Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Miss Maria Lynn Ortman, OTRL
Occupational Therapist in Hart, MI · enumerated 2015.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1538540810
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Registry record
Entity type Individual (Type 1)
Name Miss Maria Lynn Ortman
Credential OTRL
Sex Female
Practice address 701 E Main St, Hart, MI, 49420
Phone (231) 873-6600
Enumeration date Jun 12, 2015
Last updated in NPPES Mar 12, 2019
Taxonomy & licenses
225X00000X Occupational Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 5201008829 (MI) 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.
Frequently asked questions
What is the NPI number for Maria Ortman?
The National Provider Identifier (NPI) for Maria Ortman is 1538540810, a Type 1 (individual) record in the CMS NPPES registry.
Where does Maria Ortman practice?
The practice location on file with NPPES is in Hart, MI. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Oceana County Medical Care Facility Skilled Nursing Facility · Hart, MI NPI 1417955477 Oceana County Medical Care Facility Rehabilitation Clinic/Center · Hart, MI NPI 1306025523 Natalie Hoffman Family Nurse Practitioner · Hart, MI NPI 1336650134 Jessica Tariske Occupational Therapist · Hart, MI NPI 1467940908 Kaitlyn Felt Occupational Therapist · Hart, MI NPI 1265066765 Marissa Royce Speech-Language Pathologist · Hart, MI NPI 1003489766 Amanda Redeker Speech-Language Pathologist · Hart, MI NPI 1326710195 Kaitlyn Bacon Physical Therapist · Hart, MI NPI 1376280834
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-03-12.