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OAKHILL, GREGORYM.D. NPI 1356312466 Clinician

Hematology-Oncology · FAYETTEVILLE, AR

Specialty Hematology-Oncology — from billed Medicare claims
Trained MEDICAL UNIVERSITY OF SOUTH CAROLINA COLLEGE OF MEDICINE — medical school, self-reported to CMS
In practice about 32 years since medical school (class of 1994, self-reported to CMS)
Location FAYETTEVILLE, AR · NPPES registered location
Active in data Billed Medicare 2020–2024 (5 consecutive years)
Scale 128 codes billed · 296,572 disclosed services (CY2024 — most recent year in data)
Current groups

Group affiliation since 2019

20192026
HIGHLANDS ONCOLOGY GROUP PA
2019–2026

The roster archive begins in 2019, so a span starting at 2019 may reach back further. Membership spans only — no volume is attributed to any group here.

NPPES registry · CMS Doctors & Clinicians registry · Medicare Part B physician/supplier claims · NPPES record last updated 2020-03

Year: 2024 · 2023 · 2022  · 2021  · 2020 

Provider overview · all codes · CY2024

The full analytics for this provider

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The billed-volume positioning, practice focus, and economics behind this provider — computed on the same disclosed Medicare Part B data.

This provider's disclosed Medicare payments across all codes were in CY2024. Unlock to see the figure.

  • Payment, service & beneficiary totals — the disclosed scale, all codes
  • Practice profile — focus & reach — top codes by share of services
  • Office vs. facility setting mix — place-of-service code split
  • Volume over five years — discrete yearly counts, no rate
  • Peer positioning — service volume — percentile among specialty peers, cohort & year disclosed
  • Peer positioning — code breadth — how many codes billed, vs peers

Peer positioning shows billed-volume and code-breadth positions among specialty peers, not measures of care (a provider's true volume position can only be higher, never lower). All figures disclosed Medicare Part B fee-for-service; volumes are personal to this NPI, not attributed to any group.

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Procedures billed to Medicare Part B (2024)

