Mark K. Santillan, M.D.
NPI 1114137668ActiveIndividual· Obstetrics & Gynecology, Maternal & Fetal Medicine· Iowa City, IA
Obstetrics & Gynecology, Maternal & Fetal Medicine (M.D.) in Iowa City, Iowa, trained at Loyola University of Chicago, Stritch School of Medicine (class of 2002). Enrolled in Medicare as practitioner - obstetrics/gynecology. Janssen Research & Development, LLC reported $1,615 in payments in 2025, mostly travel and lodging.
Overview
| NPI | 1114137668 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 23, 2007 |
| Last updated in NPPES | Dec 16, 2025 |
| Certified by provider | Dec 16, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology, Maternal & Fetal Medicine Primary | 207VM0101X | MD-36593 | IA |
| Obstetrics & Gynecology | 207V00000X | MD-36593 | IA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Obstetrics/Gynecology (IA) |
|---|
Education and affiliations
| Medical school | Loyola University of Chicago, Stritch School of Medicine |
|---|---|
| Graduation year | 2002 |
| Medicare specialty | Obstetrics/Gynecology |
Medical group
- State University of IowaCoralville, IA · 1,897 clinicians
Hospital affiliation
- University of Iowa Hospital & ClinicsIowa City, IA
Industry payments (Open Payments)
- 2025$1,615 · 13 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Research & Development, LLC | $1,615 | 13 |
What the 2025 payments were for
- Travel and Lodging$1,205 · 5 payments
- Food and Beverage$410.00 · 8 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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