Dr. Isaac Ray Dennis, DO
- Medicare services, 2024
- 851
- Medicare patients, 2024
- 317
- Part D claims, 2024
- 481
- Hospital affiliations
- 2
- Industry payments
- $867
- Practice address
- 10501 East 91st Street South, Tulsa, OK 74133
- Practice phone
- Call (918) 307-6010
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Dennis' 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. Isaac Ray Dennis is a hospitalist in Tulsa, Oklahoma
Dr. Dennis practices at Saint Francis Hospital South in Tulsa, Oklahoma, part of Saint Francis Health System.
Dr. Dennis' NPI, 1477999514, was assigned on May 16, 2013. Dr. Dennis graduated from Oklahoma State University College of Osteopathic Medicine in 2013. Dr. Dennis holds Oklahoma license 5548.
- NPI
- 1477999514NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2264723055
- NPI enumeration date
- May 16, 2013
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (918) 307-6010
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 39
- Medical school graduation
- 2013
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Isaac Ray Dennis practices at Saint Francis Hospital South in Tulsa, Oklahoma
Dr. Dennis' primary practice is Saint Francis Hospital South, at 10501 East 91st Street South, Tulsa, OK 74133 in Tulsa County. The practice phone is (918) 307-6010.
- Saint Francis Hospital South10501 East 91st Street South, Tulsa, OK 74133 · Tulsa CountyPhone(918) 307-6010
Source: Dmand AI Affiliation Data
Dr. Isaac Ray Dennis is affiliated with 3 sites of care and 1 medical group
Dr. Dennis' primary practice is Saint Francis Hospital South in Tulsa, Oklahoma, part of Saint Francis Health System. Dr. Dennis is also affiliated with Saint Francis Hospital. The medical group on file is Warren Clinic. Dmand AI also links Dr. Dennis to 1 more hospice, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Isaac Ray Dennis' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Dennis practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Saint Francis Hospital South | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Saint Francis Health System and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Isaac Ray Dennis is one of 226 hospitalists in Oklahoma
Hospitalist is Dr. Dennis' primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dr. Dennis is licensed in Oklahoma.
Specialties and state licenses
- Hospitalist, OklahomaPrimary
Hospitalists near Dr. Dennis
Counts of hospitalists 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. Isaac Ray Dennis billed Medicare for 851 services in 2024
CMS data shows 851 Medicare services from Dr. Dennis across 4 procedure codes in 2024, for 317 Medicare patients. Medicare paid $69,884 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Dennis' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 9652024: 85112%
Dr. Dennis compared with the Oklahoma median for hospitalists, 2024
- Dr. Dennis
- Oklahoma median
- Medicare services
- 851vs 64931% above
- Medicare patients
- 317vs 27416% above
- Part D claims
- 320vs 784.1 times
Medians across 221 hospitalists in Oklahoma with Dmand AI profiles that report each measure.
Dr. Dennis' 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. Dennis?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Dennis and other hospitalists in Oklahoma.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Isaac Ray Dennis treated 317 Medicare patients in 2024, average age 76
CMS counts 317 Medicare patients who saw Dr. Dennis in 2024. The largest group is 75 to 84, with 116 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 19% are also on Medicaid. Their average risk score is 2.42, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Dennis' median patient age at 72, with 57% women.
Dr. Dennis' Medicare patients by age, 2024
Dr. Dennis' Medicare patients by sex, 2024
- Women19762%
- Men12038%
Chronic conditions among Dr. Dennis' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis60%
- Chronic kidney disease53%
- Heart failure51%
- Mood disorders47%
- Depression46%
- Anxiety44%
Share of Medicare patients with each condition. A patient can have several.
Dr. Dennis' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women57%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Isaac Ray Dennis wrote 481 Medicare Part D claims in 2024
In 2024, Dr. Dennis wrote 481 Medicare Part D claims for 242 patients. 88% of them were for generic drugs. CMS names the drug for 320 of them, across 18 drugs with 11 or more claims each, at $13,463 in total drug cost. In 2023, CMS named 271 claims across 14 drugs.
Dr. Dennis' Part D claims by kind of drug, 2024
- Generic422 claims88%
- Brand-name and other59 claims12%
Dr. Dennis' 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. Dennis' Part D claims, 2024
- Opioids5%23 of 481 claims
- Antibiotics28%136 of 481 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: 2712024: 32018%
Drugs named by CMS: 18 in 2024, 14 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
How Dr. Isaac Ray Dennis takes part in Medicare
Dr. Dennis accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Isaac Ray Dennis received $867 in industry payments from 2016 to 2025
CMS Open Payments shows 25 general payments to Dr. Dennis from 12 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $222.
General payments to Dr. Dennis by program year, 2016 to 2025
Companies that paid Dr. Dennis 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. Isaac Ray Dennis graduated from Oklahoma State University College of Osteopathic Medicine
Dr. Dennis graduated from Oklahoma State University College of Osteopathic Medicine in 2013.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Isaac Ray Dennis'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy 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) |
| 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. Isaac Ray Dennis
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. Isaac Ray Dennis' NPI number?
Dr. Isaac Ray Dennis' NPI number is 1477999514. It was assigned on May 16, 2013, and it is active in the NPI Registry.
What kind of doctor is Dr. Isaac Ray Dennis?
Dr. Isaac Ray Dennis is a hospitalist in Tulsa, Oklahoma. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Dr. Isaac Ray Dennis practice?
Dr. Dennis practices at 10501 East 91st Street South, Tulsa, OK 74133. Dr. Dennis' primary practice is Saint Francis Hospital South in Tulsa, Oklahoma, part of Saint Francis Health System. Dmand AI also links Dr. Dennis to 1 hospice.
What is Dr. Isaac Ray Dennis' office phone number?
The practice phone on file for Dr. Dennis is (918) 307-6010.
What is Dr. Isaac Ray Dennis' medical license number?
Dr. Dennis holds Oklahoma license 5548.
Which hospitals is Dr. Isaac Ray Dennis affiliated with?
Dr. Dennis practices at Saint Francis Hospital South in Tulsa, Oklahoma. Dr. Dennis is also affiliated with Saint Francis Hospital.
What medical group is Dr. Isaac Ray Dennis part of?
Dr. Dennis is linked to Warren Clinic.
Does Dr. Isaac Ray Dennis accept Medicare?
Yes. CMS data shows Dr. Dennis billed Medicare for 851 services in 2024, and Dr. Dennis accepts Medicare assignment.
How many Medicare patients does Dr. Isaac Ray Dennis see?
CMS counts 317 Medicare patients who saw Dr. Dennis in 2024, with an average age of 76.
What services does Dr. Isaac Ray Dennis bill to Medicare?
In 2024, Dr. Dennis' most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99239) and hospital inpatient care (99232).
Show 4 more questionsShow fewer questions
Where did Dr. Isaac Ray Dennis go to medical school?
Dr. Dennis graduated from Oklahoma State University College of Osteopathic Medicine in 2013.
What drugs does Dr. Isaac Ray Dennis prescribe most?
In 2024 Medicare Part D data, Dr. Dennis' most prescribed drugs by claims were Prednisone, Metoprolol Succinate and Amlodipine Besylate.
Has Dr. Isaac Ray Dennis received payments from drug or device companies?
CMS Open Payments shows $867 in general payments to Dr. Dennis from 12 companies from 2016 to 2025. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Isaac Ray Dennis been practicing?
Dr. Dennis graduated from medical school in 2013, 13 years ago.
Selling to hospitalist practices?
See hospitalists in Oklahoma by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card