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Edit this profileAt a glance
- 17501 Generations Dr, South Bend, IN 46635
About Dr. Mathis
John G. Mathis, M.D. is a healthcare provider in South Bend, IN specializing in internal medicine. John trained at Indiana University School of Medicine, graduating in 1976. John is also listed as specializing in gastroenterology. Medicare claims data shows John provided 947 services to 894 patients. The services billed most often include removal of polyps or growths of large bowel using an endoscope with mechanical snare, established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, and biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope. This provider record is associated with NPI 1427051341.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (574) 234-0049
- Email not available
Practice Locations
17501 GENERATIONS DR
South Bend, IN 46635
Conditions Commonly Evaluated or Treated
Within Internal Medicine generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
- Allergies
- Diabetes
- Flu
- Hypothyroidism
- Strep throat
- UTI
Cardiometabolic
Digestive and liver
Endocrine, blood, and bone
Infectious disease
Kidney and urinary
Respiratory
Blood & Circulation
Blood disorders
- Anemia
Brain & Nerves
Brain and nerves
Cardiac and vascular
Digestive
Heart & Circulation
- Heart disease
Infections
- Impetigo
Kidney & Bladder
Lungs & Breathing
Mental Health
Neurologic and behavioral
Pain
Rheumatologic and pain
Procedures & services
Most searched procedures
- Annual physical
- Blood test
- Flu shot
- Medicare wellness visit
- Sick visit
- TB test
- Well-woman exam
Preventive and evaluation
- Medication management
- Post-hospital transitional care
Screening and diagnostic testing
Bones & Joints
Brain and nerves
Cancer screening
- Colon Cancer Screening Referral
- Mammogram Referral
Digestive
- Endoscopy
Exams & Consultations
- Pre-Op Clearance Exam
Heart & Circulation
- Blood Pressure Check
- Heart monitor
Heart health
- Cardiac Stress Test Referral
Imaging referral
- Abdominal Ultrasound Referral
Immunizations
Lab tests
Lungs & Breathing
- At-Home Sleep Study Order
Metabolic & Weight
- Weight Loss Injections and Medication
Minor procedures
- Ingrown toenail removal
- Suture removal
Office procedures
- Cryotherapy for skin lesions
- Earwax removal
- Incision and drainage of an abscess
- Skin biopsy
Office Procedures
- Skin Tag and Mole Removal
- Vitamin B12 Injections
- Wart Removal
Pain management
Preventive & Routine Care
- Smoking cessation counseling
Screenings & Diagnostics
- Bone Density Scan Referral
- Diabetes Screening and A1C Test
Sexual health
- STI Testing
Procedures Most Often Billed to Medicare
947 services · 894 patients · 16 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
188 | More than most peers in Internal Medicine |
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
122 | More often than most peers in Internal Medicine |
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
77 | More often than most peers in Internal Medicine |
| Insertion of guide wire with dilation of esophagus using a flexible endoscope | Procedure | 43248 |
56 | More often than most peers in Internal Medicine |
| Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43235 |
43 | More often than most peers in Internal Medicine |
| Diagnostic exam of large bowel using a flexible endoscope | Procedure | 45378 |
27 | More often than most peers in Internal Medicine |
| Control of bleeding of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43255 |
14 | As often as other peers in Internal Medicine |
| Balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm | Procedure | 43249 |
13 | Less often than most peers in Internal Medicine |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
157 | More often than most peers in Internal Medicine |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Office visit | 99223 |
94 | More often than most peers in Internal Medicine |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other internists at this location 4
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 5
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 2
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 27 related providers in 4 groups
Other internists in South Bend 7
Same specialty, same city.
Trained at Indiana University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1976 at Indiana University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Removal of polyps or growths of large bowel using an endoscope with mechanical snare 4
Providers in IN who bill this service to Medicare most often.
Common questions
What does John G. Mathis specialize in?
John G. Mathis is an internist in South Bend, IN. That is the designation recorded for this NPI in the federal registry, where it is listed as “Internal Medicine”.
NPI registry
Where is John G. Mathis located?
John G. Mathis is listed at 17501 Generations Dr, South Bend, IN 46635. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is John G. Mathis's phone number?
The number on file is (574) 234-0049. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for John G. Mathis?
John G. Mathis's National Provider Identifier is 1427051341. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did John G. Mathis train?
John G. Mathis attended Indiana University School of Medicine, graduating in 1976. This comes from the CMS National Downloadable File.
CMS public data
How much experience does John G. Mathis have?
John G. Mathis has 50 years experience. Calculated from a graduation year of 1976, reported in the CMS National Downloadable File.
CMS public data
What does John G. Mathis do most often?
According to Medicare billing data, John G. Mathis performs procedures including removal of polyps or growths of large bowel using an endoscope with mechanical snare, biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope and biopsy of large bowel using a flexible endoscope, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is John G. Mathis's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by John G. Mathis. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.