Cassidi Ann Hesdon I, PA-C

Primary specialty

Physician AssistantTaxonomy code 363A00000X

License

2025011376 Issued in MO

Practice address

15740 S Outer 40 Rd
Chesterfield, MO 63017-2004

Phone

(636) 237-4700

Fax

(314) 364-6350

NPI assigned

Aug 7, 2018

Sex

Female

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Other names 1

• Cassidi Ann Udy Former name

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in PA, VA, DC, MO4 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 4

Specialty

Physician Assistant

Education

Other, 2018

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Practice addresses (Care Compare)

Hospital & facility affiliations

• Mercy Hospital Joplin Hospital, Joplin, MO, CCN 260001

Medicare enrollment (NPD)

Enrolled

Credentials

Physician Assistant

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: vaexchange@patientfirstclinics.com

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.

• Mercy Aco Clinical Services Inc

  • Neurology Physician
  • Chesterfield, MO
  • NPI 1063965093
  Medicare reassignment NPD
• Patient First Richmond Medical Group PLLC

  • Family Medicine Physician
  • Glen Allen, VA
  • NPI 1689603748

  DC

  Medicare reassignment NPD
• Titusville Area Hospital

  • Rural Health Clinic/Center
  • Titusville, PA
  • NPI 1316471212
  Medicare reassignment NPD
• Premier Acute Care Services LLC

  • Urgent Care Clinic/Center
  • Ruther Glen, VA
  • NPI 1174021752
  Medicare reassignment
• Patient First Richmond Medical Group PLLC

  • Urgent Care Clinic/Center
  • Fairfax, VA
  • NPI 1588018881
  NPD
• Primary Care Services

  • Internal Medicine Physician
  • Meadville, PA
  • NPI 1962804955
  NPD (past)

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

• Mercy Hospital Joplin

  • General Acute Care Hospital
  • Joplin, MO
  • NPI 1700112745
  Care Compare affiliation

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

{
    "created_epoch": "1533600000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1762128000000",
    "number": "1629557111",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "15740 S OUTER 40 RD",
            "city": "CHESTERFIELD",
            "state": "MO",
            "postal_code": "630172004",
            "telephone_number": "636-237-4700",
            "fax_number": "314-364-6350"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "15740 S OUTER 40 RD",
            "city": "CHESTERFIELD",
            "state": "MO",
            "postal_code": "630172004",
            "telephone_number": "636-237-4700",
            "fax_number": "314-364-6350"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HESDON",
        "first_name": "CASSIDI",
        "middle_name": "ANN",
        "name_suffix": "I",
        "credential": "PA-C",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2018-08-07",
        "last_updated": "2025-11-03",
        "certification_date": "2025-11-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "MO",
            "license": "2025011376",
            "primary": true
        },
        {
            "code": "363AM0700X",
            "taxonomy_group": "",
            "desc": "Physician Assistant, Medical",
            "state": "PA",
            "license": "MA059985",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "VAExchange@patientfirstclinics.com",
            "affiliation": "N",
            "endpointDescription": "email",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "address_1": "3031 Plank Rd",
            "city": "Fredericksburg",
            "state": "VA",
            "country_code": "US",
            "postal_code": "224014951",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": [
        {
            "first_name": "CASSIDI",
            "last_name": "UDY",
            "middle_name": "ANN",
            "credential": "PA",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

• Alexa Marie Hernandez
• Leaann M Herring, STUDENT
• Mikaela Herschelman, MT, OTR/L
• Tara Nicole Hertweck
• Katherine Elizabeth Herzog, M.D.
• Ryan Hewkin, DC
• Hi Tech Diagnostic LLC
• Hi Tech Diagnostics LLC
• Sabrina Rae Hickel, LPC
• Stephanie Marie Hicks, D.C.

• Physician Assistant in Chesterfield, MO
• Providers in Chesterfield, MO by specialty
• Physician Assistant in Missouri

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 3, 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.