Sydney Guenther, FNP-C

Primary specialty

Family Nurse PractitionerTaxonomy code 363LF0000X

License

228428 Issued in AZ

Practice address

20751 W Market St
Buckeye, AZ 85396-7893

Phone

(623) 463-5000

NPI assigned

Aug 3, 2022

Last updated

Sep 10, 2025By the provider in NPPES

Sex

Female

Sole proprietor

Yes

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Addresses

Other names 1

• Sydney Allen Former name

Medicare fee-for-service enrollment

Enrolled in NE, AZ2 enrollments

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 2

Specialty

Nurse Practitioner

Education

Other, 2022

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Banner Primary Care Physicians Arizona LLCGroup PAC ID 6406020155, 236 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Nurse Practitioner

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: sydney.guenther@avera.sdhealthlink.net

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.

• Banner Primary Care Physicians Arizona LLC

  • Primary Care Clinic/Center
  • Phoenix, AZ
  • NPI 1659640902
  Medicare reassignment Care Compare group NPD
• Sacred Heart Health Services

  dba Avera Creighton Clinic

  • Family Medicine Physician
  • Creighton, NE
  • NPI 1083918171
  Medicare reassignment NPD
• Sacred Heart Health Services

  dba Avera Creighton Hospital

  • Critical Access Hospital
  • Creighton, NE
  • NPI 1225332471
  Medicare reassignment NPD
• Sacred Heart Health Services

  dba Avera Medical Group Podiatry Yankton

  • Foot & Ankle Surgery Podiatrist
  • Yankton, SD
  • NPI 1508093147

  NE

  Medicare reassignment NPD
• Banner Primary Care Physicians Arizona LLC

  • Clinical Medical Laboratory
  • Peoria, AZ
  • NPI 1649544362
  NPD
• Banner Primary Care Physicians Arizona LLC

  • Primary Care Clinic/Center
  • Phoenix, AZ
  • NPI 1790306066
  NPD
• Sacred Heart Health Services

  • General Practice Physician
  • Yankton, SD
  • NPI 1205703659
  NPD
• Sacred Heart Health Services

  dba Avera Medical Group Verdigre

  • Rural Health Clinic/Center
  • Verdigre, NE
  • NPI 1376847541
  NPD
• Sacred Heart Health Services

  dba Avera Sacred Heart Hospital

  • Rural Acute Care Hospital
  • Yankton, SD
  • NPI 1770693954
  NPD
• Banner Primary Care Physicians Arizona LLC

  • Primary Care Clinic/Center
  • Phoenix, AZ
  • NPI 1417238908
  NPD (past)

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

{
    "created_epoch": "1659484800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757462400000",
    "number": "1093442725",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "20751 W MARKET ST",
            "city": "BUCKEYE",
            "state": "AZ",
            "postal_code": "853967893"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "20751 W MARKET ST",
            "city": "BUCKEYE",
            "state": "AZ",
            "postal_code": "853967893",
            "telephone_number": "623-463-5000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GUENTHER",
        "first_name": "SYDNEY",
        "credential": "FNP-C",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2022-08-03",
        "last_updated": "2025-09-10",
        "certification_date": "2025-09-10",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "AZ",
            "license": "228428",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "SYDNEY",
            "last_name": "ALLEN",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

• Kendra Alanna Gort, PSY.D.
• Nancy Gray
• Raquel Alicia Green, DDS
• Joyce Faith Gross, LMSW
• Growing Edges LLC
• Jennifer Guess, PA-C
• Ricki Elizabeth Haab, PT, DPT
• Marci Lynn Hageman, FNP
• Brooklyn Rae Hagerman, D.M.D.
• Milkias Hailu

• Family Nurse Practitioner in Buckeye, AZ
• Providers in Buckeye, AZ by specialty
• Family Nurse Practitioner in Arizona

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 10, 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.