Independent US Healthcare Provider Directory & Public Medical Database Patient Guides
Medical Specialty Listing

Internal Medicine - Hematology & Oncology Specialists in Tulsa, OK

Browse 36 Internal Medicine - Hematology & Oncology providers listed in NPPES with a practice address in Tulsa, Oklahoma.

36 Healthcare Providers

How Tulsa compares with the U.S.

Tulsa has 8.7 clinicians in Internal Medicine - Hematology & Oncology per 100,000 residents, 2.1 times the U.S. rate of 4.2.

That is 36 active clinicians in Internal Medicine - Hematology & Oncology with a practice address in Tulsa, for a population of 413,794.

The Oklahoma rate is 3.3 per 100,000 residents.

What these numbers mean

Clinicians per 100,000 residents compares places of different sizes. We count active clinicians who list a practice address in the area in the federal NPI registry (NPPES) and divide by the number of people who live there, according to the U.S. Census Bureau. The U.S. rate is the same calculation for the whole country.

A higher number does not mean it is easier to get an appointment, that wait times are shorter, or that care is better. It also does not show how many clinicians are accepting new patients or which insurance plans they take. A lower number does not by itself mean there is a shortage.

City counts use the city name in each clinician's practice address. That postal city can cover a larger or smaller area than the city limits the Census Bureau uses for population, and many clinicians list only one address even if they work in several places. Cities with hospitals or large medical centers often list more specialists than the number of residents alone would suggest, because patients also come from nearby areas.

100% of clinicians in Internal Medicine - Hematology & Oncology in Tulsa listed in the CMS Medicare file (29 of 29) accept Medicare assignment. That is similar to the Oklahoma share of 100%.

What is Medicare assignment?

A clinician who accepts Medicare assignment agrees to take the Medicare-approved amount as full payment for services that Original Medicare covers. You usually still pay your deductible and coinsurance. This comes from the CMS Doctors and Clinicians file and applies to Original Medicare only. Medicare Advantage plans have their own provider networks. It does not show whether a clinician is taking new patients.

Some clinicians are listed as "may accept assignment," which means they can decide case by case. Clinicians without an assignment flag, or who are not in the CMS file, are not counted as accepting assignment. That does not mean they refuse Medicare. Ask the office before your visit.

52% of clinicians in Internal Medicine - Hematology & Oncology in Tulsa listed in the CMS Medicare file (15 of 29) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is higher than the Oklahoma share of 42%.

About the telehealth indicator

The telehealth indicator comes from CMS. It marks clinicians whose recent paid Medicare claims include services delivered by telehealth. It means a clinician has provided some services by telehealth, not that every visit can be done online. A clinician without the indicator may still offer telehealth, for example to patients who are not on Medicare. Ask the office which visits can be done by video or phone.

These figures summarize public federal data. They do not measure quality of care, appointment availability, or whether a clinician accepts your insurance or new patients. Registry addresses can be out of date. Please confirm details directly with the office and your plan. This information is not medical advice.

Prepared by T-MedInfo from NPPES, CMS and U.S. Census Bureau data. Questions or corrections: support@t-medinfo.com ยท Methodology

Sources: Clinician counts and practice addresses: NPPES NPI Registry, Centers for Medicare & Medicaid Services (CMS), data as of November 2026. Medicare assignment and telehealth indicators: CMS Doctors and Clinicians National Downloadable File. Population: U.S. Census Bureau, American Community Survey 2020-2024 5-Year Estimates, Table B01003 (Total Population).

Internal Medicine - Hematology & Oncology Medicare (PECOS) Enrollment & Ordering Eligibility

Medicare enrollment and order/referring eligibility listed by CMS for Internal Medicine - Hematology & Oncology practitioners in Tulsa, OK

Source: CMS PECOS
PECOS Enrolled Specialists 32 In Tulsa, OK
Part B Lab & Imaging Eligible 32 Diagnostic Referrals
DME Ordering Eligible 33 Durable Medical Equipment
Home Health Agency Referrals 32 HHA Ordering Eligible
Showing 1โ€“20 of 36 providers
With recent CMS data first, then Aโ€“Z

Dr. Matthew D Armstrong , MD

Internal Medicine - Hematology & Oncology

Active NPI Status Accepts Medicare Assignment
11212 E 48th St, Tulsa, OK 74146
Phone: 9185563000
NPI Identifier 1457363236
View Full Profile

Dr. Vicki C. Baker , MD

Internal Medicine - Hematology & Oncology

Active NPI Status
11212 E 48th St, Tulsa, OK 741465806
Phone: 9185563000
NPI Identifier 1669414876
View Full Profile

Basil Bakir

Internal Medicine - Hematology & Oncology

Active NPI Status Accepts Medicare Assignment
12697 E 51st St, Tulsa, OK 741466236
Phone: 9185053200
NPI Identifier 1932765088
View Full Profile

