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Dr. Roger L. Siddoway, MD
NPI1548240310
- Medicare services, 2022
- 441
- Part D claims, 2024
- 22
- Publications
- 1
- Industry payments
- $3,637
- Affiliated sites
- 1
- Practice address
- 368 E Riverside Dr Ste A Suite A, Saint George, UT 84790
- Practice phone
- Call (435) 673-1149
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Utah Gastroenterology - Primary Care - St George
Multi-specialty group site · Saint George, Utah
Find Dr. Siddoway'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. Roger L. Siddoway is a gastroenterologist in Cedar City, Utah
Dr. Siddoway practices at Utah Gastroenterology - Primary Care - St George in Saint George, Utah.
Dr. Siddoway's NPI, 1548240310, was assigned on January 18, 2006. Dr. Siddoway graduated from George Washington University School of Medicine in 1979. Dr. Siddoway holds Arizona license 19338.
NPI and contact details
- NPI
- 1548240310NPI Registry (opens in a new tab)
- NPI enumeration date
- January 18, 2006
- NPI status
- Active
- Practice phone
- (435) 673-1149
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 73
- Medical school graduation
- 1979
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Roger L. Siddoway practices in Saint George and Cedar City
Dr. Siddoway's primary practice is Utah Gastroenterology - Primary Care - St George, at 368 E Riverside Dr Ste A Suite A, Saint George, UT 84790. The practice phone is (435) 673-1149. The NPI Registry lists Dr. Siddoway's practice address as 1303 N Main St, Cedar City, UT 84721.
- Utah Gastroenterology - Primary Care - St GeorgePrimary368 E Riverside Dr Ste A Suite A, Saint George, UT 84790Phone(435) 673-1149
- NPI Registry address1303 N Main St, Cedar City, UT 84721 · Iron CountyPhone(435) 673-1149
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Roger L. Siddoway is affiliated with 1 site of care and 1 medical group
Dr. Siddoway's primary practice is Utah Gastroenterology - Primary Care - St George in Saint George, Utah. The medical group on file is Utah Gastroenterology.
Utah Gastroenterology - Primary Care - St GeorgePrimary
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Roger L. Siddoway's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Siddoway practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Utah Gastroenterology - Primary Care - St George | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Roger L. Siddoway is one of 132 gastroenterologists in Utah
Gastroenterology is Dr. Siddoway's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Siddoway is licensed in Arizona.
Specialties and state licenses
- Gastroenterology, ArizonaPrimary
Gastroenterologists near Dr. Siddoway
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. Roger L. Siddoway billed Medicare for 441 services in 2022
CMS data shows 441 Medicare services from Dr. Siddoway across 13 procedure codes in 2022. Medicare paid $55,493 for them.
Medicare services, 2022441
Paid by Medicare$55,493
Procedure codes13
Dr. Siddoway's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Surgery
- 2021: 6092022: 29052%
- Other services
- 2021: 2072022: 9057%
- Office and hospital visits
- 2021: 1042022: 6141%
- Lab and pathology
- 2021: 3492022: 0100%
Where Dr. Siddoway's Medicare services took place, 2022
- In an office8620%
- In a facility35580%
Dr. Siddoway compared with the Utah median for gastroenterologists, 2022
- Dr. Siddoway
- Utah median
- Medicare services
- 441vs 30346% above
- Part D claims
- 15vs 24994% below
Medians across 134 gastroenterologists in Utah with Dmand AI profiles that report each measure.
Dr. Siddoway's most billed Medicare procedure codes, 2022
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. Siddoway?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Siddoway and other gastroenterologists in Utah.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Roger L. Siddoway's patients have a median age of 66
Across all payers, Dmand AI patient panel data puts Dr. Siddoway's median patient age at 66, with 50% women.
