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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MARIA HOLSTROM-MERCADER
NPI 1306536339
Emergency Medicine in Libertyville, IL

Active since May 12, 2023PECOS Enrolled
801 S MILWAUKEE AVE, LIBERTYVILLE, IL 60048(847) 362-2900 Get Directions Write a Review

NPPES record last updated: June 18, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: May 23, 2023, May 12, 2023 (2 updates tracked since 2023).

About Maria Holstrom-mercader NPPES

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

MARIA HOLSTROM-MERCADER (NPI 1306536339) is an individual emergency medicine provider in Libertyville, Illinois, licensed in Illinois (036.178321) and active in the NPI registry since May 2023. She is enrolled in Medicare PECOS and is a graduate of Pennsylvania State University College Of Medicine (2023).

NPPES Registry Identity

NPI1306536339
Entity TypeIndividualFemale
Primary Taxonomy207P00000X
Provider Legal NameMARIA HOLSTROM-MERCADER
Location Address801 S MILWAUKEE AVELibertyville, IL 60048-3204
Mailing Address801 S Milwaukee AveLibertyville, IL 60048-3204 · (847) 362-2900
Phone(847) 362-2900
Sole ProprietorYes
Medical School CMSPennsylvania State University College Of MedicineGraduated 2023
Enumeration DateMay 12, 2023
Last NPPES UpdateJune 18, 20262 updates tracked since enumeration
NPPES CertifiedJune 18, 2026
✔ NPI 1306536339 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in IL · 036.178321
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
801 S MILWAUKEE AVE, Libertyville, IL 60048
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Maria Holstrom-mercader is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID4486014214
PECOS Enrollment IDI20260122000740
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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60048 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
$93.02 typical visit price
range $59.81 – $181.38
Typical copayment $23.25 (range $14.95 – $45.34)
Most-billed visit code 99203
Established Patient
$105.07 typical visit price
range $19.15 – $147.12
Typical copayment $26.26 (range $4.78 – $36.78)
Most-billed visit code 99214
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.

DR. ANNA MAE STEGEMANN D.O.
Anesthesiology
801 S MILWAUKEE AVE
LIBERTYVILLE, IL 60048
Lake County (847) 990-2135
MAUREEN FRITZ DPT
Physical Therapist
801 S MILWAUKEE AVE, REHAB DEPARTMENT
LIBERTYVILLE, IL 60048
Lake County (847) 990-5350
DR. DEAN JOSEPH CONTERATO MD
Radiology (Radiation Oncology)
801 S MILWAUKEE AVE
LIBERTYVILLE, IL 60048
Lake County (847) 990-5910
GLORIA BOLAND BSN, RN, CDCES
Registered Nurse (Diabetes Educator)
801 S MILWAUKEE AVE
LIBERTYVILLE, IL 60048
Lake County (847) 990-5579
CONDELL MEDICAL CENTER
General Acute Care Hospital
801 S MILWAUKEE AVE
LIBERTYVILLE, IL 60048
Lake County (847) 362-2900
MARINA LYUBKIN
Nurse Practitioner
801 S MILWAUKEE AVE
LIBERTYVILLE, IL 60048
Lake County (847) 362-2900
IHC-LIBERTYVILLE EMERGENCY PHYSICIANS, LLC
Emergency Medicine
801 S MILWAUKEE AVE
LIBERTYVILLE, IL 60048
Lake County (414) 290-6718
DR. DIMITRIOS T. MOUGOLIAS M.D.
Emergency Medicine
801 S MILWAUKEE AVE
LIBERTYVILLE, IL 60048
Lake County (847) 990-2075

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 Maria Holstrom-mercader's NPI number?

The NPI number for Maria Holstrom-mercader is 1306536339. It was assigned to this individual provider in the NPPES registry on May 12, 2023.

Where is Maria Holstrom-mercader located?

Maria Holstrom-mercader practices at 801 S Milwaukee Ave, Libertyville, IL 60048. The listed phone number is (847) 362-2900.

What is Maria Holstrom-mercader's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Maria Holstrom-mercader enrolled in Medicare?

Yes. Maria Holstrom-mercader is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Maria Holstrom-mercader was last updated on June 18, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 55 days 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.