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MARK A RIDDLE M.D.
NPI 1316989304
Psychiatry & Neurology - Child & Adolescent Psychiatry in Columbia, MD

Active since June 12, 2006
5500 KNOLL NORTH DR STE 370, COLUMBIA, MD 21045(410) 837-2050(866) 629-0091 Get Directions Write a Review

NPPES record last updated: July 21, 2022. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jul 21, 2022, Nov 5, 2019, Jun 22, 2017 (3 updates tracked since 2017).

About Mark A Riddle M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARK A RIDDLE M.D. (NPI 1316989304) is an individual child & adolescent psychiatry provider in Columbia, Maryland, licensed in Maryland (D0045696) and active in the NPI registry since June 2006.

NPPES Registry Identity

NPI1316989304
Entity TypeIndividualMale
Primary Taxonomy2084P0804X
Provider Legal NameMARK A RIDDLECredential: M.D.
Location Address5500 KNOLL NORTH DR STE 370Columbia, MD 21045-2393
Mailing Address1111 N Charles StBaltimore, MD 21201-5505 · (410) 837-2050 · Fax (866) 629-0091
Phone(410) 837-2050
Fax(866) 629-0091
Sole ProprietorYes
Enumeration DateJune 12, 2006
Last NPPES UpdateJuly 21, 20223 updates tracked since enumeration
✔ NPI 1316989304 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · Child & Adolescent PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0804X
License✔ Licensed in MD · D0045696
Definition
Child & Adolescent Psychiatry is a subspecialty of psychiatry with additional skills and training in the diagnosis and treatment of developmental, behavioral, emotional, and mental disorders of childhood and adolescence.
5500 KNOLL NORTH DR STE 370, Columbia, MD 21045
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Other Identifiers 1

Medicaid162501200MD

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MANIRAJ JEYARAJU MD
Family Medicine
5500 KNOLL NORTH DR STE 370
COLUMBIA, MD 21045
Howard County (410) 837-2050
ALYSSA MILLER LGSW
Social Worker (School)
5500 KNOLL NORTH DR STE 370
COLUMBIA, MD 21045
Howard County (410) 837-2050
SHANNON SANTORO LCSW-C
Social Worker (Clinical)
5500 KNOLL NORTH DR STE 370
COLUMBIA, MD 21045
Howard County (410) 837-2050
MS. LISA MONIQUE JAMES LCSW-C
Social Worker (Clinical)
5500 KNOLL NORTH DR STE 370
COLUMBIA, MD 21045
Howard County (410) 837-2050
AYANA GALLEGO DDS
Dentist (General Practice)
5500 KNOLL NORTH DR STE 370
COLUMBIA, MD 21045
Howard County (410) 837-2050
NECOLE M. DIGGS
Social Worker (Clinical)
5500 KNOLL NORTH DR STE 370
COLUMBIA, MD 21045
Howard County (410) 837-2050
ALYSSA TORAN LCSW-C
Social Worker (Clinical)
5500 KNOLL NORTH DR STE 370
COLUMBIA, MD 21045
Howard County (410) 884-7831
BENJAMIN DAHUNSI PMHNP
Nurse Practitioner (Psychiatric/Mental Health)
5500 KNOLL NORTH DR STE 370
COLUMBIA, MD 21045
Howard County (410) 837-2050

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mark Riddle's NPI number?

The NPI number for Mark Riddle is 1316989304. It was assigned to this individual provider in the NPPES registry on June 12, 2006.

Where is Mark Riddle located?

Mark Riddle practices at 5500 Knoll North Dr Ste 370, Columbia, MD 21045. The listed phone number is (410) 837-2050.

What is Mark Riddle's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Child & Adolescent Psychiatry, with taxonomy code 2084P0804X.

When was this NPI record last updated?

The NPPES record for Mark Riddle was last updated on July 21, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.