Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Erica Lynn Deenihan, FNP

Family Nurse Practitioner in Dyer, IN · enumerated 2019.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1861033060

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Registry record

Entity type Individual (Type 1)

Name Erica Lynn Deenihan

Credential FNP

Sex Female

Practice address 1001 Calumet Ave, Dyer, IN, 46311

Phone (219) 924-8178

Enumeration date Sep 30, 2019

Last updated in NPPES Jul 7, 2026

Taxonomy & licenses

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License 71009656A (IN) Secondary

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 71009656A (IN) Primary

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 2019052720 (IN) Secondary

FNP · Family Nurse Practitioner: A nurse practitioner certified in family practice across the lifespan. About the FNP 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Erica Deenihan?

The National Provider Identifier (NPI) for Erica Deenihan is 1861033060, a Type 1 (individual) record in the CMS NPPES registry.

Where does Erica Deenihan practice?

The practice location on file with NPPES is in Dyer, IN. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Northwest Cancer Centers, PC Internal Medicine Physician · Dyer, IN NPI 1578527826 Sameer Sharma Gynecologic Oncology Physician · Dyer, IN NPI 1033278056 Mohamad Kassar Hematology & Oncology Physician · Dyer, IN NPI 1063691830 Neel Shah Hematology & Oncology Physician · Dyer, IN NPI 1356508915 Gowri Ramadas Hematology & Oncology Physician · Dyer, IN NPI 1528294998 Michael Tallarico Medical Oncology Physician · Dyer, IN NPI 1467773036 Shruti Singh Hematology & Oncology Physician · Dyer, IN NPI 1619210143 Melissa Krzus Family Nurse Practitioner · Dyer, IN NPI 1205243524

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-07-07.