Mark Yassa, DO

Primary specialty

Emergency Medicine PhysicianTaxonomy code 207P00000X

License

22350 Issued in FL

Practice address

400 Celebration Pi
Kissimmee, FL 34747

Phone

(407) 303-4000

NPI assigned

Mar 21, 2022

Last updated

Aug 31, 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

Medicare fee-for-service enrollment

Enrolled in FL

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

Emergency Medicine

Education

Other, 2022

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Emergency Medicine Services of FL LLCGroup PAC ID 8426413931, 686 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• HCA Florida Osceola Hospital Hospital, Kissimmee, FL, CCN 100110

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

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.

• Emergency Medicine Services of FL, LLC

  • Emergency Medicine Physician
  • Aventura, FL
  • NPI 1043917180
  Medicare reassignment Care Compare group NPD
• Florida Emergency Physicians Kang and Associates MD LLC

  • Emergency Medical Services (Emergency Medicine) Physician
  • Orlando, FL
  • NPI 1811983752
  Medicare reassignment

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

• Osceola Regional Hospital, Inc.

  dba HCA Florida Osceola Hospital

  • General Acute Care Hospital
  • Kissimmee, FL
  • NPI 1689621450
  Care Compare affiliation

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

{
    "created_epoch": "1647820800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1788134400000",
    "number": "1306595970",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "720 W OAK ST STE 201",
            "city": "KISSIMMEE",
            "state": "FL",
            "postal_code": "347414998"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "400 CELEBRATION PI",
            "city": "KISSIMMEE",
            "state": "FL",
            "postal_code": "34747",
            "telephone_number": "407-303-4000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "YASSA",
        "first_name": "MARK",
        "credential": "DO",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2022-03-21",
        "last_updated": "2026-08-31",
        "certification_date": "2026-08-31",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "FL",
            "license": "22350",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

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• Emergency Medicine Physician in Kissimmee, FL
• Providers in Kissimmee, FL by specialty
• Emergency Medicine Physician in Florida

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 31, 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.