NPPES file of Aug 9, 2026

Mark Ryan Ferguson, LISW

Clinical Social Worker · Athens, OH

Mark Ryan Ferguson, LISW is a clinical social worker with a practice address in Athens, Ohio, and NPI 1609542760, issued on Aug 19, 2021. Check the license (Ohio I.2405863, as entered in NPPES) with the Ohio board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1609542760
Name
Mark Ryan Ferguson
Credential
LISW
Primary taxonomy
Clinical Social Worker 1041C0700X
License number
I.2405863 OH
Self-reported in NPPES; status is on the state search
Practice location
141 Columbus RD, Athens, OH 45701
Phone
(740) 249-4318
Enumerated
Aug 19, 2021
Record last updated
Apr 18, 2025
Fax
(740) 249-4330
Medicare enrollment
Enrolled (PECOS I20241011002904); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest clinical social worker records → All 9,815 in Ohio → Look up another NPI →

Also registered at 141 Columbus RD

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Emmanuel Adarkwa, CTCounselor1700591088
  2. Diamond AllenSocial Worker1114753878
  3. Anaise AlyerimeSocial Worker1659183168
  4. Chantal Andrews, QMHS 3Case Manager/Care Coordinator1184371098
  5. Cortney BeymerSocial Worker1639905490
  6. Elizabeth CastoCounselor1427883669

Verify Mark Ryan Ferguson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Ohio board licenses this profession
    Search for license I.2405863    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Ohio license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Psychological And Behavioral Consultants LLCCincinnati, OH

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Mark Ryan Ferguson among 9,815 clinical social worker records in Ohio

Mark Ryan Ferguson, 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 2021, is newer than 82% of them.

  • NPI issued2021 · 82% of these records are older, 13% newer
  • In a Medicare fileYes · 13% of these records are
  • In the CMS Doctors and Clinicians fileYes · 19% of these records are
  • Graduated2024 · median 2011 among the 1,903 with a school on file
  • Record last updated2025 · 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

  1. Carole Alder, MSWAthens, OH 457011508900903
  2. Jennifer Ault, MSW, LISWAthens, OH 457011962618967
  3. Sharon Burt, LISWAthens, OH 457011528105509
  4. Michelle Corwin, LISWAthens, OH 457011467651836
  5. Melody Dunaway, LSWAthens, OH 457011831226166
  6. Tamala Gdowski, LISWAthens, OH 457011487955720
  7. Martin Hammar, LISWAthens, OH 457011093850034
  8. Lori Harris-Brown, LISWAthens, OH 457011518989870

Common questions

What is Mark Ryan Ferguson, LISW's NPI number?

Mark Ryan Ferguson, LISW's National Provider Identifier (NPI) is 1609542760, issued on Aug 19, 2021. An NPI identifies a provider in billing; it is not a license.

Where is Mark Ryan Ferguson, LISW located?

The NPPES record lists a practice address at 141 Columbus RD, Athens, OH, 45701. Phone: (740) 249-4318. Providers update this record themselves, so call before visiting.

How can I verify Mark Ryan Ferguson, LISW's license?

NPPES lists Ohio license number I.2405863, 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.