Active NPI
William L. Sisitki Jr., PA-C
- Physician Assistant
- Lewisburg, PA
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Physician Assistant
- License
- MA052141
- 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
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| 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, FL
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: No
Enrollment records 2
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
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
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Evangelical Medical Services Organization | Current | Accepting new patients | |
| Baptist Health Medical Group Upper Keys, LLC | Current | Accepting new patients | |
| Wellspan Medical Group | Current | Accepting new patients | |
| Baptist Health Medical Group Upper Keys, LLC | Current | Accepting new patients | |
| Wellspan Medical Group | Current | Accepting new patients | |
| Mount Nittany Medical Center Health Services Inc | Current | Accepting new patients | |
| Evangelical Medical Services Organization | Current | 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
- 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.
-
- Gastroenterology Physician
- York, PA
- NPI 1669770004
-
- Surgery Physician
- Lewisburg, PA
- NPI 1205928967
-
- Internal Medicine Physician
- State College, PA
- NPI 1598992554
-
- Specialist
- Tavernier, FL
- NPI 1558553479
-
- Urology Physician
- Lewisburg, PA
- NPI 1083412084
-
- Family Medicine Physician
- Lewisburg, PA
- NPI 1295834984
-
- Pediatric Surgery Physician
- York, PA
- NPI 1104799428
-
- Durable Medical Equipment & Medical Supplies
- Marathon, FL
- NPI 1427774645
-
- Orthopaedic Surgery Physician
- Frederick, MD
- NPI 1316905581
Hospital & facility affiliations 1
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- General Acute Care Hospital
- Lewisburg, PA
- NPI 1124076039
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
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 7, 2026; 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.