Medicare Part B FFS · CY2024 · as published by CMS
CodeDescription Services Beneficiary-episodes Avg charge Avg Medicare payment
Q9967 Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml
A9575 Injection, gadoterate meglumine, 0.1 ml
J9271 Injection, pembrolizumab, 1 mg
Q5125 Injection, filgrastim-ayow, biosimilar, (releuko), 1 microgram
Q0138 Injection, ferumoxytol, for treatment of iron deficiency anemia, 1 mg (non-esrd use)
J9299 Injection, nivolumab, 1 mg
J1071 Injection, testosterone cypionate, 1 mg
J9267 Injection, paclitaxel, 1 mg
J0897 Injection, denosumab, 1 mg
J1453 Injection, fosaprepitant, 1 mg
J1561 Injection, immune globulin, (gamunex-c/gammaked), non-lyophilized (e.g., liquid), 500 mg
J0885 Injection, epoetin alfa, (for non-esrd use), 1000 units
J1437 Injection, ferric derisomaltose, 10 mg
J1100 Injection, dexamethasone sodium phosphate, 1 mg
82784 Gammaglobulin (immune system protein) measurement
85025 Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count
Q5123 Injection, rituximab-arrx, biosimilar, (riabni), 10 mg
80053 Blood test, comprehensive group of blood chemicals
83735 Magnesium level
84100 Phosphate level
82248 Bilirubin level, direct
83615 Lactate dehydrogenase (enzyme) level
84550 Uric acid level, blood
Q5126 Injection, bevacizumab-maly, biosimilar, (alymsys), 10 mg
J2405 Injection, ondansetron hydrochloride, per 1 mg
J2469 Injection, palonosetron hcl, 25 mcg
J2919 Injection, methylprednisolone sodium succinate, 5 mg
J0894 Injection, decitabine, 1 mg
83540 Iron level
83550 Iron binding capacity
82728 Ferritin (blood protein) level
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
84443 Blood test, thyroid stimulating hormone (tsh)
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
96372 Injection of drug or substance under skin or into muscle
96413 Administration of chemotherapy into vein, 1 hour or less
J9045 Injection, carboplatin, 50 mg
82306 Vitamin d-3 level
96367 Infusion into a vein for therapy, prevention, or diagnosis, additional sequential infusion, 1 hour or less
G2211 Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's
82746 Folic acid level, serum
82607 Cyanocobalamin (vitamin b-12) level
74178 Ct scan of abdomen and pelvis before and after contrast
71260 Ct scan of chest with contrast
J3480 Injection, potassium chloride, per 2 meq
J0640 Injection, leucovorin calcium, per 50 mg
82533 Cortisol (hormone) measurement, total
J1200 Injection, diphenhydramine hcl, up to 50 mg
96365 Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less
J3475 Injection, magnesium sulfate, per 500 mg
80400 Hormonal panel for adrenal gland assessment (adrenal gland insufficiency)
96366 Infusion into a vein for therapy, prevention, or diagnosis, each additional hour
J9206 Injection, irinotecan, 20 mg
J3489 Injection, zoledronic acid, 1 mg
Q5108 Injection, pegfilgrastim-jmdb (fulphila), biosimilar, 0.5 mg
A9552 Fluorodeoxyglucose f-18 fdg, diagnostic, per study dose, up to 45 millicuries
J9190 Injection, fluorouracil, 500 mg
78815 Nuclear medicine study from skull base to mid-thigh with ct scan
70491 Ct scan of soft tissue of neck with contrast
96375 Injection of additional new drug or substance into vein
J9201 Injection, gemcitabine hydrochloride, not otherwise specified, 200 mg
J3420 Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg
99490 Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month
A9573 Injection, gadopiclenol, 1 ml
84153 Psa (prostate specific antigen) measurement, total
J7030 Infusion, normal saline solution , 1000 cc
82977 Glutamyltransferase (liver enzyme) level
83521 Measurement of immunoglobulin light chains
96417 Administration of additional new drug or substance into vein, 1 hour or less
J3490 Unclassified drugs
J9060 Injection, cisplatin, powder or solution, 10 mg
36415 Insertion of needle into vein for collection of blood sample
96360 Infusion into a vein for hydration, 31-60 minutes
70553 Mri scan of brain before and after contrast
96415 Administration of chemotherapy into vein, each additional hour
85610 Blood test, clotting time
96401 Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle
82565 Blood creatinine level
86140 Measurement c-reactive protein for detection of infection or inflammation
99213 Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
96402 Administration of hormonal anti-neoplastic chemotherapy under skin or into muscle
82378 Carcinoembryonic antigen (cea) protein level
80061 Blood test, lipids (cholesterol and triglycerides)
82232 Beta-2 microglobulin (protein) level
99439 Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month
86300 Immunologic analysis for detection of tumor antigen, quantitative; ca 15-3
36591 Collection of blood sample from implanted device
J9217 Leuprolide acetate (for depot suspension), 7.5 mg
71046 X-ray of chest, 2 views
81003 Automated urinalysis test
J2250 Injection, midazolam hydrochloride, per 1 mg
71250 Ct scan of chest without contrast
98976 Device supply with scheduled recording and transmission for remote monitoring of respiratory system, per 30 days
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more
96411 Administration of additional new drug or substance into vein using push technique
84436 Thyroxine (thyroid chemical), total
86304 Immunologic analysis for detection of tumor antigen, quantitative; ca 125
74176 Ct scan of abdomen and pelvis without contrast
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes
96361 Infusion into a vein for hydration, each additional hour
96368 Infusion into a vein for therapy, prevention, or diagnosis concurrent with another infusion
99195 Drawing of blood for a medical problem
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
70470 Ct scan of head or brain before and after contrast
74183 Mri scan of abdomen before and after contrast
78816 Nuclear medicine study whole body with ct scan
96409 Administration of chemotherapy into vein using push technique
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional
G0008 Administration of influenza virus vaccine
90653 Influenza vaccine, inactivated
96374 Injection of drug or substance into vein
96523 Irrigation of implanted venous access drug delivery device
J1940 Injection, furosemide, up to 20 mg
84439 Thyroxine (thyroid chemical), free
93356 Heart muscle strain imaging
96416 Administration of prolonged chemotherapy into vein
71270 Ct scan of chest before and after contrast
J2175 Injection, meperidine hydrochloride, per 100 mg
93306 Ultrasound of heart with color-depicted blood flow, rate, direction and valve function
99239 Hospital discharge day management, more than 30 minutes
81001 Manual urinalysis test with examination using microscope, automated
90480 Admn sarscov2 vacc 1 dose
80048 Blood test, basic group of blood chemicals (calcium, total)
98980 Remote therapeutic monitoring treatment management services by physician or other qualified health care professional, first 20 minutes per calendar month
38222 Biopsy and aspiration of bone marrow sample for diagnosis
71275 Ct scan of blood vessels of chest with contrast
72158 Mri scan of lower spinal canal before and after contrast

These are this provider's own Medicare Part B fee-for-service volumes (CMS public data). CMS suppresses rows with fewer than 11 beneficiaries, so low-volume codes may be missing entirely — absence is not zero. Beneficiary-episodes count CMS's per-setting beneficiary figures, not unique patients. Average charge and average Medicare payment are weighted by service volume across office and facility settings. Volumes on this page are personal to the NPI and are not attributed to any physician group. See Methods & Sources.