 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 1

Addresses

Other identifiers 8

Medicare fee-for-service enrollment

Enrolled in CO, KS, TX3 enrollments

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 3

Specialty

Emergency Medicine

Education

Vanderbilt University School of Medicine, 1999

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Usacs Community Emergency Services of Colorado Inc.Group PAC ID 2466711536, 167 clinicians

Vep Hutchinson Emergency Medical Group LLCGroup PAC ID 5092031054, 19 clinicians

Usacs of Colorado IncGroup PAC ID 4981507571, 48 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• St. Catherine Hospital - Garden City Hospital, Garden City, KS, CCN 170023
• Mercy Regional Medical Center Hospital, Durango, CO, CCN 060013

Merit-based Incentive Payment System (MIPS)

Final score

88.65 of 100Reported as group

Quality

86.65

Improvement activities

40

Merit-based Incentive Payment System (MIPS)

Final score

93.85 of 100Reported as group

Quality

91.15

Improvement activities

40

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.

• Usacs Community Emergency Services of Colorado, Inc.

  • Emergency Medicine Physician
  • Arvada, CO
  • NPI 1053824979
  Medicare reassignment Care Compare group NPD
• Usacs of Colorado, Inc

  • Emergency Medicine Physician
  • Littleton, CO
  • NPI 1760415871
  Medicare reassignment Care Compare group NPD
• Vep Hutchinson Emergency Medical Group, LLC

  • Emergency Medicine Physician
  • Hutchinson, KS
  • NPI 1669879110
  Medicare reassignment Care Compare group NPD
• The Fort Defiance Indian Hospital Board, Incorporation

  dba Fort Defiance Indian Hospital

  • General Acute Care Hospital
  • Fort Defiance, AZ
  • NPI 1477876639

  TX

  Medicare reassignment NPD
• Premier Emergency Services, Inc

  • Emergency Medicine Physician
  • Westminster, CO
  • NPI 1457755688
  Medicare reassignment NPD
• Usacs Observation Medicine Services of Colorado Inc.

  • Emergency Medicine Physician
  • Lakewood, CO
  • NPI 1518491232
  Medicare reassignment NPD
• Usacs of Colorado Inc

  • Emergency Medicine Physician
  • Garden City, KS
  • NPI 1760018253
  Medicare reassignment NPD
• Premier Emergency Services, Inc

  • Emergency Medicine Physician
  • Westminster, CO
  • NPI 1962037440
  NPD
• Usacs Community Emergency Services of Colorado, Inc.

  • Emergency Medicine Physician
  • Breckenridge, CO
  • NPI 1003549460
  NPD
• Usacs Observation Medicine Services of Colorado Inc.

  • Critical Care Medicine (Internal Medicine) Physician
  • Durango, CO
  • NPI 1659220663
  NPD
• Usacs of Colorado Inc

  • Emergency Medicine Physician
  • Durango, CO
  • NPI 1235765074
  NPD
• Usacs of Colorado Inc

  • Emergency Medicine Physician
  • Lakewood, CO
  • NPI 1720614217
  NPD

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

• Catholic Health Initiatives Colorado

  dba Mercy Hospital

  • General Acute Care Hospital
  • Durango, CO
  • NPI 1083611644
  Care Compare affiliation
• Catholic Health Initiatives Colorado

  dba MMC DUC Diagnostic Imaging

  • General Acute Care Hospital
  • Durango, CO
  • NPI 1588204010
  Care Compare affiliation
• Catholic Health Initiatives Colorado

  dba Mercy Imaging Center

  • General Acute Care Hospital
  • Durango, CO
  • NPI 1679113104
  Care Compare affiliation
• Catholic Health Initiatives Colorado

  • General Acute Care Hospital
  • Aztec, NM
  • NPI 1770123382
  Care Compare affiliation
• Commonspirit Kansas, Inc.

  dba St. Catherine Hospital - Garden City

  • General Acute Care Hospital
  • Garden City, KS
  • NPI 1659360196
  Care Compare affiliation

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

{
    "created_epoch": "1139356800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1768262400000",
    "number": "1609849991",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 649",
            "city": "FORT DEFIANCE",
            "state": "AZ",
            "postal_code": "865040649",
            "telephone_number": "928-729-8000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "CORNER OF ROUTE N12 AND N7",
            "city": "FORT DEFIANCE",
            "state": "AZ",
            "postal_code": "86504",
            "telephone_number": "928-729-8000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "11600 W 2nd Pl",
            "address_purpose": "LOCATION",
            "city": "Lakewood",
            "state": "CO",
            "postal_code": "802281527",
            "country_code": "US",
            "telephone_number": "720-321-4161",
            "fax_number": "720-321-4165",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "ALTMIN",
        "first_name": "STEPHEN",
        "middle_name": "C",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-02-08",
        "last_updated": "2026-01-13",
        "certification_date": "2026-01-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "CO",
            "license": "39829",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "128190",
            "state": "AZ"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "200389960A",
            "state": "KS"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "PENDING",
            "state": "NE"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "76275329",
            "state": "CO"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "122680100",
            "state": "WY"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "PACIFICARE SECURE HORIZONS",
            "identifier": "20326023101",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "RR MEDICARE",
            "identifier": "P00334740",
            "state": "CO"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "Z3293",
            "state": "UT"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Oluwabukola Akinsiku
• Christina Marie Alexander, RRT
• Jerome Brian Alford, DMD
• Michael M Alkin, R.N.
• All Native Medical Transport
• Luisa Rahell Alvarez, O.D.
• Frank P Ammesmaki, MD
• Joshua G Anderson, FNP
• Marbella Antoun, RN
• Samuel Areh

• Emergency Medicine Physician in Fort Defiance, AZ
• Providers in Fort Defiance, AZ by specialty
• Emergency Medicine Physician in Arizona

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 13, 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.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.