Grant Mckenzie, MD
NPI 1134651599 · Radiation Oncology Physician · Winston Salem, NC
Enrolled with Medicare as Practitioner - Radiation Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Grant Mckenzie, MD is a Radiation Oncology Physician provider in Winston Salem, NC (NPI 1134651599).
Provider details
- NPI number
- 1134651599
- Entity type
- Individual
- Primary specialty
- Radiation Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- R5143 (KY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
9 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
184 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Ct Guidance for Insertion of Radiation Therapy Fields77014 | 69 | $42 |
| Calculation of Radiation Therapy Dose77300 | 41 | $31 |
| Radiation Treatment Management, 5 Treatment Sessions77427 | 21 | $179 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 19 | $169 |
| Prolonged Office Or Other Outpatient Evaluation and Management Service(s) Beyond the Maximum Required Time of the Primary Procedure Which Has Been Selected Using Total Time on the Date of the Primary Service; Each Additional 15 Minutes By the Physician OrG2212 | 18 | $29 |
| Complex Radiation Therapy Planning77263 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 2 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Mometasone Furoate | 17 | 15 |
| Tamsulosin Hcl | 15 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$544 across 16 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (2)
- 529 S Jackson StLouisville, KY 40202-3229Phone: (502) 562-4360
- 1710 Kernersville Medical Pkwy Ste 116Kernersville, NC 27284-7156Phone: (336) 564-4090
Registry dates
- Enumerated
- 2017-04-03
- Last updated
- 2024-06-12
- Certified
- 2024-06-12
Frequently asked questions
- What is Grant Mckenzie's NPI number?
- Grant Mckenzie's National Provider Identifier (NPI) is 1134651599, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Grant Mckenzie's specialty?
- Grant Mckenzie is listed in the NPPES registry with a primary specialty of Radiation Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Grant Mckenzie located?
- Grant Mckenzie's practice location on file with NPPES is 3333 Silas Creek Pkwy, Winston Salem, NC 27103-3013.
- What is Grant Mckenzie's phone number?
- The practice phone number listed in the NPPES registry for Grant Mckenzie is (336) 718-3013.
- Does Grant Mckenzie accept Medicare?
- Grant Mckenzie is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Grant Mckenzie's NPI active?
- Yes — Grant Mckenzie's NPI (1134651599) is active in the NPPES registry as of the last update on 2024-06-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.