Physician Profile
Unclaimed ProfileAbout REX
Douglas K Rex, M.D. practices gastroenterology in Indianapolis, IN. Douglas is a 1980 graduate of Indiana University School of Medicine. Medicare claims data shows Douglas provided 1,261 services to 1,200 patients.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (317) 278-8741
- Email not available
Practice Locations
550 UNIVERSITY BLVD UH 4100
Indianapolis, IN 46202
Procedures Most Often Billed to Medicare
1,261 services · 1,200 patients · 14 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
526 |
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
148 |
| Removal of large bowel tissue using a flexible endoscope | Procedure | 45390 |
88 |
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
76 |
| Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43235 |
33 |
| Insertion of guide wire with dilation of esophagus using a flexible endoscope | Procedure | 43248 |
20 |
| Balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm | Procedure | 43249 |
19 |
| Removal of polyps or growths of esophagus, stomach, and/or upper small bowel using an endoscope with mechanical snare | Procedure | 43251 |
13 |
| Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more | Office visit | 99212 |
145 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
97 |
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 gastroenterology specialists at this location 1
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 1
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 30 related providers in 4 groups
Other gastroenterology specialists in Indianapolis 8
Same specialty, same city.
Trained at Indiana University School of Medicine 7
Other providers in the same specialty who trained at the same institution.
Class of 1980 at Indiana University School of Medicine 7
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 8
Providers in IN who bill this service to Medicare most often.
Common questions
What does Dr. Rex specialize in?
Dr. Rex is a gastroenterology in Indianapolis, IN. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “GASTROENTEROLOGY”.
NPI registry
Where is Dr. Rex located?
Dr. Rex is listed at 550 UNIVERSITY BLVD UH 4100, Indianapolis, IN 46202. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Rex's phone number?
The number on file is (317) 278-8741. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Rex?
Dr. Rex's National Provider Identifier is 1164486643. 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 Dr. Rex go to medical school?
Dr. Rex attended Indiana University School of Medicine, graduating in 1980. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Rex have?
Dr. Rex has 46 years experience. Calculated from a graduation year of 1980, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Rex do most often?
According to Medicare billing data, Dr. Rex 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 removal of large bowel tissue 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 Dr. Rex's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Rex. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.