Hematologists and Oncologists in Oklahoma
Data updated monthly · Last refresh October 2026
130 Hematology & Oncology providers practice in Oklahoma, including 40 (31%) offering telehealth. The largest concentration is in Oklahoma City. Profiles include federal Open Payments records of money received from drug and device companies in 2025. Listings are drawn from federal public records and are not endorsements.
130providers
40telehealth
Oklahoma Citytop city
Hematology & Oncology by city in Oklahoma
Choose a city to see providers there.
Where Hematologists and Oncologists in Oklahoma practice
From CMS Medicare enrollment records covering 91 of the 130 providers listed here (70%). Providers who do not bill Medicare are not included in these figures.
2%solo or small practice (under 10 clinicians)
19%mid-size group (10 to 99)
79%large group or health system (100+)
Largest practice groups
| Group (as registered with Medicare) | Hematologists and Oncologists | All clinicians in group | Main city |
| Ou Health Partners Inc. | 27 | 1,167 | Oklahoma City |
| Mercy Clinic Oklahoma Communities | 14 | 645 | Oklahoma City |
| Integris Ambulatory Care Corp.oration | 12 | 687 | Oklahoma City |
| Warren Clinic Inc. | 11 | 787 | Tulsa |
| Saint Francis Hospital, Inc.. | 11 | 58 | Tulsa |
Hospitals where they hold privileges
| Hospital | City | Ownership | CMS star rating | Hematologists and Oncologists affiliated |
| O U Medical Center | Oklahoma City | Nonprofit | 2 of 5 | 52 |
| Saint Francis Hospital, Inc. | Tulsa | Nonprofit | 5 of 5 | 21 |
| Mercy Hospital Oklahoma City, Inc. | Oklahoma City | Nonprofit | 4 of 5 | 20 |
| Integris Baptist Medical Center, Inc. | Oklahoma City | Nonprofit | 3 of 5 | 16 |
| Cherokee Nation W W Hastings Indian Hospital | Tahlequah | Nonprofit | 3 of 5 | 13 |
Sources: CMS Doctors and Clinicians (August 2026) and Facility Affiliation files (August 2026); hospital ownership type and overall star rating from CMS Hospital General Information (July 2026). A clinician in several groups is counted once, in the largest group they bill through. Ownership type is what the hospital reports to CMS; it does not show private equity or other investor ownership. How we build this directory.
Hematology & Oncology providers in Oklahoma
Listed by city, largest first. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.
Dr. Masood GhouseAda, OK · $1,114 in drug and device payments (2025) · Telehealth ·
(580) 421-1141 Dr. Christopher Manus, M.D.Bartlesville, OK · $675 in drug and device payments (2025) ·
(918) 331-1760 Dr. Gus Gonzalez, MDEdmond, OK · $2,917 in drug and device payments (2025) ·
(417) 544-4147 Dr. Roseleen Charania, MDEdmond, OK · No drug or device payments recorded (2025) ·
(405) 359-7362 Dr. Sanjaykumar Hapani, M.DEdmond, OK · $8,885 in drug and device payments (2025) · Telehealth ·
(405) 752-0872 Dr. Francisco Dexeus, M.D.Enid, OK · No drug or device payments recorded (2025) ·
(580) 234-1061 Dr. Anmol Baranwal, M.D.Lawton, OK · $1,039 in drug and device payments (2025) · Telehealth ·
(580) 536-2121 Dr. Manal Robin-hanna, M.D.Lawton, OK · $2,282 in drug and device payments (2025) · Telehealth ·
(580) 536-2121 Dr. Nadim Nimeh, M.D.Lawton, OK · No drug or device payments recorded (2025) ·
(580) 536-2121 Dr. Sirisha Perumandla, MDLawton, OK · $42 in drug and device payments (2025) · Telehealth ·
(859) 553-0101 Dr. Vinicius Machado Jorge, M.D.Lawton, OK · $1,688 in drug and device payments (2025) ·
(580) 536-2121 Dr. Stephen Hamilton, M.D.Midwest City, OK · No drug or device payments recorded (2025) ·
(405) 737-8455 Dr. Todd Kliewer, M.D.Midwest City, OK · $568 in drug and device payments (2025) ·
(405) 737-8455 Dr. Hani Jumean, MD FRCP FACPMuskogee, OK · No drug or device payments recorded (2025) ·
(918) 686-8500 Dr. Ravikumar Vasireddy, MDMuskogee, OK · $3,896 in drug and device payments (2025) ·
(918) 683-2000 Dr. Syed Hassany, MDMuskogee, OK · $3,980 in drug and device payments (2025) ·
(918) 684-2187 Dr. Kathy Dagg, M.D.Norman, OK · No drug or device payments recorded (2025) ·
(405) 321-4644 Dr. Maril Weber, MDNorman, OK · No drug or device payments recorded (2025) ·
(405) 307-1000 Dr. Shari Jones, MDNorman, OK · $2,698 in drug and device payments (2025) ·
(405) 321-4644 Dr. Sherri Durica, M.D.Norman, OK · No drug or device payments recorded (2025) ·
(405) 321-4644 Dr. Abby Bova, MDOklahoma City, OK · $1,145 in drug and device payments (2025) · Telehealth ·
(405) 751-4343 Dr. Abdul Rafeh Naqash, MDOklahoma City, OK · $3,667 in drug and device payments (2025) ·
(405) 271-8001 Dr. Adam Asch, M.D.Oklahoma City, OK · $182 in drug and device payments (2025) ·
(405) 271-8299 Dr. Adanma Anji Ayanambakkam AttanathiOklahoma City, OK · $6,495 in drug and device payments (2025) ·
