Dr. Gregory A. Schnell, MD
- Medicare services, 2024
- 3,844
- Medicare patients, 2024
- 525
- Part D claims, 2024
- 1,570
- Publications
- 17
- Clinical trials
- 1
- Practice address
- 1300 NW Briarcliff Pkwy, Riverside, MO 64150
- Practice phone
- Call (816) 478-4887
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Digestive Health Specialists
Riverside, Missouri
Find Dr. Schnell's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Gregory A. Schnell is a gastroenterologist in Riverside, Missouri
Dr. Schnell practices at Digestive Health Specialists in Riverside, Missouri.
Dr. Schnell's NPI, 1609835818, was assigned on March 17, 2006. Dr. Schnell graduated from University of Kansas School of Med (KC/Wich/Sal) in 1982. Dr. Schnell holds Missouri license R2E81.
- NPI
- 1609835818NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8123062841
- NPI enumeration date
- March 17, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (816) 478-4887
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 70
- Medical school graduation
- 1982
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gregory A. Schnell practices at Digestive Health Specialists in Riverside, Missouri
Dr. Schnell's primary practice is Digestive Health Specialists, at 1300 NW Briarcliff Pkwy, Riverside, MO 64150 in Platte County. The practice phone is (816) 478-4887.
- Digestive Health Specialists1300 NW Briarcliff Pkwy, Riverside, MO 64150 · Platte CountyPhone(816) 478-4887
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Gregory A. Schnell is affiliated with 4 sites of care and 1 medical group
Dr. Schnell's primary practice is Digestive Health Specialists in Riverside, Missouri. Dr. Schnell is also affiliated with NKC Health Hospital. The medical group on file is Digestive Health Specialists. Dmand AI also links Dr. Schnell to 1 more hospital and 1 group practice or clinic, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Gregory A. Schnell's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Schnell practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Digestive Health Specialists | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gregory A. Schnell is one of 329 gastroenterologists in Missouri
Gastroenterology is Dr. Schnell's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Schnell is licensed in Missouri.
Specialties and state licenses
- Gastroenterology, MissouriPrimary
Gastroenterologists near Dr. Schnell
Counts of gastroenterologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Gregory A. Schnell billed Medicare for 3,844 services in 2024
CMS data shows 3,844 Medicare services from Dr. Schnell across 15 procedure codes in 2024, for 525 Medicare patients. Medicare paid $164,674 for them.
Dr. Schnell's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 3,6802024: 3,03318%
- Surgery
- 2023: 4392024: 4421%
- Office and hospital visits
- 2023: 2352024: 2433%
- Other services
- 2023: 832024: 804%
- Tests and treatments
- 2023: 802024: 4643%
Where Dr. Schnell's Medicare services took place, 2024
- In an office3,32286%
- In a facility52214%
Dr. Schnell compared with the Missouri median for gastroenterologists, 2024
- Dr. Schnell
- Missouri median
- Medicare services
- 3,844vs 4169.2 times
- Medicare patients
- 525vs 29677% above
- Part D claims
- 1,421vs 4343.3 times
Medians across 337 gastroenterologists in Missouri with Dmand AI profiles that report each measure.
Dr. Schnell's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Schnell?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Schnell and other gastroenterologists in Missouri.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gregory A. Schnell treated 525 Medicare patients in 2024, average age 73
CMS counts 525 Medicare patients who saw Dr. Schnell in 2024. The largest group is 65 to 74, with 276 patients. 75% of them have high cholesterol, and 72% have high blood pressure. 5% are also on Medicaid. Their average risk score is 1.19, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Schnell's median patient age at 63, with 55% women.
Dr. Schnell's Medicare patients by age, 2024
Dr. Schnell's Medicare patients by sex, 2024
- Women30658%
- Men21942%
Chronic conditions among Dr. Schnell's Medicare patients, 2024
- High cholesterol75%
- High blood pressure72%
- Arthritis45%
- Diabetes29%
- Ischemic heart disease29%
- Mood disorders29%
- Anxiety26%
- Depression25%
Share of Medicare patients with each condition. A patient can have several.
Dr. Schnell's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women55%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gregory A. Schnell wrote 1,570 Medicare Part D claims in 2024
In 2024, Dr. Schnell wrote 1,570 Medicare Part D claims for 452 patients. 86% of them were for generic drugs. CMS names the drug for 1,421 of them, across 29 drugs with 11 or more claims each, at $958,688 in total drug cost. In 2023, CMS named 1,112 claims across 26 drugs.
Dr. Schnell's Part D claims by kind of drug, 2024
- Generic1,348 claims86%
- Brand-name211 claims13%
- Other11 claims1%
Dr. Schnell's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Schnell's Part D claims, 2024
- Antibiotics1%20 of 1,570 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,1122024: 1,42128%
Drugs named by CMS: 29 in 2024, 26 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Gregory A. Schnell ranks in the 94th percentile for colonoscopy in Medicare
Dr. Schnell accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 205 procedures of colonoscopy by Dr. Schnell, more than 94% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Schnell ranks in Medicare procedure volume
- Colonoscopy
- 94th percentile205 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 87th percentile169 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Gregory A. Schnell has 17 publications on record
Dmand AI links 17 papers to Dr. Schnell, published from 2013 to 2025. 2024 was the busiest year, with 3. The most frequent topics are Canada, Cardiology and Critical Care. Dr. Schnell has published most often in Can J Cardiol. Dr. Schnell's most frequent co-authors are Iki Adachi, MD, Hiroyuki Aihara, MD and Michael Goldfarb, MD.