Dr. Siddoway's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women50%
- Men49%
Source: Dmand AI Patient Panel Data
Dr. Roger L. Siddoway wrote 22 Medicare Part D claims in 2024
In 2024, Dr. Siddoway wrote 22 Medicare Part D claims. 82% of them were for generic drugs. CMS names the drug for 15 of them, across 1 drug with 11 or more claims each, at $147 in total drug cost. In 2022, CMS named 152 claims across 6 drugs.
Part D claims, 202422
Drugs named by CMS1
Total drug cost$147
Dr. Siddoway's Part D claims by kind of drug, 2024
- Generic18 claims82%
- Brand-name and other4 claims18%
Dr. Siddoway's most prescribed drugs by claims, 2023
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 1522023: 1590%
Drugs named by CMS: 1 in 2023, 6 in 2022.
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
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Dr. Roger L. Siddoway has 1 publication on record
Dmand AI links 1 paper to Dr. Siddoway in 2021. Dr. Siddoway's most frequent co-author is Manjil Chatterji, MD.
Papers1
Dr. Siddoway's most frequent co-authors
Recent publications by Dr. Siddoway
See who Dr. Siddoway researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Siddoway 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. Roger L. Siddoway received $3,637 in industry payments from 2016 to 2024
CMS Open Payments shows 216 general payments to Dr. Siddoway from 25 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 95% of the total. Abbvie Inc. paid the most, $885.
General payments to Dr. Siddoway by program year, 2016 to 2024
General payments to Dr. Siddoway by kind, 2016 to 2024
$3.6Kin total
- Food and beverage$3,43895%
- Education$1995%
Companies that paid Dr. Siddoway the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Roger L. Siddoway graduated from George Washington University School of Medicine
Dr. Siddoway graduated from George Washington University School of Medicine in 1979.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Roger L. Siddoway'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 Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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 Data |
| 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Roger L. Siddoway
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. Roger L. Siddoway's NPI number?
Dr. Roger L. Siddoway's NPI number is 1548240310. It was assigned on January 18, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Roger L. Siddoway?
Dr. Roger L. Siddoway is a gastroenterologist in Cedar City, Utah. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Roger L. Siddoway practice?
Dr. Siddoway practices at 368 E Riverside Dr Ste A Suite A, Saint George, UT 84790. Dr. Siddoway also practices at 1303 N Main St, Cedar City, UT 84721. Dr. Siddoway's primary practice is Utah Gastroenterology - Primary Care - St George in Saint George, Utah.
What is Dr. Roger L. Siddoway's office phone number?
The practice phone on file for Dr. Siddoway is (435) 673-1149.
What is Dr. Roger L. Siddoway's medical license number?
Dr. Siddoway holds Arizona license 19338.
What medical group is Dr. Roger L. Siddoway part of?
Dr. Siddoway is linked to Utah Gastroenterology.
Does Dr. Roger L. Siddoway accept Medicare?
Yes. CMS data shows Dr. Siddoway billed Medicare for 441 services in 2022.
What services does Dr. Roger L. Siddoway bill to Medicare?
In 2022, Dr. Siddoway's most billed Medicare services were surgery: digestive system (45385), surgery: digestive system (43239) and medicare service (G0105).
Where did Dr. Roger L. Siddoway go to medical school?
Dr. Siddoway graduated from George Washington University School of Medicine in 1979.
What drugs does Dr. Roger L. Siddoway prescribe most?
In 2023 Medicare Part D data, Dr. Siddoway's most prescribed drugs by claims were Pantoprazole Sodium.
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Has Dr. Roger L. Siddoway received payments from drug or device companies?
CMS Open Payments shows $3,637 in general payments to Dr. Siddoway from 25 companies from 2016 to 2024. The largest total came from Abbvie Inc.
How long has Dr. Roger L. Siddoway been practicing?
Dr. Siddoway graduated from medical school in 1979, 47 years ago.
Does Dr. Roger L. Siddoway do research?
Dmand AI links 1 publication to Dr. Siddoway.
Who does Dr. Roger L. Siddoway publish with?
Dr. Siddoway's most frequent co-authors are Manjil Chatterji, MD (1 shared paper).
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