John Marenkovic III

Primary specialty

Physical TherapistTaxonomy code 225100000X

License

308101 Issued in CA

Practice address

120 S Main St
Alturas, CA 96101-4084

Phone

(530) 708-8860

NPI assigned

Aug 5, 2025

Last updated

Aug 5, 2025By 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

Medicare fee-for-service enrollment

Enrolled in CA

Enrollment records 1

Specialty

Physical Therapist in Private Practice

Education

Other, 2025

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Active Marin Physical Therapy IncGroup PAC ID 1052466950, 13 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

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.

• Active Marin Physical Therapy Inc

  dba Cynthia Lewton Dehan

  • Physical Therapy Clinic/Center
  • Larkspur, CA
  • NPI 1184852766
  Medicare reassignment Care Compare group NPD
• Last Frontier Healthcare District

  dba Modoc Medical Center

  • Critical Access Hospital
  • Alturas, CA
  • NPI 1487669032
  NPD (past)

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

{
    "created_epoch": "1754352000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1754352000000",
    "number": "1013891688",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "411 WALLACE ST",
            "city": "KILL DEVIL HILLS",
            "state": "NC",
            "postal_code": "279486835",
            "telephone_number": "330-272-4910"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "120 S MAIN ST",
            "city": "ALTURAS",
            "state": "CA",
            "postal_code": "961014084",
            "telephone_number": "530-708-8860"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MARENKOVIC",
        "first_name": "JOHN",
        "name_suffix": "III",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2025-08-05",
        "last_updated": "2025-08-05",
        "certification_date": "2025-08-05",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "225100000X",
            "taxonomy_group": "",
            "desc": "Physical Therapist",
            "state": "CA",
            "license": "308101",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Last Frontier Healthcare District (Modoc Medical Center)
• Last Frontier Healthcare District (Modoc Medical Center)
• Last Frontier Healthcare District (Modoc Medical Center)
• Last Frontier Healthcare District (Last Frontier Pharmacy)
• Kristin Lybarger, RN
• Edelia Maria Martinez, LVN719829
• MC Davis DDS PC (Crane Mountain Dental- Alturas)
• Sara Jayne McCoy
• Carol Denise McCulley, CERT ADDICTIONS SPEC
• Gabriella McGinness

• Physical Therapist in Alturas, CA
• Providers in Alturas, CA by specialty
• Physical Therapist in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 5, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• 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.