Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mr. John L Biesecker, CSW
Clinical Social Worker in York, PA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1154348506
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Registry record
Entity type Individual (Type 1)
Name Mr. John L Biesecker
Credential CSW
Sex Male
Practice address 3995 E Market St, York, PA, 17402
Phone (717) 757-1227
Fax (717) 757-1353
Enumeration date Jul 15, 2006
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License CW014560 (PA) Primary
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
What specialty is John Biesecker?
John Biesecker is registered in NPPES with the primary taxonomy of Clinical Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Other providers at this practice address
Browse all → Jane Kieber Social Worker · York, PA NPI 1447277108 Anne Helsabeck Clinical Social Worker · York, PA NPI 1841218542 Family-Child Resources Inc Speech-Language Pathologist · York, PA NPI 1982711982 Lisa Swartz Pediatric Physical Therapist · York, PA NPI 1407943723 Lisa Hoffman Pediatric Occupational Therapist · York, PA NPI 1053409524 Carmela Champ Speech-Language Pathologist · York, PA NPI 1114016490 Cheryl Rohrbaugh Registered Nurse · York, PA NPI 1154411296 Michelle Baldwin Physical Therapist · York, PA NPI 1154411015
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.