Mohamad-Ammar F Ayass, M.D.

Primary specialty

Pulmonary Disease PhysicianTaxonomy code 207RP1001X

License

L2116 Issued in TX

Practice address

3021 Green Meadow Dr
San Angelo, TX 76904-6975

Phone

(325) 223-1800

Fax

(325) 223-1810

NPI assigned

Jun 3, 2006

Last updated

Nov 17, 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

Other identifiers 4

Medicare fee-for-service enrollment

Enrolled in TX

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

Pulmonary DiseaseAlso: Internal Medicine

Education

Other, 1988

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Practice addresses (Care Compare)

Hospital & facility affiliations

• Shannon Medical Center Hospital, San Angelo, TX, CCN 450571
• Hendrick Medical Center Brownwood Hospital, Brownwood, TX, CCN 450587

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

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.

• Ayass Lung Clinic, PLLC

  • Pulmonary Disease Physician
  • Frisco, TX
  • NPI 1487768172
  Medicare reassignment NPD Authorized official
• Ayass Lung Clinic, PLLC

  dba Ayass Lab

  • Clinical Medical Laboratory
  • Frisco, TX
  • NPI 1417450537
  NPD Authorized official
• Shannon Clinic

  • Family Medicine Physician
  • San Angelo, TX
  • NPI 1770587149
  NPD (past)
• Amerirad Inc

  • Diagnostic Radiology Physician
  • Morgantown, WV
  • NPI 1790739985
  NPD (past)

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

• Hendrick Medical Center Brownwood

  • General Acute Care Hospital
  • Brownwood, TX
  • NPI 1184233785
  Care Compare affiliation
• Shannon Medical Center

  • General Acute Care Hospital
  • San Angelo, TX
  • NPI 1992707228
  Care Compare affiliation

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

{
    "created_epoch": "1149292800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1763337600000",
    "number": "1821036559",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "8501 WADE BLVD STE 750",
            "city": "FRISCO",
            "state": "TX",
            "postal_code": "750346437",
            "telephone_number": "972-668-6005",
            "fax_number": "972-635-4440"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3021 GREEN MEADOW DR",
            "city": "SAN ANGELO",
            "state": "TX",
            "postal_code": "769046975",
            "telephone_number": "325-223-1800",
            "fax_number": "325-223-1810"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "AYASS",
        "first_name": "MOHAMAD-AMMAR",
        "middle_name": "F",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-06-03",
        "last_updated": "2025-11-17",
        "certification_date": "2025-11-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RP1001X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Pulmonary Disease",
            "state": "TX",
            "license": "L2116",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "145403503",
            "state": "TX"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BC/BS PIN",
            "identifier": "8P5490",
            "state": "TX"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BCBS GROUP #",
            "identifier": "0027LW",
            "state": "TX"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "168067001",
            "state": "TX"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Anna M Augustin, FNP
• Jackline Auka
• Molly Rydan Avila
• Sydney Axton, RBT
• Omar Ayala, M.D.
• Carmina Margarita Aybar Rodriguez, M.D.
• Lance Ayers, PT
• Alejandra C Ayestaran Cassani, MD
• Oyebanji Olayiwola Babalola, RPH
• Luz'Ce Raquel Baca Anchondo, PT, DPT

• Pulmonary Disease Physician in San Angelo, TX
• Providers in San Angelo, TX by specialty
• Pulmonary Disease Physician in Texas

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 17, 2025; 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.