Doctor profile · Federal record

Dr. Grigori Okoev, M.D.

Hematology & Oncology Physician (CMS: Hematology/Oncology) · Internal Medicine Physician · Hematology & Oncology Physician · York, PA

  • NPI 1346635679
  • Accepts Medicare
  • 5 yrs in practice
  • Licensed in 2 states
  • Male
  • Solo practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
25 Monument RD Ste 294
York, PA 174035049
(717) 741-9229
fax (717) 741-9605
Additional location
9103 Franklin Square Dr
Rosedale, MD 212373900
(443) 777-7147
Mailing address
10751 Enfield Dr
Woodstock, MD 211631417

Credentials & registration

NPPES · NUCC
NPI registered
April 2015 — 11 yrs on file
Profile last updated
February 15, 2023
Year of graduation
2021 — 5 yrs since
Specialty taxonomy
207RH0003X — NUCC code
State licenses (2)
Pennsylvania #MD479403 · Maryland #D0091105

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1346635679. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
44,062
Distinct HCPCS
10
Medicare allowed
$1,133,901
HCPCS Description Services Patients Avg allowed
J0881 Injection, darbepoetin alfa, 1 microgram (non-esrd use) 8,685 20 $3
J9271 Injection, pembrolizumab, 1 mg 7,200 20 $52
J9299 Injection, nivolumab, 1 mg 6,340 16 $30
J1453 Injection, fosaprepitant, 1 mg 3,750 17 $0
J0897 Injection, denosumab, 1 mg 3,540 28 $24
J9144 Injection, daratumumab, 10 mg and hyaluronidase-fihj 3,060 11 $48
J1437 Injection, ferric derisomaltose, 10 mg 1,700 17 $20
J1100 Injection, dexamethasone sodium phosphate, 1 mg 1,210 65 $0
J9041 Injection, bortezomib, 0.1 mg 1,015 13 $3
36415 Insertion of needle into vein for collection of blood sample 854 259 $8

In context: peer comparison

Among 5 peers in York Hematology & Oncology Physician, average services per provider: 1,315. This provider delivers 34× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$99
Transactions
8
Manufacturers
5
Payer (manufacturer) Industry Txns Amount
Alexion Pharmaceuticals, INC. 2 $26.44
Fennec Pharmaceuticals, INC. 3 $26.10
Spectrum Pharmaceuticals INC. 1 $18.98
Genzyme Corporation 1 $14.14
Fresenius Kabi USA, LLC 1 $13.11

By nature of payment

Food and Beverage
$99

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
569
Patients
205
Total drug cost
$26,088
Drug Type Claims Patients Total cost
Dexamethasone Generic 140 41 $1,384
Prochlorperazine Maleate Generic 102 64 $1,262
Anastrozole Generic 82 27 $1,960
Prednisone Generic 40 17 $340
Eliquis (Apixaban) Brand 28 11 $16,312
Ondansetron Odt (Ondansetron) Brand 22 18 $246
Levothyroxine Sodium Generic 21 0 $279
Sulfamethoxazole-Trimethoprim (Sulfamethoxazole/Trimethoprim) Brand 21 0 $111
Potassium Chloride Generic 20 15 $222
Acyclovir Generic 18 0 $293

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Grigori Okoev's medical specialty?
Dr. Grigori Okoev practices Hematology & Oncology Physician in York, PA.
Where does Dr. Grigori Okoev practice?
Dr. Grigori Okoev practices at 25 Monument RD Ste 294, York, PA 174035049. Office phone: 7177419229.
What is Dr. Grigori Okoev's NPI?
Dr. Grigori Okoev's National Provider Identifier (NPI) is 1346635679, issued by NPPES.
Does Dr. Grigori Okoev accept Medicare assignment?
Yes. Dr. Grigori Okoev accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Grigori Okoev commonly perform?
Top Medicare-reported procedures in 2023: Injection, darbepoetin alfa, 1 microgram (non-esrd use) (HCPCS J0881); Injection, pembrolizumab, 1 mg (HCPCS J9271); Injection, nivolumab, 1 mg (HCPCS J9299). Source: CMS Medicare Physician & Other Practitioners file.