Individual provider Active NPI

William L. Sisitki Jr., PA-C

  • Physician Assistant
  • Lewisburg, PA
National Provider Identifier
1831147016
Registry record updated Jan 7, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Physician AssistantTaxonomy code 363A00000X
License
MA052141 Issued in PA
Practice address
25 Lystra Rogers Dr
Lewisburg, PA 17837-8807
Phone
(570) 523-3290
NPI assigned
May 4, 2006
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jan 7, 2026

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 MA052141 PA Primary

Addresses

Primary practice location

25 Lystra Rogers Dr
Lewisburg, PA 17837-8807

Mailing address

601 Memory LN
York, PA 17402-2231

Other practice location 1

457 River Ave
Williamsport, PA 17701-3722
Phone (570) 523-3290

Other practice location 2

3 Hospital Dr Ste 100
Lewisburg, PA 17837-9394
Phone (570) 524-5056

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in PA, FL2 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

Enrollment IDStateProvider typePAC IDDetails
I20051101000915 PA Practitioner - Physician Assistant 3072530765 Reassigns benefits to 3 organizations
I20230105000145 FL Practitioner - Physician Assistant 3072530765 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Physician Assistant
Education
Other, 2000
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Wellspan Medical GroupGroup PAC ID 1951213115, 2,438 clinicians

Practice addresses (Care Compare)

1 Hospital Dr
Lewisburg, PA 17837-9350
Phone (570) 522-4264

25 Monument Rd
York, PA 17403-5073

3 Hospital Dr
Lewisburg, PA 17837-9394

Hospital & facility affiliations

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Evangelical Medical Services Organization CurrentSince Jul 23, 2023 Accepting new patients
Baptist Health Medical Group Upper Keys, LLC CurrentSince Jan 4, 2023 Accepting new patients
Wellspan Medical Group Current Accepting new patients
Baptist Health Medical Group Upper Keys, LLC CurrentSince Jan 4, 2023 Accepting new patients
Wellspan Medical Group CurrentSince Dec 1, 2025 Accepting new patients
Mount Nittany Medical Center Health Services Inc CurrentSince May 11, 2015 Accepting new patients
Evangelical Medical Services Organization CurrentSince Jul 23, 2023 Accepting new patients
Evangelical Medical Services Organization Past Accepting new patients
Fisher & Grandia, M.D., P.a. Past Accepting new patients

Locations

91550 Overseas Hwy
Ste 214
Tavernier, FL 33070
Phone (305) 852-2089

91550 Overseas Hwy
Ste 205
Tavernier, FL 33070
Phone (305) 434-3400

141 Medical Park Ln
Bellefonte, PA 16823
Phone (814) 355-7322

3 Hospital Dr
Ste 206
Lewisburg, PA 17837
Phone (570) 522-9771

3 Hospital Dr
Ste 318
Lewisburg, PA 17837
Phone (570) 522-1007

25 Lystra Rogers Dr
Lewisburg, PA 17837
Phone (570) 523-3290

3 Hospital Dr
Ste 100
Lewisburg, PA 17837
Phone (570) 523-7625

905 University Dr
State College, PA 16801
Phone (814) 237-3122

1850 E Park Ave
Ste 201
State College, PA 16803
Phone (814) 234-8800

457 River Ave
Williamsport, PA 17701
Phone (570) 323-7246

601 Memory Ln
York, PA 17402
Phone (717) 851-6670

25 Monument Rd
Ste 270
York, PA 17403
Phone (717) 741-8250

1600 S George St
York, PA 17403
Phone (717) 848-3615

Interoperability endpoints

  • Direct secure messaging: wsisitki485998@wellspan.direct-ci.com

Organizations & group practices 9

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 1

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": "1146700800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1767744000000",
    "number": "1831147016",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "601 MEMORY LN",
            "city": "YORK",
            "state": "PA",
            "postal_code": "174022231"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "25 LYSTRA ROGERS DR",
            "city": "LEWISBURG",
            "state": "PA",
            "postal_code": "178378807",
            "telephone_number": "570-523-3290"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "457 River Ave",
            "address_purpose": "LOCATION",
            "city": "Williamsport",
            "state": "PA",
            "postal_code": "177013722",
            "country_code": "US",
            "telephone_number": "570-523-3290",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "3 Hospital Dr Ste 100",
            "address_purpose": "LOCATION",
            "city": "Lewisburg",
            "state": "PA",
            "postal_code": "178379394",
            "country_code": "US",
            "telephone_number": "570-524-5056",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "SISITKI",
        "first_name": "WILLIAM",
        "middle_name": "L.",
        "name_prefix": "Mr.",
        "name_suffix": "Jr.",
        "credential": "PA-C",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-05-04",
        "last_updated": "2026-01-07",
        "certification_date": "2026-01-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "PA",
            "license": "MA052141",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Lewisburg, PA

Sources for this page

Verify at the official NPI Registry.