Lillia Rachel Siegel, PA-C

Primary specialty

Physician AssistantTaxonomy code 363A00000X

License

9731 Issued in AZ

Practice address

875 S Dobson Rd
Chandler, AZ 85224-5710

Phone

(480) 899-9800

Fax

(480) 899-2994

NPI assigned

Mar 15, 2023

Sex

Female

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 AZ

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, 2023

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Mountain Park Health CenterGroup PAC ID 8325949647, shared by 11 NPIs, 117 clinicians

Southeast Valley Gastroenterology Consultants, P.C.Group PAC ID 9436142270, 32 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Physician Assistant

State licenses

Practice roles

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.

• Southeast Valley Gastroenterology Consultants, P.C.

  • Gastroenterology Physician
  • Chandler, AZ
  • NPI 1104861905
  Medicare reassignment Care Compare group
• Saint Paul Place Specialists, Inc.

  • Physical Therapist
  • Baltimore, MD
  • NPI 1346292422
  NPD (past)

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

{
    "created_epoch": "1678838400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1763510400000",
    "number": "1457052565",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "875 S DOBSON RD",
            "city": "CHANDLER",
            "state": "AZ",
            "postal_code": "852245710",
            "telephone_number": "480-899-9800",
            "fax_number": "480-899-2994"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "875 S DOBSON RD",
            "city": "CHANDLER",
            "state": "AZ",
            "postal_code": "852245710",
            "telephone_number": "480-899-9800",
            "fax_number": "480-899-2994"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SIEGEL",
        "first_name": "LILLIA",
        "middle_name": "RACHEL",
        "credential": "PA-C",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2023-03-15",
        "last_updated": "2025-11-19",
        "certification_date": "2025-11-19",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "AZ",
            "license": "9731",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Cheyenne Sides
• Scott R. Siebel, M.D.
• Mallory Siebers
• James R Siefer, DO
• Cassandra Skye Sieg, PHARMD
• Wade J Siegel, D.C.
• Madison Rae Siegenthaler, PA-C
• Ethan Siegler, BCBA
• Brett Inghram Siegrist, MD
• Sierra Family Dentistry

• Physician Assistant in Chandler, AZ
• Providers in Chandler, AZ by specialty
• Physician Assistant in Arizona

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