Grigori Okoev, M.D.
Hematology & Oncology Physician · York, PA
Grigori Okoev, M.D. is a hematology & oncology physician with a practice address in York, Pennsylvania, and NPI 1346635679, issued on Apr 2, 2015. Check the license (Pennsylvania MD479403, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Grigori Okoev
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License numbers
- MD479403 PA
D0091105 MD
Self-reported in NPPES; status is on the state search - Practice location
- 25 Monument RD Ste 294, York, PA 17403
- Phone
- (717) 741-9229
- Enumerated
- Apr 2, 2015
- Record last updated
- Apr 21, 2026
- Fax
- (717) 741-9605
- Medicare enrollment
- Enrolled (PECOS I20221129000603); accepts Medicare assignment
- Medical or professional school
- University Of Minnesota Medical School, 2021
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 784 in Pennsylvania → Look up another NPI →
Also registered at 25 Monument RD Ste 294
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Matthew Crouse, PHARMDPharmacotherapy Pharmacist1811831753
- Jackson Gao, MDHematology & Oncology Physician1538663208
- Joyce Huang, MD PHDHematology & Oncology Physician1285991638
- Chanh Huynh, MDHematology & Oncology Physician1134324536
- Joseph Kannarkatt, M.D.Hematology & Oncology Physician1124311956
- Shermeen MuhammadFamily Nurse Practitioner1457231128
Verify Grigori Okoev in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD479403Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
32% more Medicare Part D claims than the average hematology & oncology physician in 2024
1,159 Medicare Part D claims for 226 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. 49 claims were for opioids.
Most prescribed
- Anastrozole155 claims
- Dexamethasone122 claims
- Prochlorperazine Maleate97 claims
- Prednisone64 claims
- Acyclovir49 claims
- Eliquis38 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.
Industry payments in 2024: $98.77
8 payments; by number, the most common kind was food and beverage; the largest payer was Alexion Pharmaceuticals, Inc. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Cancer Care Associates OF York, Inc.York, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Grigori Okoev among 784 hematology & oncology physician records in Pennsylvania
Grigori Okoev, M.D. is one of 784 hematology & oncology physician records with a practice address in Pennsylvania. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 78% of them.
- NPI issued2015 · 78% of these records are older, 18% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated2021 · median 2004 among the 553 with a school on file
- Record last updated2026 · 60% 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 Pennsylvania 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 Pennsylvania
There are 784 hematology & oncology physician records in Pennsylvania.
All 784 in Pennsylvania → Every provider in York → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Priyanka Bhatia, M.D.York, PA 174031609031319
- Daniel Efiom-Ekaha, MDYork, PA 174031396783122
- Jackson Gao, MDYork, PA 174031538663208
- Joyce Huang, MD PHDYork, PA 174031285991638
- Chanh Huynh, MDYork, PA 174031134324536
- Annie Kannarkatt, M.D.York, PA 174031750380036
- Joseph Kannarkatt, M.D.York, PA 174031124311956
- Usha Malhotra, MDYork, PA 174031417186354
Common questions
What is Grigori Okoev, M.D.'s NPI number?
Grigori Okoev, M.D.'s National Provider Identifier (NPI) is 1346635679, issued on Apr 2, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Grigori Okoev, M.D. located?
The NPPES record lists a practice address at 25 Monument RD Ste 294, York, PA, 17403. Phone: (717) 741-9229. Providers update this record themselves, so call before visiting.
How can I verify Grigori Okoev, M.D.'s license?
NPPES lists Pennsylvania license number MD479403, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Grigori Okoev, M.D. prescribe under Medicare Part D?
In 2024, Grigori Okoev, M.D. had 1,159 Medicare Part D claims for 226 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
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.