Dr. Travis John Brachtenbach , DO

Internal Medicine - Hematology & Oncology

Active NPI Status Accepts Medicare Assignment
12697 E 51st St, Tulsa, OK 741466236
Phone: 9185053200
NPI Identifier 1043839012
View Full Profile

Dr. Laura K Brett , MD

Internal Medicine - Hematology & Oncology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1145 S Utica Ave Ste 110, Tulsa, OK 741044013
Phone: 9185793826
NPI Identifier 1235398066
View Full Profile

Dr. Steven Charles Buck , DO

Internal Medicine - Hematology & Oncology

Active NPI Status
12697 E 51st St, Tulsa, OK 741466236
Phone: 9185053200
NPI Identifier 1154373835
View Full Profile

Dr. Scott Cole , MD

Internal Medicine - Hematology & Oncology

Active NPI Status Accepts Medicare Assignment
12697 E 51st St, Tulsa, OK 741466236
Phone: 9185053200
NPI Identifier 1346351004
View Full Profile

Dr. Melinda Sue Dunlap , MD

Internal Medicine - Hematology & Oncology

Active NPI Status Accepts Medicare Assignment
12697 E 51st St, Tulsa, OK 741466236
Phone: 9185053200
NPI Identifier 1609096668
View Full Profile

Dr. John L. Eckenrode , MD

Internal Medicine - Hematology & Oncology

Active NPI Status
11212 E 48th St, Tulsa, OK 74146
Phone: 9185563000
NPI Identifier 1093782245
View Full Profile

Paul El Tomb

Internal Medicine - Hematology & Oncology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
11212 E 48th St, Tulsa, OK 741465824
Phone: 9185563000
NPI Identifier 1871089243
View Full Profile

Dr. Keerthi Gullapalli , MD

Internal Medicine - Hematology & Oncology

Active NPI Status Accepts Medicare Assignment
1245 S Utica Ave, Tulsa, OK 741044214
Phone: 9185793850
NPI Identifier 1689290801
View Full Profile

Dr. Stephanie Sarita Harry , DO

Internal Medicine - Hematology & Oncology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
11212 E 48th St, Tulsa, OK 741465824
Phone: 9185563000
NPI Identifier 1922494202
View Full Profile

Dr. Muhammad Allahyar Janjua , MD

Internal Medicine - Hematology & Oncology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
11212 E 48th St, Tulsa, OK 741465806
Phone: 9185563000
NPI Identifier 1124159678
View Full Profile

Dr. Hassan Kaleem , MD

Internal Medicine - Hematology & Oncology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
11212 E 48th St, Tulsa, OK 741465806
Phone: 9185563000
NPI Identifier 1538315676
View Full Profile

Dr. Alan Marvin Keller , MD

Internal Medicine - Hematology & Oncology

Active NPI Status Accepts Medicare Assignment
12697 E 51st St, Tulsa, OK 741466236
Phone: 9185053200
NPI Identifier 1386696011
View Full Profile

Dr. Jihad Khattab , MD

Internal Medicine - Hematology & Oncology

Active NPI Status Accepts Medicare Assignment
11212 E 48th St, Tulsa, OK 741465806
Phone: 9185563000
NPI Identifier 1730126111
View Full Profile

Dr. Supriya Koya , MD

Internal Medicine - Hematology & Oncology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1919 S Wheeling Ave, Ste 204, Tulsa, OK 741045638
Phone: 9184037200
NPI Identifier 1770790289
View Full Profile

Dr. Jessica Ann Kreitzberg , DO

Internal Medicine - Hematology & Oncology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
11212 E 48th St, Tulsa, OK 741465824
Phone: 9185563000
NPI Identifier 1568721033
View Full Profile

Dr. Edwin Lynn Mccreary , MD

Internal Medicine - Hematology & Oncology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1809 E 13th St, Suite 402, Tulsa, OK 741044419
Phone: 9185793850
NPI Identifier 1609820034
View Full Profile

Dr. Ali Houssayn Moussa , MD

Internal Medicine - Hematology & Oncology

Active NPI Status Accepts Medicare Assignment
12697 E 51st St, Tulsa, OK 741466236
Phone: 9185053200
NPI Identifier 1548207814
View Full Profile

Frequently Asked Questions about Internal Medicine - Hematology & Oncology in Tulsa

How do I check a Internal Medicine - Hematology & Oncology practitioner's license?

Each practitioner profile shows the NUCC taxonomy code and any state license number the practitioner reported to NPPES, plus a link to the Oklahoma licensing board lookup. NPPES entries are self-reported; current license status is published only by the state board.

Why is a practitioner missing from this list?

This list shows NPI records that are active in NPPES. A deactivated NPI keeps its profile with the deactivation date and practice history; find it with the site search by name or NPI number.