Martin F. Hammar, LISW
Clinical Social Worker · Athens, OH
Martin F. Hammar, LISW is a clinical social worker with a practice address in Athens, Ohio, and NPI 1093850034, issued on Feb 20, 2007. Check the license (Ohio I.1500455, as entered in NPPES) with the Ohio board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Martin F. Hammar
- Credential
- LISW
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License number
- I.1500455 OH
Self-reported in NPPES; status is on the state search - Practice location
- 90 Hospital Dr, Athens, OH 45701
- Phone
- (740) 593-3682
- Enumerated
- Feb 20, 2007
- Record last updated
- Nov 12, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (740) 594-5642
- Medicare enrollment
- Enrolled (PECOS I20150609002288); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest clinical social worker records → All 9,815 in Ohio → Look up another NPI →
Also registered at 90 Hospital Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Martin F. Hammar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Ohio board licenses this profession
Search for license I.1500455Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Hocking Valley Medical Group, Inc.Logan, OH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Martin F. Hammar among 9,815 clinical social worker records in Ohio
Martin F. Hammar, LISW is one of 9,815 clinical social worker records with a practice address in Ohio. 13% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 11% of them.
- NPI issued2007 · 11% of these records are older, 81% newer
- In a Medicare fileYes · 13% of these records are
- In the CMS Doctors and Clinicians fileYes · 19% of these records are
- Graduated2013 · median 2011 among the 1,903 with a school on file
- Record last updated2020 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1041C0700X and a Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
77 clinical social worker records list a practice address in Athens
They are 77 of the 2,613 NPPES records with a practice address in Athens, and 9,815 clinical social worker records in Ohio.
All 9,815 in Ohio → Every provider in Athens → Clinical Social Worker nationwide →
The 8 clinical social worker records with the nearest ZIP codes
- Carole Alder, MSWAthens, OH 457011508900903
- Jennifer Ault, MSW, LISWAthens, OH 457011962618967
- Sharon Burt, LISWAthens, OH 457011528105509
- Michelle Corwin, LISWAthens, OH 457011467651836
- Melody Dunaway, LSWAthens, OH 457011831226166
- Tamala Gdowski, LISWAthens, OH 457011487955720
- Lori Harris-Brown, LISWAthens, OH 457011518989870
- Lisa Laughton, LISWAthens, OH 457011134485469
Common questions
What is Martin F. Hammar, LISW's NPI number?
Martin F. Hammar, LISW's National Provider Identifier (NPI) is 1093850034, issued on Feb 20, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Martin F. Hammar, LISW located?
The NPPES record lists a practice address at 90 Hospital Dr, Athens, OH, 45701. Phone: (740) 593-3682. Providers update this record themselves, so call before visiting.
How can I verify Martin F. Hammar, LISW's license?
NPPES lists Ohio license number I.1500455, as entered by the provider. Search the Ohio 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. Medicare files from data.cms.gov. 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.