Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Andrew William Jillson

Addiction (Substance Use Disorder) Counselor in Rockville, MD · enumerated 2020 · practices at Tree House Child Advocacy Center of Montgomery County.

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

National Provider Identifier

1396372751

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Registry record

Entity type Individual (Type 1)

Name Andrew William Jillson

Sex Male

Practice address 7300 Calhoun Pl Ste 700, Rockville, MD, 20855

Phone (240) 773-3199

Enumeration date Mar 25, 2020

Last updated in NPPES Mar 25, 2020

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License SC2384 (MD) Primary

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

Is NPI 1396372751 active?

Yes, as of the latest NPPES snapshot, NPI 1396372751 is active (record last updated 2020-03-25).

How do I verify Andrew Jillson's NPI record?

Cross-check NPI 1396372751 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Tree House Child Advocacy Center of Montgomery County Child Abuse Pediatrics Physician · Rockville, MD NPI 1558858217 Jenna Calton Clinical Psychologist · Rockville, MD NPI 1811489750

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-03-25.