Gregory Stephen Sayuk, MD
Gastroenterology Physician · Saint Louis, MO
Gregory Stephen Sayuk, MD is a gastroenterology physician with a practice address in Saint Louis, Missouri, and NPI 1760494280, issued on Aug 13, 2006. Check the license (Missouri 2001025582, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Gregory Stephen Sayuk
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 2001025582 MO
Self-reported in NPPES; status is on the state search - Practice location
- 915 N Grand Blvd, Saint Louis, MO 63106
- Phone
- (314) 289-6434
- Enumerated
- Aug 13, 2006
- Record last updated
- May 7, 2024
- Medicaid ID
- 200743607 MO
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 414 in Missouri → Look up another NPI →
Also registered at 915 N Grand Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nagla Abdelmalek, M.D.Emergency Medicine Physician1003847591
- Stephanie AdamsRegistered Nurse1003755810
- Jessica Addai, RNRegistered Nurse1225475171
- Bernadette Addison-TannerCase Management Registered Nurse1750143566
- Oluwafunmilayo Adebayo-Adonis, MDCritical Care Medicine (Anesthesiology) Physician1437593613
- Oluwatoyin Adegboyega, FNPFamily Nurse Practitioner1932724614
Verify Gregory Stephen Sayuk in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license 2001025582Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $314,533.50
251 payments; by number, the most common kind was food and beverage; the largest payer was Genzyme 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.
Gregory Stephen Sayuk among 414 gastroenterology physician records in Missouri
Gregory Stephen Sayuk, MD is one of 414 gastroenterology physician records with a practice address in Missouri. 84% 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 14% of them.
- NPI issued2006 · 14% of these records are older, 47% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileNo · 73% of these records are
- Record last updated2024 · 47% 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 Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Missouri
There are 414 gastroenterology physician records in Missouri.
All 414 in Missouri → Every provider in Saint Louis → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Sami Almaskeen, M.D.Saint Louis, MO 631061992969307
- Jill Elwing, MDSaint Louis, MO 631061821022682
- Melissa Kaltenbach, M.D.Saint Louis, MO 631061770945206
- Marc Levin, MDSaint Louis, MO 631061861423378
- Mauricio Lisker Melman, MDSaint Louis, MO 631061366468670
- Matthew Nissing, MDSaint Louis, MO 631061558324418
- Luqman Baloch, M.D.Saint Louis, MO 631041144753062
- Alex Befeler, MDSaint Louis, MO 631041881602753
Common questions
What is Gregory Stephen Sayuk, MD's NPI number?
Gregory Stephen Sayuk, MD's National Provider Identifier (NPI) is 1760494280, issued on Aug 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Stephen Sayuk, MD located?
The NPPES record lists a practice address at 915 N Grand Blvd, Saint Louis, MO, 63106. Phone: (314) 289-6434. Providers update this record themselves, so call before visiting.
How can I verify Gregory Stephen Sayuk, MD's license?
NPPES lists Missouri license number 2001025582, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
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.