Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

MRS. SYLVIA ALETHA MARSHALL
NPI 1023932183
Counselor - Addiction (Substance Use Disorder) in Timonium, MD

Q: What is Sylvia Marshall's NPI number?

The NPI number for Sylvia Marshall is 1023932183. It was assigned to this individual provider in the NPPES registry on August 10, 2026.

Q: What is Sylvia Marshall's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Addiction (Substance Use Disorder), with taxonomy code 101YA0400X.

Q: When was this NPI record last updated?

The NPPES record for Sylvia Marshall was last updated on August 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 days 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.

Active since August 10, 2026

1417 TENBURY RD, TIMONIUM, MD 21093(202) 378-0367 Get Directions Write a Review

NPPES record added: August 10, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

On this page

About Mrs. Sylvia Aletha Marshall NPPES

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

MRS. SYLVIA ALETHA MARSHALL (NPI 1023932183) is an individual addiction (substance use disorder) provider in Timonium, Maryland, licensed in Maryland (ADT4198) and active in the NPI registry since August 2026.

NPPES Registry Identity

NPI1023932183

Entity TypeIndividualFemale

Primary Taxonomy101YA0400X

Provider Legal NameMRS. SYLVIA ALETHA MARSHALL

Location Address1417 TENBURY RDTimonium, MD 21093-6117

Mailing Address1417 Tenbury RdTimonium, MD 21093-6117 · (202) 378-0367

Phone(202) 378-0367

Sole ProprietorNo

Enumeration DateAugust 10, 2026

NPPES CertifiedAugust 10, 2026

✔ NPI 1023932183 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Addiction (Substance Use Disorder)Behavioral Health & Social Service Providers

Taxonomy Code101YA0400X

License✔ Licensed in MD · ADT4198

1417 TENBURY RD, Timonium, MD 21093

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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 Sylvia Marshall's NPI number?

The NPI number for Sylvia Marshall is 1023932183. It was assigned to this individual provider in the NPPES registry on August 10, 2026.

Where is Sylvia Marshall located?

Sylvia Marshall practices at 1417 Tenbury Rd, Timonium, MD 21093. The listed phone number is (202) 378-0367.

What is Sylvia Marshall's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Addiction (Substance Use Disorder), with taxonomy code 101YA0400X.

When was this NPI record last updated?

The NPPES record for Sylvia Marshall was last updated on August 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 days 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.