Nicholas Demetrios Stekas

Primary specialty

Sports Medicine (Orthopaedic Surgery) PhysicianTaxonomy code 207XX0005X

License

A195581 Issued in CA

Practice address

26730 Crown Valley Pkwy Ste 200
Mission Viejo, CA 92691-8001

Phone

(949) 364-2154

NPI assigned

Apr 15, 2019

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

Medicare fee-for-service enrollment

Enrolled in CA

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

Specialty

Orthopedic Surgery

Education

Rutgers New Jersey Medical School, 2019

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Orthopaedic Specialty Institute Medical Group of Orange CountyGroup PAC ID 5395631931, 64 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Providence Mission Hospital Hospital, Mission Viejo, CA, CCN 050567

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Networks

• BSC 65 PLUS INDIVIDUAL MAPD

Interoperability endpoints

• Direct secure messaging: nicholas.stekasmd.p1@direct.osiortho.nextgenshare.com

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Orthopaedic Specialty Institute Medical Group of Orange County

  • Orthopaedic Surgery Physician
  • Orange, CA
  • NPI 1336228832

  Sports Medicine

  Medicare reassignment Care Compare group NPD

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

• Mission Hospital Regional Medical Center

  • General Acute Care Hospital
  • Mission Viejo, CA
  • NPI 1912108002
  Care Compare affiliation
• Mission Hospital Regional Medical Center

  • General Acute Care Hospital
  • Mission Viejo, CA
  • NPI 1992752315
  Care Compare affiliation

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

{
    "created_epoch": "1555286400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1787097600000",
    "number": "1699338715",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "26730 CROWN VALLEY PKWY STE 200",
            "city": "MISSION VIEJO",
            "state": "CA",
            "postal_code": "926918001",
            "telephone_number": "949-364-2154"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "26730 CROWN VALLEY PKWY STE 200",
            "city": "MISSION VIEJO",
            "state": "CA",
            "postal_code": "926918001",
            "telephone_number": "949-364-2154"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "653 Camino De Los Mares Ste 109",
            "address_purpose": "LOCATION",
            "city": "San Clemente",
            "state": "CA",
            "postal_code": "926732808",
            "country_code": "US",
            "telephone_number": "949-661-2423",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "STEKAS",
        "first_name": "NICHOLAS",
        "middle_name": "DEMETRIOS",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2019-04-15",
        "last_updated": "2026-08-19",
        "certification_date": "2026-08-19",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207XX0005X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery, Sports Medicine",
            "state": "CA",
            "license": "A195581",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Justin Anthony Steele
• David Alan Steenblock, D.O.
• Stefanie Jill Fightlin DO Inc
• Zwi Steindler, MD
• Lisa Marie Steinert, LCSW
• Stephen H Barkow MD Inc
• Trevor Stephens
• Sydney Stephenson, DC
• Raymond John Stermer, R.PH., MBA
• Dorina Beth Stern, MFT

• Sports Medicine (Orthopaedic Surgery) Physician in Mission Viejo, CA
• Providers in Mission Viejo, CA by specialty
• Sports Medicine (Orthopaedic Surgery) Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 19, 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.