Dr. John Robert Mathias, MD
- Medicare services, 2021
- 62
- Part D claims, 2024
- 36
- Publications
- 44
- Industry payments
- $1,734
- Insurance carriers
- 1
- Practice address
- 1923 S Utica Ave, Tulsa, OK 74104
- Practice phone
- Call (918) 744-2345
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
St John Medical Center
Tulsa, Oklahoma
Find Dr. Mathias' 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. John Robert Mathias is a gastroenterologist in Tulsa, Oklahoma
Dr. Mathias practices at St John Medical Center in Tulsa, Oklahoma.
Dr. Mathias' NPI, 1639239643, was assigned on December 11, 2006. Dr. Mathias graduated from Lewis Katz School of Medicine in 1968. Dr. Mathias holds Texas license H5378.
- NPI
- 1639239643NPI Registry (opens in a new tab)
- NPI enumeration date
- December 11, 2006
- NPI status
- Active
- Practice phone
- (918) 744-2345
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1968
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. John Robert Mathias practices at St John Medical Center in Tulsa, Oklahoma
Dr. Mathias' primary practice is St John Medical Center, at 1923 S Utica Ave, Tulsa, OK 74104 in Tulsa County. The practice phone is (918) 744-2345.
- St John Medical Center1923 S Utica Ave, Tulsa, OK 74104 · Tulsa CountyPhone(918) 744-2345
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. John Robert Mathias is affiliated with 1 site of care
Dr. Mathias' primary practice is St John Medical Center in Tulsa, Oklahoma.
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. John Robert Mathias' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mathias practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| St John Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John Robert Mathias is one of 144 gastroenterologists in Oklahoma
Gastroenterology is Dr. Mathias' primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dmand AI has Dr. Mathias' licenses on file in 3 states: Texas, New Mexico and Florida.
Specialties and state licenses
- Gastroenterology, TexasPrimary
- New Mexico license
- Florida license
Gastroenterologists near Dr. Mathias
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. John Robert Mathias billed Medicare for 62 services in 2021
CMS data shows 62 Medicare services from Dr. Mathias across 1 procedure code in 2021, all of them office visits. Medicare paid $5,221 for them. Every service was in an office.
Dr. Mathias' Medicare services by type, 2020 to 2021
- 2020
- 2021
- Office and hospital visits
- 2020: 1732021: 6264%
Dr. Mathias compared with the Oklahoma median for gastroenterologists, 2021
- Dr. Mathias
- Oklahoma median
- Medicare services
- 62vs 71291% below
- Part D claims
- 74vs 52686% below
Medians across 142 gastroenterologists in Oklahoma with Dmand AI profiles that report each measure.
Dr. Mathias' most billed Medicare procedure codes, 2021
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. Mathias?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Mathias and other gastroenterologists in Oklahoma.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John Robert Mathias' patients have a median age of 61
Across all payers, Dmand AI patient panel data puts Dr. Mathias' median patient age at 61, with 73% women.
Dr. Mathias' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 61
Patient panel by sex, all payers
- Women73%
- Men27%
Source: Dmand AI Patient Panel Data
Dr. John Robert Mathias wrote 36 Medicare Part D claims in 2024
In 2024, Dr. Mathias wrote 36 Medicare Part D claims. 83% of them were for generic drugs. They cover 5 drugs, with $7,901 in total drug cost. In 2022, CMS named 236 claims across 14 drugs.
Dr. Mathias' Part D claims by kind of drug, 2024
- Generic30 claims83%
- Brand-name and other6 claims17%
Dr. Mathias' 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: 2362023: 7469%
Drugs named by CMS: 5 in 2023, 14 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. John Robert Mathias has 44 publications on record
Dmand AI links 44 papers to Dr. Mathias in 2024. The most frequent topics are Gastrointestinal Motility, Action Potentials and Rabbits. Dr. Mathias has published most often in Am J Physiol. Dr. Mathias' most frequent co-authors are Charles A. Sninsky, MD, Joel Michael Andres, MD and Thomas Edwin Ducker, MD.
