Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Department of Health and Mental Hygiene

Student Health Clinic/Center in Windsor Mill, MD · enumerated 2025 · authorized official Tonia Ross, Billing Manager.

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

National Provider Identifier

1811862550

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)

Legal business name Department of Health and Mental Hygiene

Practice address 1918 Winder Rd, Windsor Mill, MD, 21244

Phone (443) 809-1300

Enumeration date Oct 10, 2025

Last updated in NPPES Oct 10, 2025

Taxonomy & classification

261QP0905X State or Local Public Health Clinic/Center Ambulatory Health Care Facilities Secondary

261QS1000X Student Health Clinic/Center Ambulatory Health Care Facilities Primary

Authorized official

Name Tonia Ross

Title Billing Manager

Phone (410) 887-0684

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 a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

What type of organization is Department of Health and Mental Hygiene?

Department of Health and Mental Hygiene is registered in NPPES as a Student Health Clinic/Center (its primary provider taxonomy).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-10-10.