Physician Profile
James Ralph Clark, M.D.
Unclaimed ProfileAbout Dr. Clark
Based in Downers Grove, IL, James Ralph Clark, M.D. is listed in the NPI registry under gastroenterology. James graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 1990. According to Medicare claims data, James cared for 736 Medicare patients across 898 services.
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
Specialty
Credentials & Licensing
Source: NPPES NPI Registry
Contact Information
- (630) 434-9312
- Email not available
Practice Locations
3825 HIGHLAND AVE TOWER 2 - SUITE 302
Downers Grove, IL 60515
Conditions Commonly Evaluated or Treated
Within Gastroenterology 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
- Acid Reflux
- Celiac disease
- Crohn's disease
- Hemorrhoids
- Irritable Bowel Syndrome
- Swallowing difficulties
- Ulcerative colitis
Procedures & services
Most searched procedures
Procedures Most Often Billed to Medicare
898 services · 736 patients · 14 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
95 |
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
70 |
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
59 |
| Balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm | Procedure | 43249 |
17 |
| Diagnostic exam of large bowel using a flexible endoscope | Procedure | 45378 |
16 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
190 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
161 |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
85 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
52 |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | Office visit | 99222 |
45 |
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 2
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 3
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 — 26 related providers in 4 groups
Other gastroenterology specialists in Downers Grove 2
Same specialty, same city.
Trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) 8
Other providers in the same specialty who trained at the same institution.
Class of 1990 at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) 8
Providers who graduated from the same medical school in the same year.
Also performs Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 8
Providers in IL who bill this service to Medicare most often.
Common questions
What does Dr. Clark specialize in?
Dr. Clark is a gastroenterology in Downers Grove, IL. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “GASTROENTEROLOGY”.
NPI registry
Where is Dr. Clark located?
Dr. Clark is listed at 3825 HIGHLAND AVE TOWER 2 - SUITE 302, Downers Grove, IL 60515. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Clark's phone number?
The number on file is (630) 434-9312. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Clark's NPI number?
Dr. Clark's National Provider Identifier is 1588640650. 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. Clark go to medical school?
Dr. Clark attended University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb), graduating in 1990. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Clark been practicing?
Dr. Clark has 36 years experience. Calculated from a graduation year of 1990, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Clark do most often?
According to Medicare billing data, Dr. Clark performs procedures including biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope, removal of polyps or growths of large bowel using an endoscope with mechanical snare 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
Has Dr. Clark confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Clark. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.