Tri-County Oral-Facial Surgeons, PLLC

Primary specialty

Oral and Maxillofacial Surgery (Dentist)Taxonomy code 1223S0112X

Legal business name

TRI-COUNTY ORAL-FACIAL SURGEONS, PLLC

Practice address

200 W Beaver Ave
Suite 100
State College, PA 16801

Phone

(814) 238-0587

Fax

(814) 238-3840

NPI assigned

Jun 2, 2006

Last updated

Jan 16, 2026By the provider in NPPES

Organization subpart

No

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

Authorized official

Name

Dr. Stephen L Engroff, MD DDSNPI 1366474314

Title

Owner

Phone

(814) 238-0587

Specialties & licenses 2

Addresses

Other identifiers 2

Medicare fee-for-service enrollment

Enrolled in PA

Enrollment records 1

Locations

Practitioners 3

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

• Stephen L Engroff, MD DDS

  • Oral and Maxillofacial Surgery (Dentist)
  • State College, PA
  • NPI 1366474314

  Oral and Maxillofacial Pathology

  Medicare reassignment Care Compare group NPD Authorized official
• Jeremy Joseph Hanlon, DMD

  • Oral and Maxillofacial Surgery (Dentist)
  • State College, PA
  • NPI 1881949766
  Medicare reassignment Care Compare group NPD
• Christopher F Viozzi, M.D., DDS

  • Oral & Maxillofacial Surgery (D.M.D.)
  • Rochester, MN
  • NPI 1548234578
  NPD (past)

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

{
    "created_epoch": "1149206400000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1768521600000",
    "number": "1265479638",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "200 W BEAVER AVE STE 100",
            "city": "STATE COLLEGE",
            "state": "PA",
            "postal_code": "168014820",
            "telephone_number": "814-238-0587",
            "fax_number": "814-238-3840"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "200 W BEAVER AVE",
            "address_2": "SUITE 100",
            "city": "STATE COLLEGE",
            "state": "PA",
            "postal_code": "16801",
            "telephone_number": "814-238-0587",
            "fax_number": "814-238-3840"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "TRI-COUNTY ORAL-FACIAL SURGEONS, PLLC",
        "organizational_subpart": "NO",
        "enumeration_date": "2006-06-02",
        "last_updated": "2026-01-16",
        "certification_date": "2026-01-16",
        "status": "A",
        "authorized_official_last_name": "ENGROFF",
        "authorized_official_first_name": "STEPHEN",
        "authorized_official_middle_name": "L",
        "authorized_official_title_or_position": "OWNER",
        "authorized_official_telephone_number": "814-238-0587",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "MD DDS"
    },
    "taxonomies": [
        {
            "code": "1223P0106X",
            "taxonomy_group": "",
            "desc": "Dentist, Oral and Maxillofacial Pathology",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "1223S0112X",
            "taxonomy_group": "",
            "desc": "Dentist, Oral and Maxillofacial Surgery",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "HIGHMARK",
            "identifier": "118029",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "GEISINGER HEALTH PLAN",
            "identifier": "1226",
            "state": null
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Susan C. Trainor, CRNP
• Andrew Thien Tran, DDS
• Transformation Counseling LLC (Transformation Counseling)
• Katelyn Traxler
• Breanna Tressler
• Eric Paul Tricou
• Jenna Diane Trill, PHARMD
• Danielle F Trimarco, LCSW
• Laurie M Troup, MOT, OTR/L
• Deborah Ann Trowbridge

• Oral and Maxillofacial Surgery (Dentist) in State College, PA
• Providers in State College, PA by specialty
• Oral and Maxillofacial Surgery (Dentist) in Pennsylvania

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 16, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.