NPPES file of Aug 9, 2026

Eric Martin Sieloff, MD

Gastroenterology Physician · Kalamazoo, MI

Eric Martin Sieloff, MD is a gastroenterology physician with a practice address in Kalamazoo, Michigan, and NPI 1831627322, issued on May 26, 2017. Check the license (Michigan 4301507313, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1831627322
Name
Eric Martin Sieloff
Credential
MD
Primary taxonomy
Gastroenterology Physician 207RG0100X
License number
4301507313 MI
Self-reported in NPPES; status is on the state search
Practice location
601 John St Ste M-302, Kalamazoo, MI 49007
Phone
(269) 349-2266
Enumerated
May 26, 2017
Record last updated
Jul 25, 2024
Medicare enrollment
Enrolled (PECOS I20240806002942); accepts Medicare assignment
Medical or professional school
University Of Texas Medical Branch At Galveston, 2017
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 601 John St Ste M-302

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Kristen BuddenPhysician Assistant1699549493
  2. Jessica DouglassAdult Health Nurse Practitioner1457799009
  3. Mark Kocab, MDGastroenterology Physician1942271606
  4. Victor Velocci, M.D.Gastroenterology Physician1700131505

Verify Eric Martin Sieloff in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
    Search for license 4301507313
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Michigan license search

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90% fewer Medicare Part D claims than the average gastroenterology physician in 2024

83 Medicare Part D claims for 56 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.

  1. Eric Sieloff83
  2. Specialty average811

Most prescribed

  1. Gavilyte-G24 claims
  2. Pantoprazole Sodium16 claims
  3. Omeprazole13 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: $625.71

18 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.

  1. Eric Sieloff$625.71
  2. Specialty average$5,015.95

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

One hospital affiliation

  1. Bronson Methodist HospitalKalamazoo, MI · Acute Care Hospitals4 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.

Eric Martin Sieloff among 550 gastroenterology physician records in Michigan

Eric Martin Sieloff, MD is one of 550 gastroenterology physician records with a practice address in Michigan. 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 2017, is newer than 89% of them.

  • NPI issued2017 · 89% of these records are older, 9% newer
  • In a Medicare fileYes · 85% of these records are
  • In the CMS Doctors and Clinicians fileYes · 75% of these records are
  • Graduated2017 · median 2003 among the 415 with a school on file
  • Record last updated2024 · 52% 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 Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Gastroenterology Physician providers in Michigan

There are 550 gastroenterology physician records in Michigan.

The 8 gastroenterology physician records with the nearest ZIP codes

  1. Jerrold Falk, M.D.Kalamazoo, MI 490071063469989
  2. Mark Kocab, MDKalamazoo, MI 490071942271606
  3. Mark McCormick, M.D.Kalamazoo, MI 490071659358661
  4. John Quertermus, M.D.Kalamazoo, MI 490071225015209
  5. Victor Velocci, M.D.Kalamazoo, MI 490071700131505
  6. Tooba Tariq, M.D.Battle Creek, MI 490151982054664
  7. Shahid Aziz, DOPortage, MI 490241588616205
  8. Allan Barbish, M.D.Portage, MI 490241891743191

Common questions

What is Eric Martin Sieloff, MD's NPI number?

Eric Martin Sieloff, MD's National Provider Identifier (NPI) is 1831627322, issued on May 26, 2017. An NPI identifies a provider in billing; it is not a license.

Where is Eric Martin Sieloff, MD located?

The NPPES record lists a practice address at 601 John St Ste M-302, Kalamazoo, MI, 49007. Phone: (269) 349-2266. Providers update this record themselves, so call before visiting.

How can I verify Eric Martin Sieloff, MD's license?

NPPES lists Michigan license number 4301507313, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Eric Martin Sieloff, MD prescribe under Medicare Part D?

In 2024, Eric Martin Sieloff, MD had 83 Medicare Part D claims for 56 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.