Katherine A Diemer, MD
Katherine A Diemer is a Family Medicine specialist based in Freeport, IL with over 20 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
Patients across IL can see Katherine a Diemer, MD in person in Freeport or via virtual visit — no travel required. A Rush Medical College of Rush University graduate since 2006, she brings 20+ years of experience. CMS Medicare data shows her patients commonly have hypertension, high cholesterol, and arthritis.
At a glance
- Prescribes opioids less than 18% of reporting doctors in Illinois
- Uses generic medications more than 50% of reporting doctors in Illinois
- Virtual visits available — no app or travel required
Older · 1982dNPPES updated 2020-12-18 · verify NPI on CMS · Verify license at Illinois Department of Financial & Professional Regulation — Medical
How Does This Doctor Compare?
Based on Medicare data, this doctor prescribes opioid pain medications conservatively, favors affordable generic drugs over brand-name ones.
Opioid Rx
↓ Lower = better4.9%
Illinois avg: 4.5 · US avg: 5.1
✓ Higher than most doctors nationally(-0.2 pts)
4.9% of this doctor's prescriptions are opioid pain medications. Lower means more cautious prescribing.
Generic Rx
↑ Higher = better88%
Illinois avg: 82.9 · US avg: 82.8
✓ Higher than most doctors nationally(+5.2 pts)
Typical range among reporting doctors in IllinoisHow often this doctor prescribes affordable generic drugs instead of expensive brand-name ones.
Medicare Patients
202
Unique beneficiaries
Standard volumePrescription Recipients
499
Patients prescribed
Prescriptions Written
6,281
Total claims
Total Medicare drug cost: $595k
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, High Cholesterol, and Arthritis.
High blood pressure — a leading risk factor for heart disease and stroke
US avg: 70.2%↑ More patients than average (+1%) — a focus area for this doctor
Elevated cholesterol or triglycerides that increase heart disease risk
US avg: 70.4%↓ Fewer patients than average (-13%) — less common here
Joint inflammation causing pain, swelling, and stiffness
US avg: 49.3%↓ Fewer patients than average (-12%) — less common here
A condition where the body cannot properly regulate blood sugar levels
US avg: 34.5%↓ 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 (-12%) — less common here
Conditions affecting emotional state, including depression and bipolar disorder
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 · 2006
Rush Medical College
Board certified · Dec 17, 2020
Self-reported via NPPES
20 years in practice
Experienced
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
Taxonomy: 207Q00000X
Education & Training
Rush Medical College of Rush University (Class of 2006)
Mailing address
515 22nd Ave, Monroe, WI 53566-1569
Differs from practice location
Virtual Family Medicine Care With Katherine a Diemer
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Katherine a Diemer for blood pressure monitoring, cholesterol management, arthritis follow-ups — no travel to Freeport 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 Katherine a Diemer
Dr. Diemer is listed as active in the NPI registry with telehealth listed in Freeport, IL. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (815) 235-1406.
Sourced from CMS NPPES · OIG LEIE · CMS Medicare Part D · CMS Physician Comparator. See Data Methodology.
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Contact Katherine a Diemer
Practice Location
1301 Kiwanis Dr, Freeport, IL 61032-6907
Mailing Address
515 22nd Ave, Monroe, WI 53566-1569
This is a provider directory. Contact the office directly to schedule appointments.
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