Physician Profile
Rockford G. Yapp, M.D., MPH
Unclaimed ProfileAbout Dr. Yapp
Based in Downers Grove, IL, Rockford G. Yapp, M.D., MPH is listed in the NPI registry under gastroenterology. Rockford graduated from University of Nebraska College of Medicine in 1984. According to Medicare claims data, Rockford cared for 927 Medicare patients across 1,158 services. The services billed most often include established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more. NPI 1356327910 identifies this record in the national registry.
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
- (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
- IBS
- Swallowing difficulties
- Ulcerative colitis
Biliary and pancreas
- Acute pancreatitis
- Gallstones
- Pancreatic cysts
- Primary sclerosing cholangitis
Colon and anorectal
Esophagus and swallowing
- Barrett's esophagus
- Eosinophilic esophagitis
- Esophageal stricture
- Esophagitis
Functional bowel and motility
- Chronic diarrhea
- Fecal incontinence
- Small intestinal bacterial overgrowth
Liver
- Ascites
- Autoimmune hepatitis
- Cirrhosis
- Fatty liver disease
- Hemochromatosis
- Hepatitis B
- Hepatitis C
- Portal hypertension
Stomach and duodenum
- Functional dyspepsia
- Gastritis
- Gastroparesis
- H. pylori infection
- Peptic ulcer disease
Bowel & Colon
Digestive Symptoms
- Constipation
Gallbladder & Bile Ducts
- Blocked Bile Duct
Procedures & services
Most searched procedures
- Colonoscopy
- Endoscopy
- Gallbladder removal
- Hernia repair
- Liver biopsy
Lower endoscopy
- Colon polyp removal
- Endoscopic control of gastrointestinal bleeding
- Flexible sigmoidoscopy
Upper endoscopy
- Endoscopic submucosal dissection
- Esophageal dilation
Capsule and physiology testing
- Anorectal manometry
- Capsule endoscopy
- Esophageal manometry
Diagnostic Testing
- 24-Hour Acid Reflux Test
- EUS-Guided Fine Needle Biopsy
- H. Pylori Breath Test
- SIBO Breath Test
Liver procedures
- Esophageal variceal banding
- Liver elastography
- Paracentesis
Treatments
- Stool Transplant
Procedures Most Often Billed to Medicare
1,158 services · 927 patients · 17 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
141 | More often than most peers in Gastroenterology |
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
50 | As often as other peers in Gastroenterology |
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
49 | As often as other peers in Gastroenterology |
| Insertion of guide wire with dilation of esophagus using a flexible endoscope | Procedure | 43248 |
13 | Less often than most peers in Gastroenterology |
| Balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm | Procedure | 43249 |
12 | Less often than most peers in Gastroenterology |
| Ultrasound scan of organ tissue for measuring elasticity | Imaging | 76981 |
46 | More often than most peers in Gastroenterology |
| Measurement of liver stiffness | Treatment | 91200 |
13 | Less often than most peers in Gastroenterology |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
323 | More than most peers in Gastroenterology |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
138 | More often than most peers in Gastroenterology |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
126 | More often than most peers in Gastroenterology |
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 gastroenterologists at this location 1
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 — 27 related providers in 4 groups
Other gastroenterologists in Downers Grove 3
Same specialty, same city.
Trained at University of Nebraska College of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1984 at University of Nebraska College of Medicine 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 Rockford G. Yapp, M.D. specialize in?
Rockford G. Yapp, M.D. is a gastroenterologist in Downers Grove, IL. That is the designation recorded for this NPI in the federal registry, where it is listed as “Gastroenterology”.
NPI registry
Where is Rockford G. Yapp, M.D. located?
Rockford G. Yapp, M.D. 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 Rockford G. Yapp, M.D.'s phone number?
The number on file is (630) 434-9312. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Rockford G. Yapp, M.D.'s NPI number?
Rockford G. Yapp, M.D.'s National Provider Identifier is 1356327910. 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 Rockford G. Yapp, M.D. train?
Rockford G. Yapp, M.D. attended University of Nebraska College of Medicine, graduating in 1984. This comes from the CMS National Downloadable File.
CMS public data
How long has Rockford G. Yapp, M.D. been practicing?
Rockford G. Yapp, M.D. has 42 years experience. Calculated from a graduation year of 1984, reported in the CMS National Downloadable File.
CMS public data
What does Rockford G. Yapp, M.D. do most often?
According to Medicare billing data, Rockford G. Yapp, M.D. 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; reads or performs imaging such as ultrasound scan of organ tissue for measuring elasticity; provides treatments such as measurement of liver stiffness, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Rockford G. Yapp, M.D. confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Rockford G. Yapp, M.D.. If this is you, claiming it is free.
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