John R Douglas Peterson, M.D.
Gastroenterology Physician · Washington, MO
John R Douglas Peterson, M.D. is a gastroenterology physician with a practice address in Washington, Missouri, and NPI 1164639274, issued on May 17, 2007. Check the license (Missouri 2016004841, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- John R Douglas Peterson
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License numbers
- 2016004841 MO
35499 SC
Self-reported in NPPES; status is on the state search - Practice location
- 901 Patients First Dr Ste 3300, Washington, MO 63090
- Phone
- (636) 239-7344
- Enumerated
- May 17, 2007
- Record last updated
- Jan 14, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20160614002154); accepts Medicare assignment
- Medical or professional school
- Tulane University School Of Medicine, 2006
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 414 in Missouri → Look up another NPI →
Also registered at 901 Patients First Dr Ste 3300
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Andrea Strothcamp, FNPFamily Nurse Practitioner1710552757
Verify John R Douglas Peterson 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 2016004841Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
79% more Medicare Part D claims than the average gastroenterology physician in 2024
1,453 Medicare Part D claims for 657 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Ondansetron Hcl487 claims
- Gavilyte-C347 claims
- Gavilyte-G71 claims
- Nortriptyline Hcl67 claims
- Omeprazole64 claims
- Sod Sulf-Potass Sulf-Mag Sulf62 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: $13.85
1 payment: food and beverage; the largest payer was Sumitomo Pharma America, 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.
Bills Medicare through 2 group practices
- Digestive Health Specialists LLCCreve Coeur, MO
- Mercy Clinic Gastroenterology LLCLake St Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John R Douglas Peterson among 414 gastroenterology physician records in Missouri
John R Douglas Peterson, M.D. 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 2007, is newer than 53% of them.
- NPI issued2007 · 53% of these records are older, 40% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated2006 · median 2003 among the 303 with a school on file
- Record last updated2020 · 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 Washington → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Carl Blatt, M.D.Washington, MO 630901447292123
- Nicholas Frederickson, M.D.Washington, MO 630901154640225
- Sheetal Sharma, M.D.Washington, MO 630901538328885
- Leslie Tucker, M.D.Washington, MO 630901699718643
- Barbara Dixon-Scott, M.D., PH.D.Sullivan, MO 630801669418216
- Steven Fern, DOSullivan, MO 630801417982760
- Luqman Baloch, M.D.Saint Louis, MO 631041144753062
- Alex Befeler, MDSaint Louis, MO 631041881602753
Common questions
What is John R Douglas Peterson, M.D.'s NPI number?
John R Douglas Peterson, M.D.'s National Provider Identifier (NPI) is 1164639274, issued on May 17, 2007. An NPI identifies a provider in billing; it is not a license.
Where is John R Douglas Peterson, M.D. located?
The NPPES record lists a practice address at 901 Patients First Dr Ste 3300, Washington, MO, 63090. Phone: (636) 239-7344. Providers update this record themselves, so call before visiting.
How can I verify John R Douglas Peterson, M.D.'s license?
NPPES lists Missouri license number 2016004841, 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.
How much does John R Douglas Peterson, M.D. prescribe under Medicare Part D?
In 2024, John R Douglas Peterson, M.D. had 1,453 Medicare Part D claims for 657 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.