(405) 271-5963 Dr. Agnel Raparthi, M.D.,Oklahoma City, OK · $978 in drug and device payments (2025) ·
(405) 773-6400 Dr. Andre De Souza, M.DOklahoma City, OK · No drug or device payments recorded (2025) · Telehealth ·
(405) 271-4022 Dr. Arafat Tfayli, MDOklahoma City, OK · No drug or device payments recorded (2025) ·
(405) 271-8299 Dr. Bashar Alasad, M.D.Oklahoma City, OK · $445 in drug and device payments (2025) ·
(405) 631-0919 Dr. Bilal Ahmad, M.DOklahoma City, OK · $1,599 in drug and device payments (2025) ·
(405) 631-0919 Dr. Brian Geister, M.D.Oklahoma City, OK · $325 in drug and device payments (2025) ·
(405) 773-6400 Dr. Carla Kurkjian, M.D.Oklahoma City, OK · No drug or device payments recorded (2025) · Telehealth ·
(405) 751-4343 Dr. Charles Hollen, M.D.Oklahoma City, OK · No drug or device payments recorded (2025) ·
(405) 942-9200 Dr. Christopher Thompson, MDOklahoma City, OK · $139 in drug and device payments (2025) · Telehealth ·
(405) 751-4343 Dr. Clay Reed, MDOklahoma City, OK · $6,671 in drug and device payments (2025) · Telehealth ·
(405) 751-4343 Dr. Craig Reitz, M.D.Oklahoma City, OK · $78 in drug and device payments (2025) ·
(405) 751-4343 Dr. Danielle Kramer-smotherman, D.O.Oklahoma City, OK · $118 in drug and device payments (2025) · Telehealth ·
(405) 751-4343 Dr. David Lam, MDOklahoma City, OK · $503 in drug and device payments (2025) ·
(405) 228-7100 Dr. Erin Ezzell, D.O.Oklahoma City, OK · $589 in drug and device payments (2025) ·
(405) 271-4022 Dr. George Selby, MDOklahoma City, OK · No drug or device payments recorded (2025) ·
(405) 271-8299 Dr. Graca Dores, MD, MPHOklahoma City, OK · No drug or device payments recorded (2025) ·
(405) 270-0501 Dr. Gregory Parker, M.D.Oklahoma City, OK · No drug or device payments recorded (2025) ·
(405) 942-9200 Dr. Hassan Hatoum, MDOklahoma City, OK · $9,510 in drug and device payments (2025) ·
(405) 272-4022 Dr. Ignatius Nyatsanza, M.D.Oklahoma City, OK · $80 in drug and device payments (2025) · Telehealth ·
(405) 713-7403 Dr. Irim Yasin, M.D.Oklahoma City, OK · $892 in drug and device payments (2025) ·
(405) 773-6400 Dr. James Feisal, MDOklahoma City, OK · $851 in drug and device payments (2025) · Telehealth ·
(405) 228-7100 Dr. James George, MDOklahoma City, OK · No drug or device payments recorded (2025) ·
(405) 271-8299 Conditions Hematology & Oncology providers in Oklahoma commonly treat
Patients often search by condition rather than specialty. These are conditions typically managed by Hematology & Oncology providers. Individual practices vary, so confirm with the provider before booking.
- Breast cancer
- Lung cancer
- Lymphoma
- Leukemia
- Anemia
- Blood disorders
Common questions
How many Hematology & Oncology providers are in Oklahoma?There are 130 Hematology & Oncology providers with active NPI records practicing in Oklahoma, according to federal NPPES data refreshed monthly.
Do Hematology & Oncology providers in Oklahoma offer telehealth?Yes. 40 of the 130 Hematology & Oncology providers in Oklahoma (about 31%) report offering telehealth services in CMS data.
Which cities in Oklahoma have the most Hematology & Oncology providers?Oklahoma City (68), Tulsa (35), Lawton (6) have the highest concentration of Hematology & Oncology providers in Oklahoma.
How many Hematology & Oncology providers in Oklahoma received drug or device company payments?95 of 130 Hematology & Oncology providers in Oklahoma (73%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.
What conditions do Hematology & Oncology providers in Oklahoma treat?Hematology & Oncology providers commonly treat breast cancer, lung cancer, lymphoma, leukemia, anemia and related conditions. Individual practices vary, so confirm with the provider before booking.
Where does this data come from?Provider counts and profiles come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.
Do most Hematologists and Oncologists in Oklahoma work in independent practices or large health systems?Among 91 Hematologists and Oncologists in Oklahoma enrolled in Medicare, 2% bill through a solo or small practice with fewer than 10 clinicians, 19% through a mid-size group of 10 to 99, and 79% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.
Which hospitals do Hematologists and Oncologists in Oklahoma work at?According to CMS facility affiliation records, the Oklahoma hospitals where the most Hematologists and Oncologists hold privileges are O U Medical Center in Oklahoma City; Saint Francis Hospital, Inc. in Tulsa; Mercy Hospital Oklahoma City, Inc. in Oklahoma City.
Related reading on HealthcareDiscovery.AI
Hematology & Oncology in all 50 states Search all 130 in the directory Ask Zach for help choosing
Related
