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

Dr. Ava Williams Nelson, M.D.

Specialist in Catonsville, MD · enumerated 2007.

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

National Provider Identifier

1598886699

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Registry record

Entity type Individual (Type 1)
Name Dr. Ava Williams Nelson
Credential M.D.
Sex Female
Practice address Catonsville, MD, 21228
Phone (410) 788-2372
Enumeration date Apr 3, 2007
Last updated in NPPES Jul 8, 2007

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

Taxonomy & licenses

174400000X Specialist Other Service Providers · License D0031653 (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
1334367 Medicaid MD -

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.

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Frequently asked questions

Where does Ava Nelson practice?
The practice location on file with NPPES is in Catonsville, MD. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Ava Nelson?
The National Provider Identifier (NPI) for Ava Nelson is 1598886699, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.