Irl Brian Greenwell, M.D.
Hematology & Oncology Physician · Charleston, SC
Irl Brian Greenwell, M.D. is a hematology & oncology physician with a practice address in Charleston, South Carolina, and NPI 1043573009, issued on Jun 24, 2012. Check the license (South Carolina 52275, as entered in NPPES) on the South Carolina Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Irl Brian Greenwell
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 52275 SC
Self-reported in NPPES; status is on the state search - Practice location
- 2085 Henry Tecklenburg Dr, Charleston, SC 29414
- Phone
- (843) 577-6957
- Enumerated
- Jun 24, 2012
- Record last updated
- Jan 4, 2025
- Fax
- (843) 577-6523
- Medicaid ID
- 522759 SC
- Medicare enrollment
- Enrolled (PECOS I20180815000614); accepts Medicare assignment
- Medical or professional school
- Medical University Of South Carolina College Of Medicine, 2012
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 181 in South Carolina → Look up another NPI →
Also registered at 2085 Henry Tecklenburg Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Linda Baer, APRNFamily Nurse Practitioner1821255811
- Diane Burdsal, AGPCNPNurse Practitioner1417421470
- Delaney Canton, DNP, FNPFamily Nurse Practitioner1134080765
- Stephanie Carson, AGACNPAcute Care Nurse Practitioner1609379288
- Heather Cheek, PA-CMedical Physician Assistant1740235407
- Kelly Dollinger, ACNPAcute Care Nurse Practitioner1407232978
Verify Irl Brian Greenwell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Carolina Board of Medical Examiners
Search for license 52275Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
61% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
342 Medicare Part D claims for 90 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 24% of claims. 28 claims were for opioids.
Most prescribed
- Acyclovir60 claims
- Sulfamethoxazole-Trimethoprim17 claims
- Brukinsa16 claims
- Prednisone14 claims
- Allopurinol13 claims
- Oxycodone Hcl13 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $1,186.21
52 payments; by number, the most common kind was food and beverage; the largest payer was E.R. Squibb & Sons, L.L.C. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Bon Secours St Francis Xavier Hospital IncCharleston, SC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Irl Brian Greenwell among 181 hematology & oncology physician records in South Carolina
Irl Brian Greenwell, M.D. is one of 181 hematology & oncology physician records with a practice address in South Carolina. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 74% of them.
- NPI issued2012 · 74% of these records are older, 23% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2012 · median 2006 among the 139 with a school on file
- Record last updated2025 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a South Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in South Carolina
There are 181 hematology & oncology physician records in South Carolina.
All 181 in South Carolina → Every provider in Charleston → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- David Ellison, M.D.Charleston, SC 294141740235928
- George Geils, M.D.Charleston, SC 294141093773657
- George Keogh, M.D.Charleston, SC 294141487611505
- Brian Lingerfelt, MDCharleston, SC 294141942418744
- James Orcutt, M.D.Charleston, SC 294141336107424
- Nicholas Schmidt, MDCharleston, SC 294141235592221
- Shelly Shand, M.D.Charleston, SC 294141558507848
- Ziad Skaff, MDCharleston, SC 294141770601734
Common questions
What is Irl Brian Greenwell, M.D.'s NPI number?
Irl Brian Greenwell, M.D.'s National Provider Identifier (NPI) is 1043573009, issued on Jun 24, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Irl Brian Greenwell, M.D. located?
The NPPES record lists a practice address at 2085 Henry Tecklenburg Dr, Charleston, SC, 29414. Phone: (843) 577-6957. Providers update this record themselves, so call before visiting.
How can I verify Irl Brian Greenwell, M.D.'s license?
NPPES lists South Carolina license number 52275, as entered by the provider. Search the South Carolina Board of Medical Examiners at https://verify.llronline.com/LicLookup/Med/Med.aspx?div=22. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Irl Brian Greenwell, M.D. prescribe under Medicare Part D?
In 2024, Irl Brian Greenwell, M.D. had 342 Medicare Part D claims for 90 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.