Anna Sullivan Overby
Internal Medicine Physician · Winston Salem, NC
Anna Sullivan Overby is an internal medicine physician with a practice address in Winston Salem, North Carolina, and NPI 1285073395, issued on Jun 21, 2013. Check the license (North Carolina 2016-00984, as entered in NPPES) on the North Carolina Medical Board; the Medicare figures below come from public CMS files.
- Name
- Anna Sullivan Overby
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 2016-00984 NC
0116026109 VA
Self-reported in NPPES; status is on the state search - Practice location
- 3333 Silas Creek Pkwy, Winston Salem, NC 27103
- Phone
- (336) 718-7080
- Enumerated
- Jun 21, 2013
- Record last updated
- Oct 25, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (336) 718-9622
- Medicare enrollment
- Enrolled (PECOS I20161116001390); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 4,056 in North Carolina → Look up another NPI →
Also registered at 3333 Silas Creek Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Anna Sullivan Overby in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNorth Carolina Medical Board
Search for license 2016-00984Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average internal medicine physician in 2024
528 Medicare Part D claims for 211 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 16 claims were for opioids.
Most prescribed
- Pantoprazole Sodium41 claims
- Cefdinir35 claims
- Azithromycin25 claims
- Prednisone22 claims
- Amoxicillin-Clavulanate Potass17 claims
- Eliquis15 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.
Bills Medicare through one group practice
- Fletcher Hospital IncHendersonville, NC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Anna Sullivan Overby among 4,056 internal medicine physician records in North Carolina
Anna Sullivan Overby is one of 4,056 internal medicine physician records with a practice address in North Carolina. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 71% of them.
- NPI issued2013 · 71% of these records are older, 26% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2013 · median 2004 among the 2,706 with a school on file
- Record last updated2020 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a North Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
218 internal medicine physician records list a practice address in Winston Salem
They are 218 of the 10,040 NPPES records with a practice address in Winston Salem, and 4,056 internal medicine physician records in North Carolina.
All 4,056 in North Carolina → Every provider in Winston Salem → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Tamas Bathory, MDWinston Salem, NC 271031699754689
- Robert Bloomfield, MDMSWinston Salem, NC 271031962496810
- Bruce Brasher, MDWinston Salem, NC 271031992783971
- Edwin Chee, MDWinston Salem, NC 271031881674968
- David Collins, M.D.Winston Salem, NC 271031962407072
- Peter Cullen, MDWinston Salem, NC 271031568442580
- Jennifer Day, MDWinston Salem, NC 271031427038488
- James Dilley, M.D.Winston Salem, NC 271031801895339
Common questions
What is Anna Sullivan Overby's NPI number?
Anna Sullivan Overby's National Provider Identifier (NPI) is 1285073395, issued on Jun 21, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Anna Sullivan Overby located?
The NPPES record lists a practice address at 3333 Silas Creek Pkwy, Winston Salem, NC, 27103. Phone: (336) 718-7080. Providers update this record themselves, so call before visiting.
How can I verify Anna Sullivan Overby's license?
NPPES lists North Carolina license number 2016-00984, as entered by the provider. Search the North Carolina Medical Board at https://portal.ncmedboard.org/verification/search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Anna Sullivan Overby prescribe under Medicare Part D?
In 2024, Anna Sullivan Overby had 528 Medicare Part D claims for 211 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.