Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mark A Simaga, MD
Neurology Physician in Hobart, IN · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1598818270
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Mark A Simaga
Credential MD
Sex Male
Practice address 1600 S Lake Park Ave, Suite 1102, Hobart, IN, 46342
Phone (219) 947-6960
Fax (219) 947-6960
Enumeration date Jan 18, 2007
Last updated in NPPES Dec 17, 2012
Taxonomy & licenses
207T00000X Neurological Surgery Physician Allopathic & Osteopathic Physicians · License 01046578A (IN) Secondary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 84104 | Other | - | ANTHEM |
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 Mark Simaga?
The National Provider Identifier (NPI) for Mark Simaga is 1598818270, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mark Simaga practice?
The practice location on file with NPPES is in Hobart, IN. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Barbara Fuller Hematology & Oncology Physician · Hobart, IN NPI 1972545804 Monroe Medical Associates, Sc Hematology & Oncology Physician · Hobart, IN NPI 1386686145 Advanced Endocrinology and Diabetes Center, Endocrinology, Diabetes & Metabolism Physician · Hobart, IN NPI 1619986379 The Woman'S Wellness Center, P.C. Urology Physician · Hobart, IN NPI 1831267715 Spinal & Neurosurgical Institute P.C. Neurological Surgery Physician · Hobart, IN NPI 1811177785 Jennifer Green Family Nurse Practitioner · Hobart, IN NPI 1649570219
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-12-17.