Margaret T. Macdowell, MD
Radiation Oncology Physician · Charleston, SC
Margaret T. Macdowell, MD is a radiation oncology physician with a practice address in Charleston, South Carolina, and NPI 1437123288, issued on Feb 16, 2006. Check the license (South Carolina 15033, as entered in NPPES) on the South Carolina Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Margaret T. Macdowell
- Credential
- MD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- 15033 SC
Self-reported in NPPES; status is on the state search - Practice location
- 9330 Medical Plaza Dr, Charleston, SC 29406
- Phone
- (843) 847-4571
- Enumerated
- Feb 16, 2006
- Record last updated
- Oct 10, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (843) 847-4050
- Medicaid ID
- GP1242 SC
- Medicare enrollment
- Enrolled (PECOS I20120228000559); accepts Medicare assignment
- Medical or professional school
- Medical University Of South Carolina College Of Medicine, 1989
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 80 in South Carolina → Look up another NPI →
Also registered at 9330 Medical Plaza Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Tamir Abbasi, DOStudent in an Organized Health Care Education/Training Program1558200097
- Jennifer Allmon, CRNACertified Registered Nurse Anesthetist1396249819
- Jacquelyn Ammons, ACNPAcute Care Nurse Practitioner1669965810
- Misbha Anjum, MDStudent in an Organized Health Care Education/Training Program1043079692
- Candice AnusewiczEmergency Medicine Physician1891374435
- Mohamad Yman BarghoutStudent in an Organized Health Care Education/Training Program1932048642
Verify Margaret T. Macdowell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Carolina Board of Medical Examiners
Search for license 15033Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average radiation oncology physician in 2024
17 Medicare Part D claims, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D.
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: $157.32
6 payments; by number, the most common kind was food and beverage; the largest payer was Siemens Medical Solutions USA, Inc. The 3,275 providers of this specialty with any payment received $1,897.85 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 2 group practices
- Coastal Carolina Multispecialty Associates LLCWalterboro, SC
- Savannah Multispecialty Associates LLCHilton Head, SC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Margaret T. Macdowell among 80 radiation oncology physician records in South Carolina
Margaret T. Macdowell, MD is one of 80 radiation oncology physician records with a practice address in South Carolina. 89% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 14% of them.
- NPI issued2006 · 14% of these records are older, 46% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 78% of these records are
- Graduated1989 · median 2003 among the 62 with a school on file
- Record last updated2007 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a South Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Radiation Oncology Physician providers in South Carolina
There are 80 radiation oncology physician records in South Carolina.
All 80 in South Carolina → Every provider in Charleston → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Vincent Grzywacz, MDCharleston, SC 294061033603592
- Mary Mulbry, M.D.Charleston, SC 294011356390249
- Clinton Medbery, M.D.Charleston, SC 294121609873421
- Brian Beaty, MD, PHDCharleston, SC 294141215388996
- Louise Clay, M.D.Charleston, SC 294141952363384
- Bradley Depaoli, MDCharleston, SC 294141174085781
- Michael Hall, MDCharleston, SC 294141518459635
- Robena Medbery, M.D.Charleston, SC 294141053364968
Common questions
What is Margaret T. Macdowell, MD's NPI number?
Margaret T. Macdowell, MD's National Provider Identifier (NPI) is 1437123288, issued on Feb 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Margaret T. Macdowell, MD located?
The NPPES record lists a practice address at 9330 Medical Plaza Dr, Charleston, SC, 29406. Phone: (843) 847-4571. Providers update this record themselves, so call before visiting.
How can I verify Margaret T. Macdowell, MD's license?
NPPES lists South Carolina license number 15033, 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 Margaret T. Macdowell, MD prescribe under Medicare Part D?
In 2024, Margaret T. Macdowell, MD had 17 Medicare Part D claims; the average among radiation oncology physician prescribers was 134. 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.