NPPES file of Aug 9, 2026

William Joseph Demeo, PH.D.

Clinical Social Worker · Washington, DC

William Joseph Demeo, PH.D. is a clinical social worker with a practice address in Washington, District of Columbia, and NPI 1235178807, issued on Jun 6, 2006. Check the license (District of Columbia LC300040, as entered in NPPES) with the District of Columbia 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
1235178807
Name
William Joseph Demeo
Credential
PH.D.
Primary taxonomy
Clinical Social Worker 1041C0700X
License number
LC300040 DC
Self-reported in NPPES; status is on the state search
Practice location
5225 Connecticut Ave NW, Washington, DC 20015
Phone
(202) 363-2550
Enumerated
Jun 6, 2006
Record last updated
Jul 13, 2026
Fax
(202) 363-2550
Medicare enrollment
Enrolled (PECOS I20080421000473); 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 1,921 in District of Columbia → Look up another NPI →

Also registered at 5225 Connecticut Ave NW

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

  1. Laurence Allen, MDPsychiatry Physician1972728350
  2. Joseph Autry, M.D.Specialist1689670739
  3. Nancy Colletta, PH.D.Specialist1407027253
  4. Vincent Greenwood, PHDClinical Psychologist1306028170
  5. Deborah Holzer, MSWClinical Social Worker1285852186
  6. Paula Howie, LPC, ATR-BCCounselor1104030386

Verify William Joseph Demeo in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich District of Columbia board licenses this profession
    Search for license LC300040    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 District of Columbia 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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William Joseph Demeo among 1,921 clinical social worker records in District of Columbia

William Joseph Demeo, PH.D. is one of 1,921 clinical social worker records with a practice address in District of Columbia. 6% 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 2006, is newer than under 1% of them.

  • NPI issued2006 · under 1% of these records are older, 91% newer
  • In a Medicare fileNo · 6% of these records are
  • In the CMS Doctors and Clinicians fileYes · 10% of these records are
  • Graduated1973 · median 2011 among the 182 with a school on file
  • Record last updated2026 · 64% 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 District of Columbia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

1,912 clinical social worker records list a practice address in Washington

They are 1,912 of the 45,857 NPPES records with a practice address in Washington, and 1,921 clinical social worker records in District of Columbia. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 1,921 in District of Columbia → Every provider in Washington → Clinical Social Worker nationwide →

The 8 clinical social worker records with the nearest ZIP codes

  1. Katharine Bethell, M.S.W.Washington, DC 200151912040536
  2. Janice Edwards, DSW DOCTORATE OF SOCWashington, DC 200151457323172
  3. Maryann Foster, LCSW-CWashington, DC 200151083602460
  4. Jewel Green, LCSW, LICSW, LCSW-CWashington, DC 200151922173228
  5. Christina Hall, LICSW, LCSW-CWashington, DC 200151689798977
  6. Deborah Holzer, MSWWashington, DC 200151285852186
  7. Jennifer Kogan, LICSWWashington, DC 200151992831150
  8. Christine Lynn, L I C S WWashington, DC 200151386793727

Common questions

What is William Joseph Demeo, PH.D.'s NPI number?

William Joseph Demeo, PH.D.'s National Provider Identifier (NPI) is 1235178807, issued on Jun 6, 2006. An NPI identifies a provider in billing; it is not a license.

Where is William Joseph Demeo, PH.D. located?

The NPPES record lists a practice address at 5225 Connecticut Ave NW, Washington, DC, 20015. Phone: (202) 363-2550. Providers update this record themselves, so call before visiting.

How can I verify William Joseph Demeo, PH.D.'s license?

NPPES lists District of Columbia license number LC300040, as entered by the provider. Search the District of Columbia 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.