Ryan S Gilliand, PA-C

Primary specialty

Physician AssistantTaxonomy code 363A00000X

License

1848 Issued in TN

Practice address

1510 Gunbarrel Rd Ste 120
Chattanooga, TN 37421-7252

Phone

(423) 697-8585

Fax

(423) 697-8586

NPI assigned

Nov 2, 2006

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 TN

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Physician Assistant

Education

Other, 2001

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Chattanooga Diagnostic Associates LLCGroup PAC ID 9739272519, 27 clinicians

Erlanger HealthGroup PAC ID 1153780226, 504 clinicians

Chattanooga Hamilton County Hospital AuthorityGroup PAC ID 0547179731, 159 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Erlanger Medical Center Hospital, Chattanooga, TN, CCN 440104
• Parkridge Medical Center Hospital, Chattanooga, TN, CCN 440156
• Memorial Healthcare System, Inc Hospital, Chattanooga, TN, CCN 440091

Merit-based Incentive Payment System (MIPS)

Final score

93.78 of 100Reported as apm

Quality

80.38

Promoting interoperability

100

Improvement activities

40

Medicare enrollment (NPD)

Enrolled

Credentials

Physician Assistant

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 and National Provider Directory roles.

• Erlanger Health

  • Internal Medicine Physician
  • Chattanooga, TN
  • NPI 1477256303
  Medicare reassignment Care Compare group NPD
• Chattanooga Hamilton County Hospital Authority

  • Internal Medicine Physician
  • Chattanooga, TN
  • NPI 1154751931
  Medicare reassignment Care Compare group NPD (past)
• Chattanooga Diagnostic Associates LLC

  • Internal Medicine Physician
  • Chattanooga, TN
  • NPI 1679772099
  Medicare reassignment Care Compare group
• Chattanooga Hamilton County Hospital Authority

  • Medicare Defined Swing Bed Hospital Unit
  • Pikeville, TN
  • NPI 1073622007
  NPD
• Chattanooga Hamilton County Hospital Authority

  • Federally Qualified Health Center (FQHC)
  • Chattanooga, TN
  • NPI 1609961549
  NPD
• Erlanger Health

  • Durable Medical Equipment & Medical Supplies
  • Chattanooga, TN
  • NPI 1740073329
  NPD
• Chattanooga Bone & Joint Surgeons, PC

  • Specialist
  • Chattanooga, TN
  • NPI 1760603666
  NPD (past)

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

• Erlanger Health

  • General Acute Care Hospital
  • Chattanooga, TN
  • NPI 1861194086
  Care Compare affiliation
• Memorial Health Care System Inc.

  • General Acute Care Hospital
  • Hixson, TN
  • NPI 1083778633
  Care Compare affiliation
• Memorial Health Care System Inc.

  • General Acute Care Hospital
  • Chattanooga, TN
  • NPI 1255428736
  Care Compare affiliation
• Parkridge Medical Center, Inc.

  • General Acute Care Hospital
  • Chattanooga, TN
  • NPI 1104874684
  Care Compare affiliation

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

{
    "created_epoch": "1162425600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1778716800000",
    "number": "1548348980",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1510 GUNBARREL RD STE 120",
            "city": "CHATTANOOGA",
            "state": "TN",
            "postal_code": "374217252",
            "telephone_number": "423-697-8585",
            "fax_number": "423-697-8586"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1510 GUNBARREL RD STE 120",
            "city": "CHATTANOOGA",
            "state": "TN",
            "postal_code": "374217252",
            "telephone_number": "423-697-8585",
            "fax_number": "423-697-8586"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GILLIAND",
        "first_name": "RYAN",
        "middle_name": "S",
        "credential": "PA-C",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-11-02",
        "last_updated": "2026-05-14",
        "certification_date": "2026-05-14",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "TN",
            "license": "1848",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Cassandra Rene Giles
• Kloey Giles, BCBA
• Wesley Heath Giles, MD
• John D Gillahan, M.ED.
• Heather Nicoe Gilliam, D.O.
• Katherine Anne Gilliard, LPC-MHSP
• Mary Lisa Gilliland, FNP-C
• Misty Gilliland, FNP
• Kimberly Lee Gillum
• Requel Valeria Gilmore

• Physician Assistant in Chattanooga, TN
• Providers in Chattanooga, TN by specialty
• Physician Assistant in Tennessee

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 14, 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.