Sara Ann Armstrong, MD
Internal Medicine Physician · Charleston, SC
Sara Ann Armstrong, MD is an internal medicine physician with a practice address in Charleston, South Carolina, and NPI 1689359663, issued on Jun 19, 2023. Check the license (South Carolina 90152, as entered in NPPES) on the South Carolina Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Sara Ann Armstrong
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 90152 SC
Self-reported in NPPES; status is on the state search - Practice location
- 171 Ashley Ave, Charleston, SC 29425
- Phone
- (843) 792-2300
- Enumerated
- Jun 19, 2023
- Record last updated
- Aug 3, 2026
- Medicare enrollment
- Enrolled (PECOS I20260507000385); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,881 in South Carolina → Look up another NPI →
Also registered at 171 Ashley Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Sara Ann Armstrong in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Carolina Board of Medical Examiners
Search for license 90152Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average internal medicine physician in 2024
367 Medicare Part D claims for 84 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium24 claims
- Albuterol Sulfate Hfa23 claims
- Ozempic18 claims
- Rosuvastatin Calcium15 claims
- Carvedilol11 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.
Sara Ann Armstrong among 1,881 internal medicine physician records in South Carolina
Sara Ann Armstrong, MD is one of 1,881 internal medicine physician records with a practice address in South Carolina. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 86% of them.
- NPI issued2023 · 86% of these records are older, 9% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2023 · median 2006 among the 1,119 with a school on file
- Record last updated2026 · 46% 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 South Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
427 internal medicine physician records list a practice address in Charleston
They are 427 of the 10,840 NPPES records with a practice address in Charleston, and 1,881 internal medicine physician records in South Carolina.
All 1,881 in South Carolina → Every provider in Charleston → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Sujeev Bains, MDCharleston, SC 294251609889989
- Elisha Brownfield, MDCharleston, SC 294251639287683
- Ernest Clyburn, MDCharleston, SC 294251235247271
- Kimberly Davis, MDCharleston, SC 294251366550311
- John Feussner, MDCharleston, SC 294251689782534
- Jennifer Goldstein, MDCharleston, SC 294251164472593
- Robert Ishak, M.D.Charleston, SC 294251295727790
- Brad Keith, MDCharleston, SC 294251578671442
Common questions
What is Sara Ann Armstrong, MD's NPI number?
Sara Ann Armstrong, MD's National Provider Identifier (NPI) is 1689359663, issued on Jun 19, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Sara Ann Armstrong, MD located?
The NPPES record lists a practice address at 171 Ashley Ave, Charleston, SC, 29425. Phone: (843) 792-2300. Providers update this record themselves, so call before visiting.
How can I verify Sara Ann Armstrong, MD's license?
NPPES lists South Carolina license number 90152, 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 Sara Ann Armstrong, MD prescribe under Medicare Part D?
In 2024, Sara Ann Armstrong, MD had 367 Medicare Part D claims for 84 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.