NPIMap

Individual provider Active NPI

Neihl Williamson, PA-C

  • Physician Assistant
  • Williamsport, PA
National Provider Identifier
1508237223
Registry record updated Sep 9, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Physician AssistantTaxonomy code 363A00000X
License
MA057897 Issued in PA
Practice address
1205 Grampian Blvd Ste 3C
Williamsport, PA 17701-1970
Phone
(703) 207-8005
Fax
(570) 320-7801
NPI assigned
Oct 8, 2015
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 9, 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 MA057897 PA Primary

Addresses

Primary practice location

1205 Grampian Blvd Ste 3C
Williamsport, PA 17701-1970

Mailing address

1201 Grampian Blvd
Williamsport, PA 17701-1900

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address nwilliamson269974@upmc.direct-ci.com

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in PA
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20151029000867 PA Practitioner - Physician Assistant 4880903046 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Physician Assistant
Education
Other, 2015
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Susquehanna Physician ServicesGroup PAC ID 2264336460, 611 clinicians
Phoenix Rehabilitation and Health Services IncGroup PAC ID 3476464298, 2,775 clinicians

Practice addresses (Care Compare)

1205 Grampian Blvd
Suite 3C
Williamsport, PA 17701-1970
Phone (570) 320-7800

2000 Westinghouse Dr
Cranberry Township, PA 16066-5238

Hospital & facility affiliations

  • Upmc Home Healthcare Home health agency, Williamsport, PA, CCN 397006
  • Upmc Williamsport Hospital, Williamsport, PA, CCN 390045

Merit-based Incentive Payment System (MIPS)

Final score
81.06 of 100Reported as group
Quality
62.07
Promoting interoperability
100
Improvement activities
40
Cost
74.81

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Susquehanna Physician Services CurrentSince Aug 1, 2018 Accepting new patients
Susquehanna Physician Services CurrentSince Aug 1, 2018 Accepting new patients
Susquehanna Physician Services Physician Assistant CurrentSince Jul 1, 2024 Accepting new patients

Locations

700 High St
Williamsport, PA 17701
Phone (570) 321-1000

1205 Grampian Blvd
Ste 3C
Williamsport, PA 17701
Phone (570) 320-7800

1201 Grampian Blvd
Ste 2F
Williamsport, PA 17701
Phone (570) 320-7598

1201 Grampian Blvd
Williamsport, PA 17701
Phone (570) 326-8723

Interoperability endpoints

  • Direct secure messaging: nwilliamson269974@upmc.direct-ci.com
  • Direct secure messaging: neihlwilliamson@toc.allscriptsdirect.net
  • Direct secure messaging: neihl.a.williamson@upmcdirect.com

Organizations & group practices 6

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 8

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": "1444262400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1788912000000",
    "number": "1508237223",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1201 GRAMPIAN BLVD",
            "city": "WILLIAMSPORT",
            "state": "PA",
            "postal_code": "177011900"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1205 GRAMPIAN BLVD STE 3C",
            "city": "WILLIAMSPORT",
            "state": "PA",
            "postal_code": "177011970",
            "telephone_number": "703-207-8005",
            "fax_number": "570-320-7801"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WILLIAMSON",
        "first_name": "NEIHL",
        "name_prefix": "Mr.",
        "credential": "PA-C",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2015-10-08",
        "last_updated": "2026-09-09",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "PA",
            "license": "MA057897",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "nwilliamson269974@upmc.direct-ci.com",
            "affiliation": "N",
            "address_1": "600 Grant St",
            "address_2": "Floor 58",
            "city": "Pittsburgh",
            "state": "PA",
            "country_code": "US",
            "postal_code": "152192702",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Williamsport, PA

Sources for this page

Verify at the official NPI Registry.