Marta Ludwig, LSW
Social Worker · Bryn Mawr, PA
Marta Ludwig, LSW is a social worker with a practice address in Bryn Mawr, Pennsylvania, and NPI 1033539978, issued on Apr 18, 2014. Check the license (Pennsylvania SW129653, as entered in NPPES) with the Pennsylvania board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Marta Ludwig
- Credential
- LSW
- Primary taxonomy
- Social Worker 104100000X
- License number
- SW129653 PA
Self-reported in NPPES; status is on the state search - Practice location
- 101 N. Merion Ave., Bryn Mawr, PA 19010
- Phone
- (607) 205-4163
- Enumerated
- Apr 18, 2014
- Record last updated
- Apr 18, 2014 (not updated in 12 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest social worker records → All 5,063 in Pennsylvania → Look up another NPI →
Verify Marta Ludwig in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Pennsylvania board licenses this profession
Search for license SW129653Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Marta Ludwig among 5,063 social worker records in Pennsylvania
Marta Ludwig, LSW is one of 5,063 social worker records with a practice address in Pennsylvania. 3% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2014, is newer than 29% of them.
- NPI issued2014 · 29% of these records are older, 67% newer
- In a Medicare fileNo · 3% of these records are
- In the CMS Doctors and Clinicians fileNo · 6% of these records are
- Record last updated2014 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 104100000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
26 social worker records list a practice address in Bryn Mawr
They are 26 of the 1,496 NPPES records with a practice address in Bryn Mawr, and 5,063 social worker records in Pennsylvania. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 5,063 in Pennsylvania → Every provider in Bryn Mawr → Social Worker nationwide →
The 8 social worker records with the nearest ZIP codes
- Laurie Bass, MSS LSWBryn Mawr, PA 190101417225368
- Sara Bressi, PH.D., LSWBryn Mawr, PA 190101548563992
- Kate CornwellBryn Mawr, PA 190101487784740
- Jonathan Eicher, LMSW, MBABryn Mawr, PA 190101902249931
- April Fuller, L.S.W.Bryn Mawr, PA 190101811323280
- Robert Graham, LSWBryn Mawr, PA 190101821418260
- Burgandy Holiday, LSWBryn Mawr, PA 190101073933230
- Kristen Lilla, LCSWBryn Mawr, PA 190101730492729
Common questions
What is Marta Ludwig, LSW's NPI number?
Marta Ludwig, LSW's National Provider Identifier (NPI) is 1033539978, issued on Apr 18, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Marta Ludwig, LSW located?
The NPPES record lists a practice address at 101 N. Merion Ave., Bryn Mawr, PA, 19010. Phone: (607) 205-4163. Providers update this record themselves, so call before visiting.
How can I verify Marta Ludwig, LSW's license?
NPPES lists Pennsylvania license number SW129653, as entered by the provider. Search the Pennsylvania board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.