Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ms. Muriel Anne Jacobson Hess, LISW
Social Worker in Mason City, IA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1083812846
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Registry record
Entity type Individual (Type 1)
Name Ms. Muriel Anne Jacobson Hess
Credential LISW
Sex Female
Practice address 520 S Pierce Ave, Mason City, IA, 50401
Phone (641) 421-8077
Fax (641) 494-5005
Enumeration date Jul 3, 2007
Last updated in NPPES Sep 21, 2010
Taxonomy & licenses
104100000X Social Worker Behavioral Health & Social Service Providers · License LMSW 05000 (IA) 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 Muriel Hess?
The National Provider Identifier (NPI) for Muriel Hess is 1083812846, a Type 1 (individual) record in the CMS NPPES registry.
Where does Muriel Hess practice?
The practice location on file with NPPES is in Mason City, IA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Emerlee Stilley Family Nurse Practitioner · Mason City, IA NPI 1346229531 Mason City Imaging Partners LLC Magnetic Resonance Imaging (MRI) Clinic/Center · Mason City, IA NPI 1558325829 Arla Mcvicker Family Medicine Physician · Mason City, IA NPI 1114937232 Heartland Laboratories, Inc. Prosthetic/Orthotic Supplier · Mason City, IA NPI 1306935713 Anna Schneider Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist · Mason City, IA NPI 1932502044 Eastern Iowa Therapeutics PC Physical Therapist · Mason City, IA NPI 1952796245 Kristine Trask Physical Therapist · Mason City, IA NPI 1023499852 Jenna Whittle Registered Dietitian · Mason City, IA NPI 1780177154
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-09-21.