Dr. Schnell's papers by year, 2013 to 2025
Topics Dr. Schnell writes about most
- Canada
- Cardiology
- Critical Care
- Anticoagulants
- Coronary Care Units
- Intensive Care Units
Dr. Schnell's most frequent co-authors
Recent publications by Dr. Schnell
Circ Cardiovasc Qual Outcomes
See who Dr. Schnell researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Schnell works with, so you can find a warm path to the right gastroenterologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Gregory A. Schnell has worked on 1 clinical trial
Dmand AI links Dr. Schnell to 1 clinical trial. Conditions studied include Myocardial Infarction and Infarction.
Conditions in Dr. Schnell's trials
- Myocardial Infarction
- Infarction
Investigators on the most trials with Dr. Schnell
- Jinnette Dawn Abbott, MD1 shared trial
- Farhad Abtahian1 shared trial
- Richard G. Bach, MD1 shared trial
Recent clinical trials with Dr. Schnell
Myocardial Ischemia and Transfusion (opens in a new tab)
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Gregory A. Schnell received $2,575 in industry payments from 2016 to 2025
CMS Open Payments shows 136 general payments to Dr. Schnell from 28 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 98% of the total. Abbvie Inc. paid the most, $658.
General payments to Dr. Schnell by program year, 2016 to 2025
General payments to Dr. Schnell by kind, 2016 to 2025
- Food and beverage$2,51498%
- Education$622%
Companies that paid Dr. Schnell the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Gregory A. Schnell graduated from University of Kansas School of Med (KC/Wich/Sal)
Dr. Schnell graduated from University of Kansas School of Med (KC/Wich/Sal) in 1982.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Gregory A. Schnell's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Gregory A. Schnell
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Gregory A. Schnell's NPI number?
Dr. Gregory A. Schnell's NPI number is 1609835818. It was assigned on March 17, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Gregory A. Schnell?
Dr. Gregory A. Schnell is a gastroenterologist in Riverside, Missouri. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Gregory A. Schnell practice?
Dr. Schnell practices at 1300 NW Briarcliff Pkwy, Riverside, MO 64150. Dr. Schnell's primary practice is Digestive Health Specialists in Riverside, Missouri. Dmand AI also links Dr. Schnell to 1 hospital and 1 group practice or clinic.
What is Dr. Gregory A. Schnell's office phone number?
The practice phone on file for Dr. Schnell is (816) 478-4887.
What is Dr. Gregory A. Schnell's medical license number?
Dr. Schnell holds Missouri license R2E81.
Which hospitals is Dr. Gregory A. Schnell affiliated with?
Dr. Schnell is affiliated with NKC Health Hospital. Dmand AI links Dr. Schnell to 1 more hospital.
What medical group is Dr. Gregory A. Schnell part of?
Dr. Schnell is linked to Digestive Health Specialists.
Does Dr. Gregory A. Schnell accept Medicare?
Yes. CMS data shows Dr. Schnell billed Medicare for 3,844 services in 2024, and Dr. Schnell accepts Medicare assignment.
How many Medicare patients does Dr. Gregory A. Schnell see?
CMS counts 525 Medicare patients who saw Dr. Schnell in 2024, with an average age of 73.
What services does Dr. Gregory A. Schnell bill to Medicare?
In 2024, Dr. Schnell's most billed Medicare services were injected or infused drug (J1745), office visit, established patient (99214) and surgery: digestive system (45380).
Show 6 more questionsShow fewer questions
Where did Dr. Gregory A. Schnell go to medical school?
Dr. Schnell graduated from University of Kansas School of Med (KC/Wich/Sal) in 1982.
What drugs does Dr. Gregory A. Schnell prescribe most?
In 2024 Medicare Part D data, Dr. Schnell's most prescribed drugs by claims were Omeprazole, Pantoprazole Sodium and Famotidine.
Has Dr. Gregory A. Schnell received payments from drug or device companies?
CMS Open Payments shows $2,575 in general payments to Dr. Schnell from 28 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Gregory A. Schnell been practicing?
Dr. Schnell graduated from medical school in 1982, 44 years ago.
Does Dr. Gregory A. Schnell do research?
Dmand AI links 17 publications to Dr. Schnell, published from 2013 to 2025. Dr. Schnell has worked on 1 clinical trial.
Who does Dr. Gregory A. Schnell publish with?
Dr. Schnell's most frequent co-authors are Iki Adachi, MD (5 shared papers), Hiroyuki Aihara, MD (5 shared papers) and Michael Goldfarb, MD (5 shared papers).
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