Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Teresa Diane Clark, RN
Registered Nurse in Effingham, IL · enumerated 2022.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1538870084
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Registry record
Entity type Individual (Type 1)
Name Teresa Diane Clark
Credential RN
Sex Female
Practice address 1011 Ford Ave, Effingham, IL, 62401
Phone (217) 347-7600
Enumeration date Dec 6, 2022
Last updated in NPPES Dec 6, 2022
Taxonomy & licenses
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.
Frequently asked questions
What is the NPI number for Teresa Clark?
The National Provider Identifier (NPI) for Teresa Clark is 1538870084, a Type 1 (individual) record in the CMS NPPES registry.
Where does Teresa Clark practice?
The practice location on file with NPPES is in Effingham, IL. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Dong Joon Chung Family Medicine Physician · Effingham, IL NPI 1649240888 Lori Kessler Registered Nurse · Effingham, IL NPI 1164518551 Rita Maldonado Internal Medicine Physician · Effingham, IL NPI 1154407039 Stephanie Kaufmann Licensed Practical Nurse · Effingham, IL NPI 1619181542 Jennifer Hills Registered Dietitian · Effingham, IL NPI 1790957512 Sherri Wood Family Nurse Practitioner · Effingham, IL NPI 1699912840 Amber Miller Clinical Social Worker · Effingham, IL NPI 1194178061 Tamara Jones Clinical Social Worker · Effingham, IL NPI 1780218545
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-12-06.