NPPES file of Aug 9, 2026

Mary T. Irwin, LSW

Social Worker · Portsmouth, OH

Mary T. Irwin, LSW is a social worker with a practice address in Portsmouth, Ohio, and NPI 1174956577, issued on Aug 21, 2013. Check the license (Ohio 0900570, as entered in NPPES) with the Ohio board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

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

NPPES recordNPPES file of Aug 9, 2026
1174956577
Name
Mary T. Irwin
Credential
LSW
Primary taxonomy
Social Worker 104100000X
License number
0900570 OH
Self-reported in NPPES; status is on the state search
Practice location
411 Court St, Portsmouth, OH 45662
Phone
(740) 354-6685
Enumerated
Aug 21, 2013
Record last updated
Aug 21, 2013 (not updated in 13 years: call before relying on the address or phone)
Fax
(740) 354-5061
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest social worker records → All 11,239 in Ohio → Look up another NPI →

Also registered at 411 Court St

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

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  2. Michael AdamsAddiction (Substance Use Disorder) Counselor1790329225
  3. Shilyn AdamsPeer Specialist1598482101
  4. Dallas Adamson, CDCAAddiction (Substance Use Disorder) Counselor1801525290
  5. Evan AdkinsAddiction (Substance Use Disorder) Counselor1417558818
  6. Ryan AdkinsAddiction (Substance Use Disorder) Counselor1568018422

Verify Mary T. Irwin 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 0900570    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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Mary T. Irwin among 11,239 social worker records in Ohio

Mary T. Irwin, LSW is one of 11,239 social worker records with a practice address in Ohio. 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 2013, is newer than 14% of them.

  • NPI issued2013 · 14% of these records are older, 84% newer
  • In a Medicare fileNo · 3% of these records are
  • In the CMS Doctors and Clinicians fileNo · 4% of these records are
  • Record last updated2013 · 48% 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 Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

80 social worker records list a practice address in Portsmouth

They are 80 of the 1,937 NPPES records with a practice address in Portsmouth, and 11,239 social worker records in Ohio. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 11,239 in Ohio → Every provider in Portsmouth → Social Worker nationwide →

The 8 social worker records with the nearest ZIP codes

  1. Anita Bowman, LISWPortsmouth, OH 456621427116250
  2. Elaine Conrad, LISWPortsmouth, OH 456621578989547
  3. Catherine Fancher, LSWPortsmouth, OH 456621346424082
  4. Amy Gregory, LICDC, LSWPortsmouth, OH 456621578922845
  5. Laura HallPortsmouth, OH 456621356615769
  6. Steven Hartlage, LSWPortsmouth, OH 456621679756647
  7. Brandy HowlandPortsmouth, OH 456621801255567
  8. Kathryn Lewis, LSWPortsmouth, OH 456621790969434

Common questions

What is Mary T. Irwin, LSW's NPI number?

Mary T. Irwin, LSW's National Provider Identifier (NPI) is 1174956577, issued on Aug 21, 2013. An NPI identifies a provider in billing; it is not a license.

Where is Mary T. Irwin, LSW located?

The NPPES record lists a practice address at 411 Court St, Portsmouth, OH, 45662. Phone: (740) 354-6685. Providers update this record themselves, so call before visiting.

How can I verify Mary T. Irwin, LSW's license?

NPPES lists Ohio license number 0900570, 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. 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.