Irl Greenwell, M.D.
NPI 1043573009 · Hematology & Oncology Physician · Charleston, SC
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Irl Greenwell, M.D. is a Hematology & Oncology Physician provider in Charleston, SC (NPI 1043573009).
Provider details
- NPI number
- 1043573009
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 52275 (SC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
13 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
733 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 190 | $111 |
| 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'SG2211 | 159 | $16 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 61 | $74 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 51 | $109 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 47 | $91 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Acyclovir | 60 | 26 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 17 | — |
| Zanubrutinibbrand: Brukinsa | 16 | — |
| Prednisone | 14 | 13 |
| Allopurinol | 13 | 11 |
| Oxycodone Hcl | 13 | — |
| Anastrozole | 11 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,186 across 52 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
Registry dates
- Enumerated
- 2012-06-24
- Last updated
- 2025-01-04
- Certified
- 2025-01-04
Frequently asked questions
- What is Irl Greenwell's NPI number?
- Irl Greenwell's National Provider Identifier (NPI) is 1043573009, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Irl Greenwell's specialty?
- Irl Greenwell is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Irl Greenwell located?
- Irl Greenwell's practice location on file with NPPES is 2085 Henry Tecklenburg Dr, Charleston, SC 29414-7710.
- What is Irl Greenwell's phone number?
- The practice phone number listed in the NPPES registry for Irl Greenwell is (843) 577-6957.
- Does Irl Greenwell accept Medicare?
- Irl Greenwell is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Irl Greenwell's NPI active?
- Yes — Irl Greenwell's NPI (1043573009) is active in the NPPES registry as of the last update on 2025-01-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.