William Sullivan Powell, M.D.
Psychiatry Physician · Spartanburg, SC
William Sullivan Powell, M.D. is a psychiatry physician with a practice address in Spartanburg, South Carolina, and NPI 1497787790, issued on Jul 7, 2006. Check the license (South Carolina 5096, as entered in NPPES) on the South Carolina Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- William Sullivan Powell
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 5096 SC
Self-reported in NPPES; status is on the state search - Practice location
- 250 Dewey Ave, Spartanburg, SC 29303
- Phone
- (864) 583-0366
- Enumerated
- Jul 7, 2006
- Record last updated
- Jul 9, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicaid IDs
- 121328 SC
050964 SC - Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 891 in South Carolina → Look up another NPI →
Also registered at 250 Dewey Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Roberta Aiken, NPFamily Nurse Practitioner1497225346
- Antonio Allen, LPNLicensed Practical Nurse1720869282
- Julia Allen, MASTER OF EDUCATIONCounselor1437218773
- Kala Allen, MAMental Health Counselor1306534490
- Janet Andrews, MAMental Health Counselor1063130540
- Sharita BallardMental Health Counselor1134949134
Verify William Sullivan Powell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Carolina Board of Medical Examiners
Search for license 5096Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average psychiatry physician in 2024
51 Medicare Part D claims, against an average of 1,000 among the 35,054 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.
William Sullivan Powell among 891 psychiatry physician records in South Carolina
William Sullivan Powell, M.D. is one of 891 psychiatry physician records with a practice address in South Carolina. 67% 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 2% of them.
- NPI issued2006 · 2% of these records are older, 63% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 41% of these records are
- Record last updated2007 · 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 2084P0800X and a South Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychiatry Physician providers in South Carolina
There are 891 psychiatry physician records in South Carolina.
All 891 in South Carolina → Every provider in Spartanburg → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Lori Barwick, M.D.Spartanburg, SC 293031518069855
- Janis Browning, DOSpartanburg, SC 293031851494082
- Wayne Denton, MDSpartanburg, SC 293031174580153
- Eve Fields, MDSpartanburg, SC 293031417052234
- Frank Forsthoefel, M.D.Spartanburg, SC 293031578666731
- Harold Fuller, M.D.Spartanburg, SC 293031376578252
- Vonda Gravely, MDSpartanburg, SC 293031053382259
- Catherine Kreiser, M.D.Spartanburg, SC 293031316040587
Common questions
What is William Sullivan Powell, M.D.'s NPI number?
William Sullivan Powell, M.D.'s National Provider Identifier (NPI) is 1497787790, issued on Jul 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Sullivan Powell, M.D. located?
The NPPES record lists a practice address at 250 Dewey Ave, Spartanburg, SC, 29303. Phone: (864) 583-0366. Providers update this record themselves, so call before visiting.
How can I verify William Sullivan Powell, M.D.'s license?
NPPES lists South Carolina license number 5096, 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 William Sullivan Powell, M.D. prescribe under Medicare Part D?
In 2024, William Sullivan Powell, M.D. had 51 Medicare Part D claims; the average among psychiatry physician prescribers was 1,000. 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.