Robert M. Siwiec, M.D.
Gastroenterology Internal Medicine
Robert M. Siwiec is a Gastroenterology Internal Medicine specialist based in Carmel, IN with over 20 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
Also practices: INTERNAL MEDICINE
Robert M. Siwiec, M.D. has practiced internal medicine for 20+ years, working in group practice. With 20+ years of experience, he has been practicing in the Carmel area. Among his Medicare patients, common conditions include hypertension, high cholesterol, and arthritis (per CMS data).
Older · 439dNPPES updated 2025-03-11 · verify NPI on CMS · Verify license at Indiana Medical Licensing Board
Contact & Location
Practice Location
11725 Illinois St Ste 275, Carmel, IN 46032-3009
How Does This Doctor Compare?
Generic Rx
↑ Higher = better79.1%
Indiana avg: 83.4 · US avg: 82.8
⚠ Lower than most doctors nationally(-3.7 pts)
How often this doctor prescribes affordable generic drugs instead of expensive brand-name ones.
Medicare Patients
331
Unique beneficiaries
Standard volumePrescription Recipients
221
Patients prescribed
Prescriptions Written
981
Total claims
Total Medicare drug cost: $471k
Percentile rankings compared against 557 reporting peers in Indiana.
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%↓ Fewer patients than average (-1%) — less common here
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
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 (+5%) — a focus area for this doctor
Excessive worry or fear that interferes with daily life
US avg: 34.1%↓ Fewer patients than average (-1%) — less common here
A condition where the body cannot properly regulate blood sugar levels
US avg: 34.5%↓ Fewer patients than average (-6%) — less common here
Reduced blood flow to the heart muscle, commonly known as coronary artery disease
US avg: 31.7%↓ Fewer patients than average (-5%) — 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.
Board certified · Mar 10, 2025
Self-reported via NPPES
20 years in practice
Experienced
Gastroenterologists diagnose and treat digestive system disorders including GERD, irritable bowel syndrome (IBS), inflammatory bowel disease (Crohn's, ulcerative colitis), liver disease, pancreatitis, and colon polyps. They perform endoscopies and colonoscopies.
Taxonomy: 207RG0100X
Mailing address
250 N Shadeland Ave Ste 130 Provider Enrollment, Indianapolis, IN 46219-4959
Differs from practice location
Virtual Internal Medicine Care With Robert M. Siwiec
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Robert M. Siwiec for blood pressure monitoring, cholesterol management, arthritis follow-ups — no travel to Carmel 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 Robert M. Siwiec
NPI records show Dr. Siwiec as active with telehealth listed in Carmel, IN. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (317) 944-0980.
Sourced from CMS NPPES · OIG LEIE · CMS Medicare Part D · CMS Physician Comparator. See Data Methodology.
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Contact Robert M. Siwiec
Practice Location
11725 Illinois St Ste 275, Carmel, IN 46032-3009
Mailing Address
250 N Shadeland Ave Ste 130 Provider Enrollment, Indianapolis, IN 46219-4959
This is a provider directory. Contact the office directly to schedule appointments.
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