Mary A Mahieu, M.D.
Rheumatology Internal Medicine
Mary A Mahieu is a Rheumatology Internal Medicine specialist based in Chicago, IL with over 16 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
Also practices: INTERNAL MEDICINE
Mary a Mahieu, M.D. has practiced internal medicine for 16+ years, working in independent practice. A Loyola University of Chicago, Stritch School of Medicine graduate since 2010, she brings 16+ years of experience. CMS Medicare data shows her patients commonly have arthritis, hypertension, and high cholesterol. CMS MIPS quality score: 94.1/100 (2023).
At a glance
- Prescribes opioids less than 29% of reporting doctors in Illinois
- Federal MIPS score higher than 46% of MIPS-scored doctors in Illinois
- Virtual visits available — no app or travel required
Older · 3557dNPPES updated 2016-08-30 · verify NPI on CMS · Verify license at Illinois Department of Financial & Professional Regulation — Medical
Contact & Location
Practice Location
675 N Saint Clair St Galter 14-100, Chicago, IL 60611-5975
How Does This Doctor Compare?
Based on Medicare data, this doctor has an average quality score compared to other doctors in Illinois, prescribes opioid pain medications conservatively.
MIPS Score
202394.1/100
Illinois avg: 88.6 · US avg: 83.6
✓ Higher than most doctors nationally(+10.5 pts)
Average range among MIPS-scored doctors in IllinoisHow the government rates this doctor's Medicare care quality. Scores above 75 are considered good.
Opioid Rx
↓ Lower = better2.71%
Illinois avg: 4.5 · US avg: 5.1
✓ Higher than most doctors nationally(-2.4 pts)
2.71% of this doctor's prescriptions are opioid pain medications. Lower means more cautious prescribing.
Medicare Patients
301
Unique beneficiaries
Standard volumePrescription Recipients
211
Patients prescribed
Prescriptions Written
1,254
Total claims
Total Medicare drug cost: $1.39M
Percentile rankings compared against 2,844 reporting peers in Illinois.
Data Note: Sourced from CMS Medicare Provider Utilization & Payment Data. Percentile rankings compare this provider against all peers with reported data in the same state. Updated annually to reflect the latest federal reporting cycle.
What This Doctor Treats Most
Based on Medicare claims data — here's what patients commonly see this doctor for
Based on Medicare data, this doctor primarily manages Arthritis, Hypertension, and High Cholesterol.
Joint inflammation causing pain, swelling, and stiffness
US avg: 49.3%↑ More patients than average (+24%) — a focus area for this doctor
High blood pressure — a leading risk factor for heart disease and stroke
US avg: 70.2%↓ Fewer patients than average (-4%) — less common here
Elevated cholesterol or triglycerides that increase heart disease risk
US avg: 70.4%↓ Fewer patients than average (-4%) — less common here
Weakened bones that are more prone to fractures, common in older adults
US avg: 18.1%↑ More patients than average (+20%) — a focus area for this doctor
Conditions affecting emotional state, including depression and bipolar disorder
Reduced blood flow to the heart muscle, commonly known as coronary artery disease
US avg: 31.7%↓ Fewer patients than average (-4%) — less common here
Excessive worry or fear that interferes with daily life
US avg: 34.1%↓ Fewer patients than average (-7%) — less common here
A mood disorder causing persistent sadness and loss of interest in activities
US avg: 31.8%↓ Fewer patients than average (-6%) — less common here
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Graduated medical school · 2010
Loyola University Chicago Stritch School of Medicine
16 years in practice
Experienced
Rheumatologists treat autoimmune and inflammatory conditions including rheumatoid arthritis, lupus, psoriatic arthritis, gout, osteoarthritis, and vasculitis. They manage biologic therapies and joint-preserving treatments.
Taxonomy: 207RR0500X
Education & Training
Loyola University of Chicago, Stritch School of Medicine (Class of 2010)
Mailing address
240 E Huron St Mcgaw M-300, Chicago, IL 60611-2909
Differs from practice location
Virtual Internal Medicine Care With Mary a Mahieu
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Mary a Mahieu for arthritis follow-ups, blood pressure monitoring, cholesterol management — no travel to Chicago required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes. Medicare enrolled per CMS records.
Frequently Asked Questions
Common questions about Mary a Mahieu
Dr. Mahieu is listed as active in the NPI registry with telehealth listed in Chicago, IL. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (312) 695-8628.
Sourced from CMS NPPES · OIG LEIE · CMS QPP 2023 · CMS Medicare Part D · CMS Physician Comparator. See Data Methodology.
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Contact Mary a Mahieu
Practice Location
675 N Saint Clair St Galter 14-100, Chicago, IL 60611-5975
Mailing Address
240 E Huron St Mcgaw M-300, Chicago, IL 60611-2909
This is a provider directory. Contact the office directly to schedule appointments.
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