Topics Dr. Mathias writes about most
- Gastrointestinal Motility
- Action Potentials
- Rabbits
- Ileum
- Intestine, Small
- Enterotoxins
- Myoelectric Complex, Migrating
- Gastric Emptying
Dr. Mathias' most frequent co-authors
- Charles A. Sninsky, MD7 shared papers
- Joel Michael Andres, MD3 shared papers
- Thomas Edwin Ducker, MD2 shared papers
Recent publications by Dr. Mathias
Am J Physiol
See who Dr. Mathias researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Mathias 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. John Robert Mathias received $1,734 in industry payments from 2016 to 2021
CMS Open Payments shows 124 general payments to Dr. Mathias from 21 drug and device companies from 2016 to 2021. Food and beverage make up the largest share, 98% of the total. Ironwood Pharmaceuticals, Inc paid the most, $420.
General payments to Dr. Mathias by program year, 2016 to 2021
General payments to Dr. Mathias by kind, 2016 to 2021
- Food and beverage$1,70598%
- Education$171%
- Consulting fees$121%
Companies that paid Dr. Mathias the most, 2016 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John Robert Mathias has 1 award and honors on record
Dmand AI lists 1 award for Dr. Mathias, most recently ASCI Member in 1986.
Awards and honors for Dr. Mathias
- 1986
- ASCI Member
Source: Dmand AI Professional Profile Data
Dr. John Robert Mathias graduated from Lewis Katz School of Medicine
Dr. Mathias graduated from Lewis Katz School of Medicine in 1968.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. John Robert Mathias accepts plans from 1 insurance carrier
Dr. Mathias is in network with 1 carrier, including Blue Cross Blue Shield of Michigan. HMO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Michigan
Plan types Dr. Mathias accepts, by number of carriers
- HMO1
- POS1
- PPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. John Robert Mathias'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 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 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) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. John Robert Mathias
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. John Robert Mathias' NPI number?
Dr. John Robert Mathias' NPI number is 1639239643. It was assigned on December 11, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John Robert Mathias?
Dr. John Robert Mathias is a gastroenterologist in Tulsa, Oklahoma. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. John Robert Mathias practice?
Dr. Mathias practices at 1923 S Utica Ave, Tulsa, OK 74104. Dr. Mathias' primary practice is St John Medical Center in Tulsa, Oklahoma.
What is Dr. John Robert Mathias' office phone number?
The practice phone on file for Dr. Mathias is (918) 744-2345.
What is Dr. John Robert Mathias' medical license number?
Dr. Mathias holds Texas license H5378, one of the licenses on file in 3 states.
Which states has Dr. John Robert Mathias been licensed in?
Dmand AI has state licenses on file for Dr. Mathias in Texas (1989 to 2026), New Mexico (2000 to 2010) and Florida (1976 to 1987).
Does Dr. John Robert Mathias accept Medicare?
Yes. CMS data shows Dr. Mathias billed Medicare for 62 services in 2021.
What services does Dr. John Robert Mathias bill to Medicare?
In 2021, Dr. Mathias' most billed Medicare services were office visit, established patient (99214).
Where did Dr. John Robert Mathias go to medical school?
Dr. Mathias graduated from Lewis Katz School of Medicine in 1968.
What drugs does Dr. John Robert Mathias prescribe most?
In 2023 Medicare Part D data, Dr. Mathias' most prescribed drugs by claims were Promethazine HCl, Clonazepam and Levothyroxine Sodium.
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Has Dr. John Robert Mathias received payments from drug or device companies?
CMS Open Payments shows $1,734 in general payments to Dr. Mathias from 21 companies from 2016 to 2021. The largest total came from Ironwood Pharmaceuticals, Inc.
How long has Dr. John Robert Mathias been practicing?
Dr. Mathias graduated from medical school in 1968, 58 years ago.
Does Dr. John Robert Mathias do research?
Dmand AI links 44 publications to Dr. Mathias.
Who does Dr. John Robert Mathias publish with?
Dr. Mathias' most frequent co-authors are Charles A. Sninsky, MD (7 shared papers), Joel Michael Andres, MD (3 shared papers) and Thomas Edwin Ducker, MD (2 shared papers).
What insurance does Dr. John Robert Mathias accept?
Dr. Mathias is in network with 1 carrier, including Blue Cross Blue Shield of Michigan. HMO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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