Individual provider Active NPI

Cassandra Lynn Williamson, PA

  • Physician Assistant
  • Dayton, OH
National Provider Identifier
1457565392
Registry record updated Dec 9, 2019
On this page

Key facts

NPPES NPI Registry
Primary specialty
Physician AssistantTaxonomy code 363A00000X
License
50.002157 Issued in OH
Practice address
4340 Clyo Rd Ste 200
Dayton, OH 45459-7000
Phone
(937) 534-7330
Fax
(937) 395-3682
NPI assigned
May 10, 2007
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Dec 9, 2019

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Physician Assistant 363A00000X 50.002157 OH Primary

Addresses

Primary practice location

4340 Clyo Rd Ste 200
Dayton, OH 45459-7000

Mailing address

4340 Clyo Rd Ste 200
Dayton, OH 45459-7000
Phone (937) 396-2602

Other identifiers 1

IdentifierTypeStateIssuer
0247616MedicaidOH

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address digestivespecialists@directaddress.net Health Information Exchange (HIE)

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in OH
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

Enrollment IDStateProvider typePAC IDDetails
I20171115003362 OH Practitioner - Physician Assistant 4486893518 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Physician Assistant
Education
Other, 2004
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Premier Health Specialists IncGroup PAC ID 5597708594, 576 clinicians
Digestive Specialists IncGroup PAC ID 2062300809, 25 clinicians

Practice addresses (Care Compare)

1 Wyoming St
Dayton, OH 45409-2722
Phone (937) 208-8000

4340 Clyo Rd
Dayton, OH 45459-7000
Phone (937) 396-2602

77 W Eleanor Dr
Springboro, OH 45066-1615
Phone (937) 534-7330

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
95.84 of 100Reported as group
Quality
92.44
Promoting interoperability
100
Improvement activities
40

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Physician Assistant

Practice roles

OrganizationSpecialtyStatusNew patients
Premier Health Specialists Inc Physician Assistant CurrentSince Mar 23, 2026 Accepting new patients
Premier Health Specialists Inc CurrentSince Mar 23, 2026 Accepting new patients
Digestive Specialists Inc CurrentSince Sep 30, 2017 Accepting new patients
Digestive Specialists Inc CurrentSince Sep 30, 2017 Accepting new patients
Lima Memorial Joint Operating Company Past Accepting new patients

Locations

1 Wyoming St
Dayton, OH 45409
Phone (937) 208-2636

4340 Clyo Rd
#200
Dayton, OH 45459
Phone (937) 396-2602

999 Brubaker Dr
Ste 1
Kettering, OH 45429
Phone (937) 350-6700

999 Brubaker Dr
Kettering, OH 45429
Phone (937) 350-6700

77 W Eleanor Dr
Springboro, OH 45066
Phone (937) 913-2080

450 N Hyatt St
Ste 304
Tipp City, OH 45371
Phone (937) 832-4773

Interoperability endpoints

  • Direct secure messaging: digestivespecialists@directaddress.net

Organizations & group practices 5

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.

Hospital & facility affiliations 5

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

NPI Registry JSON

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

{
    "created_epoch": "1178755200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1575849600000",
    "number": "1457565392",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4340 CLYO RD STE 200",
            "city": "DAYTON",
            "state": "OH",
            "postal_code": "454597000",
            "telephone_number": "937-396-2602",
            "fax_number": "937-395-3682"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4340 CLYO RD STE 200",
            "city": "DAYTON",
            "state": "OH",
            "postal_code": "454597000",
            "telephone_number": "937-534-7330",
            "fax_number": "937-395-3682"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WILLIAMSON",
        "first_name": "CASSANDRA",
        "middle_name": "LYNN",
        "credential": "PA",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2007-05-10",
        "last_updated": "2019-12-09",
        "certification_date": "2019-12-09",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "OH",
            "license": "50.002157",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "0247616",
            "state": "OH"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "digestivespecialists@directaddress.net",
            "affiliation": "N",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "CSV",
            "contentTypeDescription": "CSV",
            "address_1": "4340 Clyo Rd Ste 200",
            "city": "Dayton",
            "state": "OH",
            "country_code": "US",
            "postal_code": "454597000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Dayton, OH

Sources for this page

Verify at the official NPI Registry.