John Martin Vainder, MD
Gastroenterology Physician · Evanston, IL
John Martin Vainder, MD is a gastroenterology physician with a practice address in Evanston, Illinois, and NPI 1508858226, issued on Aug 18, 2005. Check the license (Illinois 036-057977, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- John Martin Vainder
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 036-057977 IL
Self-reported in NPPES; status is on the state search - Practice location
- 800 Austin St, Evanston, IL 60202
- Phone
- (847) 491-9020
- Enumerated
- Aug 18, 2005
- Record last updated
- Feb 19, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (847) 491-0182
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 887 in Illinois → Look up another NPI →
Also registered at 800 Austin St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John Martin Vainder 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 036-057977Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
23% fewer Medicare Part D claims than the average gastroenterology physician in 2024
627 Medicare Part D claims for 299 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Famotidine176 claims
- Pantoprazole Sodium102 claims
- Gavilyte-G81 claims
- Peg-3350 And Electrolytes29 claims
- Sod Sulf-Potass Sulf-Mag Sulf27 claims
- Tenofovir Disoproxil Fumarate25 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 85.1 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $293.36
16 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Biotech, 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.
John Martin Vainder among 887 gastroenterology physician records in Illinois
John Martin Vainder, MD 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 85% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileNo · 72% of these records are
- Record last updated2015 · 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 Evanston → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Harsh Gupta, MDEvanston, IL 602021295727436
- Daksesh Patel, D.O.Evanston, IL 602021154526770
- Laura Bianchi, MDEvanston, IL 602011932231115
- Sarah Burroughs, DOEvanston, IL 602011447755434
- Laura Fernandez Morales, MDEvanston, IL 602011417535469
- Natalia Filipek, MDEvanston, IL 602011891310090
- Anuhya Gampa, M.D.Evanston, IL 602011588045165
- Michael Goldberg, MDEvanston, IL 602011134159064
Common questions
What is John Martin Vainder, MD's NPI number?
John Martin Vainder, MD's National Provider Identifier (NPI) is 1508858226, issued on Aug 18, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John Martin Vainder, MD located?
The NPPES record lists a practice address at 800 Austin St, Evanston, IL, 60202. Phone: (847) 491-9020. Providers update this record themselves, so call before visiting.
How can I verify John Martin Vainder, MD's license?
NPPES lists Illinois license number 036-057977, 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 Martin Vainder, MD prescribe under Medicare Part D?
In 2024, John Martin Vainder, MD had 627 Medicare Part D claims for 299 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is John Martin Vainder, MD's MIPS final score?
The 2023 MIPS final score is 85.1 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.