Larry Grubb, MD
NPI 1013947589 · Radiation Oncology Physician · Sumter, SC
Enrolled with Medicare as Practitioner - Radiation Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Larry Grubb, MD is a Radiation Oncology Physician provider in Sumter, SC (NPI 1013947589).
Provider details
- NPI number
- 1013947589
- Entity type
- Individual
- Primary specialty
- Radiation Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 15990 (SC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
435 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 | 252 | $43 |
| Radiation Treatment Management, 5 Treatment Sessions77427 | 68 | $181 |
| Calculation of Radiation Therapy Dose77300 | 47 | $31 |
| Design and Construction of Complex Radiation Treatment Device77334 | 37 | $58 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 17 | $170 |
| Complex Radiation Therapy Planning77263 | 14 | $160 |
Typical Medicare-allowed amounts for these services range $31–$181 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 1 distinct drug on file.
| Drug | Part D claims (2024) |
|---|---|
| Tamsulosin Hcl | 12 |
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-03
- Last updated
- 2020-08-20
- Certified
- 2020-08-20
Frequently asked questions
- What is Larry Grubb's NPI number?
- Larry Grubb's National Provider Identifier (NPI) is 1013947589, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Larry Grubb's specialty?
- Larry Grubb is listed in the NPPES registry with a primary specialty of Radiation Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Larry Grubb located?
- Larry Grubb's practice location on file with NPPES is 130 N Washington St, Sumter, SC 29150-4920.
- What is Larry Grubb's phone number?
- The practice phone number listed in the NPPES registry for Larry Grubb is (803) 774-8888.
- Does Larry Grubb accept Medicare?
- Larry Grubb is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Larry Grubb's NPI active?
- Yes — Larry Grubb's NPI (1013947589) is active in the NPPES registry as of the last update on 2020-08-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.