Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mark J Ludwig, MSW
Social Worker in Somerset, PA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1306850342
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Registry record
Entity type Individual (Type 1)
Name Mark J Ludwig
Credential MSW
Sex Male
Practice address 245 W Race St, Somerset, PA, 15501
Phone (814) 443-4891
Fax (814) 443-4898
Enumeration date Jul 27, 2006
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 1000001750065 | Medicaid | PA | - |
| 1000001750051 | Medicaid | PA | - |
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 is the NPI number for Mark Ludwig?
The National Provider Identifier (NPI) for Mark Ludwig is 1306850342, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mark Ludwig practice?
The practice location on file with NPPES is in Somerset, PA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Bedford Somerset Developmental and Behavioral Health Services Community/Behavioral Health Agency · Somerset, PA NPI 1558367185 Cathy Harriman Social Worker · Somerset, PA NPI 1891714044 Anjaneyulu Karumudi Psychiatry Physician · Somerset, PA NPI 1003836511 Elaine Lahm Professional Counselor · Somerset, PA NPI 1750303731 Karen Lynch Counselor · Somerset, PA NPI 1437173986 Joni Henry Social Worker · Somerset, PA NPI 1457375826 Manda Leonard Professional Counselor · Somerset, PA NPI 1922022466 Julia Marker Professional Counselor · Somerset, PA NPI 1346264884
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.