Donald J. Hermens, M.D.
Gastroenterology Physician · Quincy, IL
Donald J. Hermens, M.D. is a gastroenterology physician with a practice address in Quincy, Illinois, and NPI 1962475442, issued on Feb 7, 2006. Check the license (Illinois 036101026, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Donald J. Hermens
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 036101026 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1025 Maine St, Quincy, IL 62301
- Phone
- (217) 222-6550
- Enumerated
- Feb 7, 2006
- Record last updated
- Dec 15, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 036101026 IL
- Medicare enrollment
- Enrolled (PECOS I20140501001673); accepts Medicare assignment
- Medical or professional school
- Creighton University School Of Medicine, 1985
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 887 in Illinois → Look up another NPI →
Also registered at 1025 Maine St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Amanda Adams, OTOccupational Therapist1205038213
- Erin Adams, MOTR/LOccupational Therapist1144453416
- Tawny Allen, DOFamily Medicine Physician1255319844
- Dana Altman, DOFamily Medicine Physician1043298532
- Halley Anderson, DOGeriatric Medicine (Family Medicine) Physician1427495803
Verify Donald J. Hermens 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 036101026Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.2 times the Medicare Part D claims of the average gastroenterology physician in 2024
1,787 Medicare Part D claims for 842 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.
Most prescribed
- Gavilyte-C599 claims
- Pantoprazole Sodium274 claims
- Budesonide Dr100 claims
- Mesalamine71 claims
- Cholestyramine60 claims
- Dicyclomine Hcl60 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: $44.27
1 payment: food and beverage; the largest payer was Boston Scientific Corporation. 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
- Permanente Medical Group IncFresno, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Donald J. Hermens among 887 gastroenterology physician records in Illinois
Donald J. Hermens, M.D. is one of 887 gastroenterology 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 15% of them.
- NPI issued2006 · 15% of these records are older, 52% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1985 · median 2003 among the 643 with a school on file
- Record last updated2021 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Illinois
There are 887 gastroenterology physician records in Illinois.
All 887 in Illinois → Every provider in Quincy → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- John Barbagiovanni, DOQuincy, IL 623011437138781
- John Bozdech, MDQuincy, IL 623011841279213
- Elie Ghoulam, MDQuincy, IL 623011699216887
- Daniel Moore, M.D.Quincy, IL 623011750576641
- Adam Niemann, MDQuincy, IL 623011780188292
- Kartikeya Tripathi, M.D.Quincy, IL 623011003269200
- Charmaine Edwards, M.D.Red Bud, IL 622781972586253
- Peter Kim, M.D.Highland, IL 622491942250030
Common questions
What is Donald J. Hermens, M.D.'s NPI number?
Donald J. Hermens, M.D.'s National Provider Identifier (NPI) is 1962475442, issued on Feb 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Donald J. Hermens, M.D. located?
The NPPES record lists a practice address at 1025 Maine St, Quincy, IL, 62301. Phone: (217) 222-6550. Providers update this record themselves, so call before visiting.
How can I verify Donald J. Hermens, M.D.'s license?
NPPES lists Illinois license number 036101026, 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 Donald J. Hermens, M.D. prescribe under Medicare Part D?
In 2024, Donald J. Hermens, M.D. had 1,787 Medicare Part D claims for 842 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.