Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mary Katherine Williams
Behavior Analyst in Kentwood, MI · enumerated 2013.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1801136528
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Registry record
Entity type Individual (Type 1)
Name Mary Katherine Williams
Sex Female
Practice address 3361 36th St Se, Kentwood, MI, 49512
Phone (616) 942-2522
Enumeration date Feb 15, 2013
Last updated in NPPES Feb 15, 2013
Taxonomy & licenses
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 Williams?
The National Provider Identifier (NPI) for Mary Williams is 1801136528, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mary Williams practice?
The practice location on file with NPPES is in Kentwood, MI. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Laura Mcbeth Speech-Language Pathologist · Grand Rapids, MI NPI 1366747503 Allison Mundwiler Case Manager/Care Coordinator · Grand Rapids, MI NPI 1881986651 Mira Jourdan Clinical Psychologist · Kentwood, MI NPI 1902194806 Margaret Moore Behavior Analyst · Kentwood, MI NPI 1922382266 Felicia Bross Speech-Language Pathologist · Grand Rapids, MI NPI 1003155342 Mato Topa Augustine Behavior Analyst · Kentwood, MI NPI 1467898759 Sharon Getz Clinical Psychologist · Kentwood, MI NPI 1467840991 Jaclyn Piper Behavior Analyst · Grand Rapids, MI NPI 1538531439
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-02-15.