NPI Portal NPI Lookup & Verification

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

Mary Margaret Watson, RN

Registered Nurse in Warren, MI · enumerated 2009 · practices at Compassionate Solutions, Inc.

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

National Provider Identifier

1871826321

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Registry record

Entity type Individual (Type 1)
Name Mary Margaret Watson
Credential RN
Sex Female
Practice address Warren, MI, 48092
Phone (586) 354-2060
Fax (586) 582-8677
Enumeration date Sep 16, 2009
Last updated in NPPES Sep 16, 2009

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

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License 4704132040 (MI) Primary
RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN credential

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 Mary Watson practice?
The practice location on file with NPPES is in Warren, MI. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Mary Watson?
The National Provider Identifier (NPI) for Mary Watson is 1871826321, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-09-16.