Mark Lewis O'Neill, LCSW-C
Clinical Social Worker · Kingsville, MD
Mark Lewis O'Neill, LCSW-C is a clinical social worker with a practice address in Kingsville, Maryland, and NPI 1588653950, issued on Oct 19, 2005. Check the license (Maryland 00218, as entered in NPPES) with the Maryland board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Mark Lewis O'Neill
- Credential
- LCSW-C
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License number
- 00218 MD
Self-reported in NPPES; status is on the state search - Practice location
- 19 Elray RD, Kingsville, MD 21087
- Phone
- (410) 592-7517
- Enumerated
- Oct 19, 2005
- Record last updated
- Jul 13, 2026
- Entity
- Type 1 · individual
Verify Mark Lewis O'Neill in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maryland board licenses this profession
Search for license 00218Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2 clinical social worker records list a practice address in Kingsville
They are 2 of the 17 NPPES records with a practice address in Kingsville, and 9,007 clinical social worker records in Maryland. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 2 in Kingsville → All 9,007 in Maryland → Every provider in Kingsville →
Other clinical social worker records in Maryland
- Laguy AbarakaFrederick, MD1467380378
- Fadi Abdallah, LCSW-CColumbia, MD1881620573
- Eleanor Abdel-Salam, LCSW-CCatonsville, MD1487300380
- Safiyya Abdul BariLanham, MD1588285423
- Shabana Abdullah, LCSW-CClarksville, MD1538937446
- Jane Abernathy, LCSWCBaltimore, MD1972587343
- Karla Abney, LGSW, LMSWRockville, MD1215012745
- Shameka Abney, MSW, LCSWFort Washington, MD1144343229
- Perpetua AbongnelahGreenbelt, MD1023371812
- Estela Abosch, MSWBaltimore, MD1790980217
Common questions
What is Mark Lewis O'Neill, LCSW-C's NPI number?
Mark Lewis O'Neill, LCSW-C's National Provider Identifier (NPI) is 1588653950, issued on Oct 19, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mark Lewis O'Neill, LCSW-C located?
The NPPES record lists a practice address at 19 Elray RD, Kingsville, MD, 21087. Phone: (410) 592-7517. Providers update this record themselves, so call before visiting.
How can I verify Mark Lewis O'Neill, LCSW-C's license?
NPPES lists Maryland license number 00218, as entered by the provider. Search the Maryland 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.