Olwen M Hahn, M.D.
Olwen M Hahn is a Hematology & Oncology specialist based in Chicago, IL with over 25 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
Also practices: INTERNAL MEDICINE
Olwen M Hahn, M.D. has practiced internal medicine for 25+ years, working in independent practice. She graduated from Emory University School of Medicine in 2001 and has 25+ years of clinical experience. Among her Medicare patients, common conditions include hypertension, cancer, and high cholesterol (per CMS data). CMS MIPS quality score: 97.72/100 (2023).
At a glance
- Prescribes opioids less than 26% of reporting doctors in Illinois
- Federal MIPS score higher than 87% of MIPS-scored doctors in Illinois
- Virtual visits available — no app or travel required
Older · 6894dNPPES updated 2007-07-08 · verify NPI on CMS · Verify license at Illinois Department of Financial & Professional Regulation — Medical
Contact & Location
Practice Location
5841 S Maryland Ave Mc 2115, Chicago, IL 60637-1447
How Does This Doctor Compare?
Based on Medicare data, this doctor scores better than 87% of doctors in Illinois on federal quality measures, prescribes opioid pain medications conservatively.
MIPS Score
202397.72/100
Illinois avg: 88.6 · US avg: 83.6
✓ Higher than most doctors nationally(+14.1 pts)
Better than 87% of MIPS-scored doctors in IllinoisHow the government rates this doctor's Medicare care quality. Scores above 75 are considered good.
Opioid Rx
↓ Lower = better3.04%
Illinois avg: 4.5 · US avg: 5.1
✓ Higher than most doctors nationally(-2.1 pts)
3.04% of this doctor's prescriptions are opioid pain medications. Lower means more cautious prescribing.
Medicare Patients
151
Unique beneficiaries
Standard volumePrescription Recipients
111
Patients prescribed
Prescriptions Written
460
Total claims
Total Medicare drug cost: $1.49M
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 Hypertension, Cancer, and High Cholesterol.
High blood pressure — a leading risk factor for heart disease and stroke
US avg: 70.2%↑ More patients than average (+5%) — a focus area for this doctor
Diseases involving abnormal cell growth with potential to spread to other body parts
US avg: 20.8%↑ More patients than average (+53%) — a focus area for this doctor
Elevated cholesterol or triglycerides that increase heart disease risk
US avg: 70.4%↓ Fewer patients than average (-4%) — less common here
Joint inflammation causing pain, swelling, and stiffness
US avg: 49.3%↓ Fewer patients than average (-3%) — less common here
A condition where the body cannot properly regulate blood sugar levels
US avg: 34.5%↑ More patients than average (+6%) — a focus area for this doctor
Conditions affecting emotional state, including depression and bipolar disorder
A mood disorder causing persistent sadness and loss of interest in activities
US avg: 31.8%↑ More patients than average (+2%) — a focus area for this doctor
Gradual loss of kidney function over time, often linked to diabetes or hypertension
US avg: 29.6%↑ More patients than average (+2%) — a focus area for this doctor
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
$1.7k received from industry
11 transactions reported in 2024 ·Moderate tier
Payments include consulting fees, speaking honoraria, food & beverage, travel, research support, and ownership interests from drug and medical device manufacturers. Disclosure is required by the federal Physician Payments Sunshine Act. These payments do not necessarily indicate conflicts of interest. National median: $338 across 136 000 tracked providers.
Tiers — Low: under $500 · Moderate: $500-5 000 · High: $5 000-25 000 · Very High: $25 000+. Source: CMS Open Payments 2024, attributed to Olwen M Hahn's NPI.
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Graduated medical school · 2001
Emory University School of Medicine
25 years in practice
Experienced
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
Taxonomy: 207RH0003X
Education & Training
Emory University School of Medicine (Class of 2001)
Virtual Hematology & Oncology Care With Olwen M Hahn
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Olwen M Hahn for blood pressure monitoring, follow-up consultations, 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 Olwen M Hahn
Dr. Hahn 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: (773) 702-5381.
Sourced from CMS NPPES · OIG LEIE · CMS QPP 2023 · CMS Medicare Part D · CMS Open Payments 2024 · CMS Physician Comparator. See Data Methodology.
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Contact Olwen M Hahn
Practice Location
5841 S Maryland Ave Mc 2115, Chicago, IL 60637-1447
Mailing Address
5841 S Maryland Ave Mc 2115, Chicago, IL 60637-1447
This is a provider directory. Contact the office directly to schedule appointments.
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