John R. Groll, M.D.
Cardiovascular Disease Physician · Chester, IL
John R. Groll, M.D. is a cardiovascular disease physician with a practice address in Chester, Illinois, and NPI 1396716163, issued on Jan 30, 2006. Check the license (Illinois 036-094904, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- John R. Groll
- Credential
- M.D.
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License numbers
- 036-094904 IL
R8J11 MO
Self-reported in NPPES; status is on the state search - Practice location
- 1900 State St, Chester, IL 62233
- Phone
- (618) 826-4581
- Enumerated
- Jan 30, 2006
- Record last updated
- Jul 20, 2023
- Fax
- (318) 826-5152
- Medicare enrollment
- Enrolled (PECOS I20031117000133); accepts Medicare assignment
- Medical or professional school
- University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 1988
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 1,073 in Illinois → Look up another NPI →
Also registered at 1900 State St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Angela Albertini, PA-CPhysician Assistant1386979839
- Monica Anil Lukose, MDFamily Medicine Physician1750951679
- Valerie Blechle, MSNNurse Practitioner1508114620
- Anna Burmester, PTAPhysical Therapy Assistant1740900398
- Cassandra Chambers, APRNNurse Practitioner1356995401
- Mindy Dudenbostel, CNPFamily Nurse Practitioner1447603246
Verify John R. Groll in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036-094904Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
61% fewer Medicare Part D claims than the average cardiovascular disease physician in 2024
1,196 Medicare Part D claims for 213 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 22% of claims.
Most prescribed
- Amlodipine Besylate109 claims
- Eliquis86 claims
- Losartan Potassium79 claims
- Metoprolol Tartrate73 claims
- Lisinopril67 claims
- Atorvastatin Calcium62 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: $37.88
2 payments; by number, the most common kind was food and beverage; the largest payer was Siemens Medical Solutions USA, Inc. The 16,686 providers of this specialty with any payment received $3,819.56 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.
One hospital affiliation
- Memorial HospitalChester, IL · Acute Care Hospitals5 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
John R. Groll among 1,073 cardiovascular disease physician records in Illinois
John R. Groll, M.D. is one of 1,073 cardiovascular disease physician records with a practice address in Illinois. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 50% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1988 · median 2001 among the 688 with a school on file
- Record last updated2023 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1 cardiovascular disease physician record lists a practice address in Chester
They are 1 of the 66 NPPES records with a practice address in Chester, and 1,073 cardiovascular disease physician records in Illinois.
All 1,073 in Illinois → Every provider in Chester → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- Andrew Berdy, MDBelleville, IL 622261821425067
- Michael Brown, MDBelleville, IL 622261386817468
- Sunil Darbari, MDBelleville, IL 622261932197290
- Michael Fleissner, MDBelleville, IL 622261942289459
- Sultan Hayat, MDBelleville, IL 622261548248453
- John Lehman, MDBelleville, IL 622261568480374
- Amanullah Pathan, MDBelleveille, IL 622261093749699
- Bulent Dincer, M.D.Belleville, IL 622211609962992
Common questions
What is John R. Groll, M.D.'s NPI number?
John R. Groll, M.D.'s National Provider Identifier (NPI) is 1396716163, issued on Jan 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John R. Groll, M.D. located?
The NPPES record lists a practice address at 1900 State St, Chester, IL, 62233. Phone: (618) 826-4581. Providers update this record themselves, so call before visiting.
How can I verify John R. Groll, M.D.'s license?
NPPES lists Illinois license number 036-094904, as entered by the provider. 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 John R. Groll, M.D. prescribe under Medicare Part D?
In 2024, John R. Groll, M.D. had 1,196 Medicare Part D claims for 213 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. 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.