Individual provider Active NPI

Mark Jon Ludwig, MA, LMFT, MS, CAADC

  • Marriage & Family Therapist
  • Newtown, PA
National Provider Identifier
1073653598
Registry record updated Jan 4, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Marriage & Family TherapistTaxonomy code 106H00000X
License
MF001215 Issued in PA
Practice address
444 S State St Ste B3
Newtown, PA 18940-1945
Phone
(267) 753-9333
NPI assigned
Feb 7, 2007
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Jan 4, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Marriage & Family TherapistGroup: 193400000X SINGLE SPECIALTY GROUP 106H00000X MF001215 PA Primary

Addresses

Primary practice location

444 S State St Ste B3
Newtown, PA 18940-1945

Mailing address

640 Penn St
Newtown, PA 18940-1802
Phone (267) 753-9333

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Not enrolled
Credentials
Master of Arts, Master of Science

State licenses

LicenseStateTypeSpecialty
MF001215PAMDMarriage & Family Therapist

NPI Registry JSON

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

{
    "created_epoch": "1170806400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1767484800000",
    "number": "1073653598",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "640 PENN ST",
            "city": "NEWTOWN",
            "state": "PA",
            "postal_code": "189401802",
            "telephone_number": "267-753-9333"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "444 S STATE ST STE B3",
            "city": "NEWTOWN",
            "state": "PA",
            "postal_code": "189401945",
            "telephone_number": "267-753-9333"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "LUDWIG",
        "first_name": "MARK",
        "middle_name": "JON",
        "name_prefix": "Mr.",
        "credential": "MA, LMFT, MS, CAADC",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2007-02-07",
        "last_updated": "2026-01-04",
        "certification_date": "2026-01-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "106H00000X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Marriage & Family Therapist",
            "state": "PA",
            "license": "MF001215",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Newtown, PA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 4, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.