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MARK K SANTILLAN M.D.
NPI 1114137668
Obstetrics & Gynecology - Maternal & Fetal Medicine in Iowa City, IA

Active since May 23, 2007PECOS EnrolledAccepts Medicare Assignment
200 HAWKINS DR, IOWA CITY, IA 52242(319) 356-1616(319) 384-6004 Get Directions Write a Review

NPPES record last updated: December 16, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Mark K Santillan M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARK K SANTILLAN M.D. (NPI 1114137668) is an individual maternal & fetal medicine provider in Iowa City, Iowa, licensed in Iowa (MD-36593) and active in the NPI registry since May 2007. He is enrolled in Medicare PECOS, is affiliated with University Of Iowa Hospital & Clinics, and maintains 4 additional practice locations.

NPPES Registry Identity

NPI1114137668
Entity TypeIndividualMale
Primary Taxonomy207VM0101X
Provider Legal NameMARK K SANTILLANCredential: M.D.
Location Address200 HAWKINS DRIowa City, IA 52242-1009
Mailing Address200 Hawkins DrIowa City, IA 52242-1009 · (319) 356-1616 · Fax (319) 384-6004
Phone(319) 356-1616
Fax(319) 384-6004
Sole ProprietorNo
Medical School CMSLoyola University Of Chicago, Stritch School Of MedicineGraduated 2002
Enumeration DateMay 23, 2007
Last NPPES UpdateDecember 16, 2025
NPPES CertifiedDecember 16, 2025
✔ NPI 1114137668 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyObstetrics & Gynecology · Maternal & Fetal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207VM0101X
License✔ Licensed in IA · MD-36593
Definition
An obstetrician/gynecologist who cares for, or provides consultation on, patients with complications of pregnancy. This specialist has advanced knowledge of the obstetrical, medical and surgical complications of pregnancy and their effect on both the mother and the fetus. The specialist also possesses expertise in the most current diagnostic and treatment modalities used in the care of patients with complicated pregnancies.
Also ListedObstetrics & GynecologyTaxonomy 207V00000X · License MD-36593 (IA)
200 HAWKINS DR, Iowa City, IA 52242
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Secondary Practice Locations 4

Location 1105 E 9th StCoralville, IA 52241-2209 · Phone (319) 467-2000 · Fax (319) 467-2510
Location 21360 N Dodge StIowa City, IA 52245-6114 · Phone (319) 356-2294 · Fax (319) 384-9693
Location 33385 Dexter Ct Ste 110Davenport, IA 52807-3475 · Phone (563) 355-2244 · Fax (319) 356-3949
Location 4500 E Market StIowa City, IA 52245-2633 · Phone (319) 339-3551 · Fax (319) 248-7945

Other Identifiers 1

Other70396IA · Wellmark Bcbs

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Medica, Oscar Insurance Company, Sanford Health Plan.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mark K Santillan M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID547351397
PECOS Enrollment IDI20070808000145
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

University Of Iowa Hospital & Clinics

Acute Care Hospitals · Iowa City, IA
3/5 CMS rating
OwnershipGovernment - State
CMS Certification Number160058
Location200 Hawkins DriveIowa City, IA 52242 · Johnson County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 52242 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$122.23 typical visit price
range $52.96 – $161.40
Typical copayment $30.55 (range $13.24 – $40.35)
Most-billed visit code 99204
Established Patient
$66.36 typical visit price
range $16.91 – $131.98
Typical copayment $16.59 (range $4.22 – $32.99)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

SANGIL LEE M.D.
Emergency Medicine
200 HAWKINS DR
IOWA CITY, IA 52242
Johnson County (319) 356-2233
RAMI G. EL ABIAD M.D.
Internal Medicine (Gastroenterology)
200 HAWKINS DR
IOWA CITY, IA 52242
Johnson County (319) 356-4901
GRERK SUTAMTEWAGUL MD
Internal Medicine (Hematology & Oncology)
200 HAWKINS DR, DEPT OF INTERNAL MEDICINE
IOWA CITY, IA 52242
Johnson County (319) 356-1616
DR. KALEB TANNER VEIT D.O.
Internal Medicine (Critical Care Medicine)
200 HAWKINS DR
IOWA CITY, IA 52242
Johnson County (319) 356-2320
OMAR JABER M.D
Chronic Disease Hospital
200 HAWKINS DR
IOWA CITY, IA 52242
Johnson County (319) 471-8958
JENNIFER MANCUSO MS, CGC
Genetic Counselor, MS
200 HAWKINS DR, 31663 PFP
IOWA CITY, IA 52242
Johnson County (319) 384-7983
ASHLEY KAISER M.D.
Obstetrics & Gynecology
200 HAWKINS DR, DEPT OF OBGYN
IOWA CITY, IA 52242
Johnson County (319) 356-2294
MRS. NANCY JANE MILLICE
Health Educator
200 HAWKINS DR, 0733 JPP
IOWA CITY, IA 52242
Johnson County (319) 356-3825

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mark Santillan's NPI number?

The NPI number for Mark Santillan is 1114137668. It was assigned to this individual provider in the NPPES registry on May 23, 2007.

Where is Mark Santillan located?

Mark Santillan practices at 200 Hawkins Dr, Iowa City, IA 52242. The listed phone number is (319) 356-1616.

What is Mark Santillan's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Maternal & Fetal Medicine, with taxonomy code 207VM0101X.

Is Mark Santillan enrolled in Medicare?

Yes. Mark Santillan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Mark Santillan accept?

Health plans from Medica, Oscar Insurance Company and Sanford Health Plan list Mark Santillan as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Mark Santillan affiliated with any hospitals?

According to CMS data, Mark Santillan is affiliated with University Of Iowa Hospital & Clinics.

When was this NPI record last updated?

The NPPES record for Mark Santillan was last updated on December 16, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.