Nasser Janbay, M.D.
Hematology & Oncology Physician · Oklahoma City, OK
Nasser Janbay, M.D. is a hematology & oncology physician with a practice address in Oklahoma City, Oklahoma, and NPI 1699768374, issued on Aug 26, 2005. Check the license (Oklahoma 25205, as entered in NPPES) on the Oklahoma Board of Medical Licensure and Supervision; the Medicare figures below come from public CMS files.
- Name
- Nasser Janbay
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License numbers
- 25205 OK
48471 KS
Self-reported in NPPES; status is on the state search - Practice location
- 4401 Mcauley Blvd Ste 2700, Oklahoma City, OK 73120
- Phone
- (405) 751-4343
- Enumerated
- Aug 26, 2005
- Record last updated
- Apr 30, 2026
- Fax
- (405) 751-4346
- Medicaid ID
- 790936711A GA
- Medicare enrollment
- Enrolled (PECOS I20070203000171); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 128 in Oklahoma → Look up another NPI →
Also registered at 4401 Mcauley Blvd Ste 2700
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Colton Boyle, APRNFamily Nurse Practitioner1649011529
- Danielle Kramer-Smotherman, D.O.Hematology & Oncology Physician1669886677
- Clay Reed, MDHematology & Oncology Physician1841721438
Verify Nasser Janbay in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOklahoma Board of Medical Licensure and Supervision
Search for license 25205Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Most of these Medicare Part D claims are vaccines, 78% of the cost of the top drugs
325 Medicare Part D claims for 216 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 72% of claims. 13 claims were for opioids.
Most prescribed
Pharmacies often give vaccines under a standing order that names one clinician, and CMS counts every such claim under that clinician's NPI. These claims are therefore not a measure of this clinician's own prescribing.
- Arexvy137 claims
- Shingrix25 claims
- Mresvia20 claims
- Eliquis18 claims
- Ondansetron Odt11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 96.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Mercy Clinic Oklahoma CommunitiesAda, OK
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nasser Janbay among 128 hematology & oncology physician records in Oklahoma
Nasser Janbay, M.D. is one of 128 hematology & oncology physician records with a practice address in Oklahoma. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 95% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 76% of these records are
- Graduated1985 · median 2004 among the 97 with a school on file
- Record last updated2026 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Oklahoma practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Oklahoma
There are 128 hematology & oncology physician records in Oklahoma.
All 128 in Oklahoma → Every provider in Oklahoma City → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Abby Bova, MDOklahoma City, OK 731201013058452
- Vikki Canfield, M.D.Oklahoma City, OK 731201659322378
- Sanjaykumar Hapani, M.DEdmond, OK 731201952508533
- Mohamed Kanaa, MDOklahoma City, OK 731201215932496
- Michael Keefer, M.D.Oklahoma City, OK 731201386697548
- Danielle Kramer-Smotherman, D.O.Oklahoma City, OK 731201669886677
- Carla Kurkjian, M.D.Oklahoma City, OK 731201760534127
- Clay Reed, MDOklahoma City, OK 731201841721438
Common questions
What is Nasser Janbay, M.D.'s NPI number?
Nasser Janbay, M.D.'s National Provider Identifier (NPI) is 1699768374, issued on Aug 26, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Nasser Janbay, M.D. located?
The NPPES record lists a practice address at 4401 Mcauley Blvd Ste 2700, Oklahoma City, OK, 73120. Phone: (405) 751-4343. Providers update this record themselves, so call before visiting.
How can I verify Nasser Janbay, M.D.'s license?
NPPES lists Oklahoma license number 25205, as entered by the provider. Search the Oklahoma Board of Medical Licensure and Supervision at https://www.okmedicalboard.org/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Nasser Janbay, M.D. prescribe under Medicare Part D?
In 2024, Nasser Janbay, M.D. had 325 Medicare Part D claims for 216 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is Nasser Janbay, M.D.'s MIPS final score?
The 2023 MIPS final score is 96.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.