Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Leonard A Richardson, MD

Internal Medicine Physician in Columbia, MD · enumerated 2006 · practices at Usa Dme LLC.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1053384750

Verified

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Registry record

Entity type Individual (Type 1)

Name Dr. Leonard A Richardson

Credential MD

Sex Male

Practice address Columbia, MD, 21046

Phone (410) 381-8078

Fax (443) 445-4111

Enumeration date Feb 12, 2006

Last updated in NPPES Jul 7, 2024

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License D0057722 (MD) Secondary

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License D0057722 (MD) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License D0057722 (MD) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
10242541	Other	-	AMERIGROUP
8113427	Other	-	CIGNA
693604100	Medicaid	MD	-
G501-0001	Other	MD	CAREFIRST

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Leonard Richardson?

The National Provider Identifier (NPI) for Leonard Richardson is 1053384750, a Type 1 (individual) record in the CMS NPPES registry.

Where does Leonard Richardson practice?

The practice location on file with NPPES is in Columbia, MD. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Abria Green Psychiatric/Mental Health Nurse Practitioner · Columbia, MD NPI 1770256166 Usa Dme LLC Durable Medical Equipment & Medical Supplies · Columbia, MD NPI 1639866437

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-07-07.