Rockford Glenn Yapp, M.D., M.P.H.
Gastroenterology Physician · Downers Grove, IL
Rockford Glenn Yapp, M.D., M.P.H. is a gastroenterology physician with a practice address in Downers Grove, Illinois, and NPI 1356327910, issued on Dec 15, 2005. Check the license on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Rockford Glenn Yapp
- Credential
- M.D., M.P.H.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- Practice location
- 3825 Highland Ave, Downers Grove, IL 60515
- Phone
- (630) 434-9312
- Enumerated
- Dec 15, 2005
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (630) 434-9360
- Medicaid ID
- 036-72055 IL
- Medicare enrollment
- Enrolled (PECOS I20040409000100); accepts Medicare assignment
- Medical or professional school
- University Of Nebraska College Of Medicine, 1984
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 3825 Highland Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mani Akkineni, M.D.Specialist1467456186
- Medha Amin, MDObstetrics Physician1912197534
- Teresita Avila, M.D.Specialist1386649317
- Lara Bakhos, M.D.Cardiovascular Disease Physician1730336652
- Jennifer Balash, M.D.Obstetrics & Gynecology Physician1487881025
- Shamita Bansore, MDObstetrics & Gynecology Physician1700813771
Verify Rockford Glenn Yapp in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional RegulationCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% more Medicare Part D claims than the average gastroenterology physician in 2024
1,490 Medicare Part D claims for 492 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.
Most prescribed
- Omeprazole522 claims
- Sod Sulf-Potass Sulf-Mag Sulf135 claims
- Pantoprazole Sodium84 claims
- Esomeprazole Magnesium78 claims
- Linzess58 claims
- Mesalamine50 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $85,173.71
233 payments; by number, the most common kind was food and beverage; the largest payer was Phathom Pharmaceuticals, Inc. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- GI Partners OF Illinois LLCLibertyville, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gastroenterology Physician providers in Illinois
There are 887 gastroenterology physician records in Illinois.
Other gastroenterology physician records in Illinois
- Abdul Aadam, M.D.Chicago, IL1013038744
- Richard Aaronson, M.D.Olympia Fields, IL1578520656
- Abdelhai Abdelqader, MDMaywood, IL1073931127
- Mustafa Abdul-Hussein, MDMattoon, IL1972759173
- Abdullah AbdussalamDes Plaines, IL1932442613
- Ayokunle Abegunde, M.D.Maywood, IL1194031435
- Majd Aboona, MDChicago, IL1386347789
- James Abraham, MDNaperville, IL1427276732
- Rana Abraham, M.D., M.S.Chicago, IL1437318516
- Frida Abrahamian, MDChicago, IL1447274279
Common questions
What is Rockford Glenn Yapp, M.D., M.P.H.'s NPI number?
Rockford Glenn Yapp, M.D., M.P.H.'s National Provider Identifier (NPI) is 1356327910, issued on Dec 15, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Rockford Glenn Yapp, M.D., M.P.H. located?
The NPPES record lists a practice address at 3825 Highland Ave, Downers Grove, IL, 60515. Phone: (630) 434-9312. Providers update this record themselves, so call before visiting.
How can I verify Rockford Glenn Yapp, M.D., M.P.H.'s license?
Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Rockford Glenn Yapp, M.D., M.P.H. prescribe under Medicare Part D?
In 2024, Rockford Glenn Yapp, M.D., M.P.H. had 1,490 Medicare Part D claims for 492 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.