Mark Leslie Nelson, PH.D.
Clinical Psychologist · Bel Air, MD
Mark Leslie Nelson, PH.D. is a clinical psychologist with a practice address in Bel Air, Maryland, and NPI 1508189911, issued on Mar 12, 2010. Check the license (Maryland 03906, 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 Leslie Nelson
- Credential
- PH.D.
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License number
- 03906 MD
Self-reported in NPPES; status is on the state search - Practice location
- 115 E Churchville RD, Bel Air, MD 21014
- Phone
- (443) 226-3868
- Enumerated
- Mar 12, 2010
- Record last updated
- Mar 12, 2010 (not updated in 16 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest clinical psychologist records → All 1,499 in Maryland → Look up another NPI →
Verify Mark Leslie Nelson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maryland board licenses this profession
Search for license 03906Check 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 Leslie Nelson among 1,499 clinical psychologist records in Maryland
Mark Leslie Nelson, PH.D. is one of 1,499 clinical psychologist records with a practice address in Maryland. 10% 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 2010, is newer than 47% of them.
- NPI issued2010 · 47% of these records are older, 49% newer
- In a Medicare fileNo · 10% of these records are
- In the CMS Doctors and Clinicians fileNo · 18% of these records are
- Record last updated2010 · 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 103TC0700X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Clinical Psychologist providers in Maryland
There are 1,499 clinical psychologist records in Maryland. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 1,499 in Maryland → Every provider in Bel Air → Clinical Psychologist nationwide →
The 8 clinical psychologist records with the nearest ZIP codes
- Jacqueline BeaudryBel Air, MD 210141902563711
- Michelle Coombs, PHDBel Air, MD 210141578924940
- Evelyn Edmunds, PH.D.Bel Air, MD 210141528004900
- Donna Harkins, PSY.D.Bel Air, MD 210141902811334
- David Jahn, PHDBel Air, MD 210141114147246
- Christina Jensema, PSY.D.Bel Air, MD 210141215050661
- Ann Lane, PSYDBel Air, MD 210141700912078
- Lyubov Popivker, PSYDBel Air, MD 210141215256664
Common questions
What is Mark Leslie Nelson, PH.D.'s NPI number?
Mark Leslie Nelson, PH.D.'s National Provider Identifier (NPI) is 1508189911, issued on Mar 12, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Mark Leslie Nelson, PH.D. located?
The NPPES record lists a practice address at 115 E Churchville RD, Bel Air, MD, 21014. Phone: (443) 226-3868. Providers update this record themselves, so call before visiting.
How can I verify Mark Leslie Nelson, PH.D.'s license?
NPPES lists Maryland license number 03906, 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.