NPPES file of Aug 9, 2026

Mark Phillipe Oquist-Cardenas, MD

Emergency Medicine Physician · Libertyville, IL

Mark Phillipe Oquist-Cardenas, MD is an emergency medicine physician with a practice address in Libertyville, Illinois, and NPI 1306208103, issued on Mar 22, 2016. Check the license (Illinois 036152526, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1306208103
Name
Mark Phillipe Oquist-Cardenas
Credential
MD
Primary taxonomy
Emergency Medicine Physician 207P00000X
License numbers
036152526 IL
312272 LA
Self-reported in NPPES; status is on the state search
Practice location
801 S Milwaukee Ave, Libertyville, IL 60048
Phone
(847) 990-5300
Enumerated
Mar 22, 2016
Record last updated
Jan 20, 2023
Medicare enrollment
Enrolled (PECOS I20200706000920); accepts Medicare assignment
Medical or professional school
Michigan State University College Of Human Medicine, 2016
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 801 S Milwaukee Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Ellen Adler, MS CCC-SLPSpeech-Language Pathologist1700809647
  2. Nasreen Ahmed, M.D.Hospitalist Physician1699070540
  3. Natasha Ali, PACPhysician Assistant1487096483
  4. Sarah Alkilany, MDAnesthesiology Physician1922673953
  5. Dominique AreolaPediatric Occupational Therapist1669933594
  6. Jenna AshleySurgical Physician Assistant1346082153

Verify Mark Phillipe Oquist-Cardenas in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
    Search for license 036152526
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Illinois license search

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54% fewer Medicare Part D claims than the average emergency medicine physician in 2024

104 Medicare Part D claims for 81 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 11 claims were for opioids.

  1. Mark Oquist-Cardenas104
  2. Specialty average226

Most prescribed

  1. Cephalexin20 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Bills Medicare through 2 group practices

  1. Advocate Health And Hospitals CorporationPark Ridge, IL
  2. Cepamerica Illinois LLPLibertyville, IL

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Mark Phillipe Oquist-Cardenas among 3,291 emergency medicine physician records in Illinois

Mark Phillipe Oquist-Cardenas, MD is one of 3,291 emergency medicine physician records with a practice address in Illinois. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 65% of them.

  • NPI issued2016 · 65% of these records are older, 32% newer
  • In a Medicare fileYes · 80% of these records are
  • In the CMS Doctors and Clinicians fileYes · 57% of these records are
  • Graduated2016 · median 2012 among the 1,867 with a school on file
  • Record last updated2023 · 47% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

15 emergency medicine physician records list a practice address in Libertyville

They are 15 of the 1,361 NPPES records with a practice address in Libertyville, and 3,291 emergency medicine physician records in Illinois.

The 8 emergency medicine physician records with the nearest ZIP codes

  1. Christopher Beach, M.D.Libertyville, IL 600481649245564
  2. J Eric Castro, MDLibertyville, IL 600481316971807
  3. Andrew Geiser, MDLibertyville, IL 600481891343133
  4. Joshua Hallett, D.O.Libertyville, IL 600481336452861
  5. Roy Horras, M.D., FACEPLibertyville, IL 600481255356663
  6. Shahab Kazi, DOLibertyville, IL 600481194306894
  7. Peter Kurko, M.D.Libertyville, IL 600481225065782
  8. Rachel McDowell, MDLibertyville, IL 600481104879071

Common questions

What is Mark Phillipe Oquist-Cardenas, MD's NPI number?

Mark Phillipe Oquist-Cardenas, MD's National Provider Identifier (NPI) is 1306208103, issued on Mar 22, 2016. An NPI identifies a provider in billing; it is not a license.

Where is Mark Phillipe Oquist-Cardenas, MD located?

The NPPES record lists a practice address at 801 S Milwaukee Ave, Libertyville, IL, 60048. Phone: (847) 990-5300. Providers update this record themselves, so call before visiting.

How can I verify Mark Phillipe Oquist-Cardenas, MD's license?

NPPES lists Illinois license number 036152526, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Mark Phillipe Oquist-Cardenas, MD prescribe under Medicare Part D?

In 2024, Mark Phillipe Oquist-Cardenas, MD had 104 Medicare Part D claims for 81 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.