Ariel N. Magallon, MD

Medicare activity in 2024

Official CMS public-use data for Ariel N. Magallon, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Most frequent services

1. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)156 services
2. Insertion of needle into vein for collection of blood sample (36415)109 services
3. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)71 services
4. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)67 services
5. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)22 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

• High blood pressure65%
• High cholesterol63%
• Arthritis46%
• Diabetes37%
• Ischemic heart disease25%
• Anxiety24%

Hospitals where Ariel N. Magallon works

Medicare's Facility Affiliation Data lists Ariel N. Magallon at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

• Northwestern Lake Forest HospitalLake Forest, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140130
• Northwestern Memorial HospitalChicago, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140281

Practice locations

Addresses where Ariel N. Magallon is enrolled with Medicare (CMS data updated October 2, 2026).

• 1475 E Belvidere Rd, Suite 185 Pavilion CGrayslake, IL 60030 (847) 535‑7647

Group practices

Medicare enrollment lists Ariel N. Magallon as a member of this group (CMS data updated October 2, 2026).

• Northwestern Medical Faculty Foundation4,503 clinicians in the group

Specialties

• Family Practiceprimary

Find other Family Practice doctors in Illinois →

Other family doctors in Grayslake

Clinicians with the same Medicare primary specialty in Grayslake, IL — not a recommendation.

• Temiwumi M. Ojo, MD
• Bryanna S. Paunovich, MD
• Vanessa Rose, MD
• Joyce M. Jones-King, MD
• Christina Urbanik, DO
• Catherine Bach, DO
• Ashley M. Watson, MD
• Adiba Khan, MD

All family doctors in Grayslake →

Other clinicians in Northwestern Medical Faculty Foundation

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Christine Hsieh, MD
• Erik E. Rodriguez, PA
• Kelene S. Rousey
• Mona S. Seaver
• Neal Andruska, MD
• Ji Min Kim

Clinician information

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians