Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mary K Lewis, LMSW
Social Worker in Chelsea, MI · enumerated 2008.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1306019732
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Mary K Lewis
Credential LMSW
Sex Female
Practice address 350 North Main Street, Ste 150, Chelsea, MI, 48118
Phone (734) 593-5251
Fax (734) 593-5255
Enumeration date Apr 7, 2008
Last updated in NPPES Jul 30, 2024
Taxonomy & licenses
104100000X Social Worker Behavioral Health & Social Service Providers · License 6801073041 (MI) Primary
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 750910829 | Other | MI | BCBSM |
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.
Frequently asked questions
What is the NPI number for Mary Lewis?
The National Provider Identifier (NPI) for Mary Lewis is 1306019732, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mary Lewis practice?
The practice location on file with NPPES is in Chelsea, MI. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Virginia Oemke Social Worker · Chelsea, MI NPI 1265499974 Julie Chappel Social Worker · Chelsea, MI NPI 1831156405 Traci Wilson Psychologist · Chelsea, MI NPI 1750304291 Frank Pavlovcic Psychiatry Physician · Chelsea, MI NPI 1629089230 Kelly Frederick-Castro Social Worker · Chelsea, MI NPI 1871630681 Stuart Chalin Social Worker · Chelsea, MI NPI 1285778126 Barbra Mazie Social Worker · Chelsea, MI NPI 1154595627 Amanda Connon Psychologist · Chelsea, MI NPI 1144505744
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-07-30.