Mark R. Lannon, LCSW-C
Clinical Social Worker · Hagerstown, MD
Mark R. Lannon, LCSW-C is a clinical social worker with a practice address in Hagerstown, Maryland, and NPI 1457440216, issued on Oct 12, 2006. Check the license (Maryland 03686, 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 R. Lannon
- Credential
- LCSW-C
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License number
- 03686 MD
Self-reported in NPPES; status is on the state search - Practice location
- 1180 Professional CT, Hagerstown, MD 21740
- Phone
- (301) 791-3045
- Enumerated
- Oct 12, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (240) 313-3071
- Entity
- Type 1 · individual
8 nearest clinical social worker records → All 9,007 in Maryland → Look up another NPI →
Also registered at 1180 Professional CT
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Constance Anton, MDPsychiatry Physician1679656904
- Cornelia Barron, LCSW-CClinical Social Worker1043508849
- Carl Benedict, LCPCMental Health Counselor1518056936
- Rhiannon Bennett, LGPCMental Health Counselor1841914728
- Whitney BlickenstaffSocial Worker1184466526
Verify Mark R. Lannon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maryland board licenses this profession
Search for license 03686Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Mark R. Lannon among 9,007 clinical social worker records in Maryland
Mark R. Lannon, LCSW-C is one of 9,007 clinical social worker records with a practice address in Maryland. 11% 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 1% of them.
- NPI issued2006 · 1% of these records are older, 88% newer
- In a Medicare fileNo · 11% of these records are
- In the CMS Doctors and Clinicians fileNo · 19% of these records are
- Record last updated2007 · 59% 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 Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
203 clinical social worker records list a practice address in Hagerstown
They are 203 of the 2,414 NPPES records with a practice address in Hagerstown, 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 9,007 in Maryland → Every provider in Hagerstown → Clinical Social Worker nationwide →
The 8 clinical social worker records with the nearest ZIP codes
- Stacey Black, LCSW-CHagerstown, MD 217401154332013
- Barbara Bogley, LCSWHagerstown, MD 217401366539736
- Maureen Chamberlain, LCSW-CHagerstown, MD 217401407862303
- Teresa Gilbert, LCSW-CHagerstown, MD 217401427138072
- Annette Jeffers, LCSW-CHagerstown, MD 217401003876111
- Julie Kugler-Bentley, LCSW-CHagerstown, MD 217401730199548
- Catherine Melby, LCSW-CHagerstown, MD 217401770591117
- Stephen Mellott, LCSWCHagerstown, MD 217401083680359
Common questions
What is Mark R. Lannon, LCSW-C's NPI number?
Mark R. Lannon, LCSW-C's National Provider Identifier (NPI) is 1457440216, issued on Oct 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark R. Lannon, LCSW-C located?
The NPPES record lists a practice address at 1180 Professional CT, Hagerstown, MD, 21740. Phone: (301) 791-3045. Providers update this record themselves, so call before visiting.
How can I verify Mark R. Lannon, LCSW-C's license?
NPPES lists Maryland license number 03686, 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.