Richard T. Oster, D.O.
Internal Medicine Physician · Greenwood, SC
Richard T. Oster, D.O. is an internal medicine physician with a practice address in Greenwood, South Carolina, and NPI 1447268727, issued on Aug 3, 2006. Check the license (South Carolina 39228, as entered in NPPES) on the South Carolina Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Richard T. Oster
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 39228 SC
050238 GA
Self-reported in NPPES; status is on the state search - Practice location
- 1325 Spring St, Greenwood, SC 29646
- Phone
- (864) 725-4272
- Enumerated
- Aug 3, 2006
- Record last updated
- Jul 21, 2022
- Fax
- (864) 725-4452
- Medicaid IDs
- 000918871A GA
392285 SC - Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,881 in South Carolina → Look up another NPI →
Also registered at 1325 Spring St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Tinu Abraham, MDInternal Medicine Physician1194354399
- Chandler Adams, PA-CPhysician Assistant1205465820
- Matthew Adams, MDFamily Medicine Physician1467136135
- Kelly Addy, NPFamily Nurse Practitioner1790215291
- Sunil Agarwal, MDPain Medicine (Anesthesiology) Physician1780113506
- Solomon Amemasor, DODiagnostic Radiology Physician1285128892
Verify Richard T. Oster in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Carolina Board of Medical Examiners
Search for license 39228Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average internal medicine physician in 2024
195 Medicare Part D claims for 18 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 11 claims were for opioids.
Most prescribed
- Alprazolam12 claims
- Estradiol (Twice Weekly)12 claims
- Temazepam12 claims
- Amlodipine Besylate11 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.
Richard T. Oster among 1,881 internal medicine physician records in South Carolina
Richard T. Oster, D.O. 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 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 58% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 60% of these records are
- Record last updated2022 · 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).
23 internal medicine physician records list a practice address in Greenwood
They are 23 of the 1,262 NPPES records with a practice address in Greenwood, and 1,881 internal medicine physician records in South Carolina.
All 1,881 in South Carolina → Every provider in Greenwood → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Darryl Best, M.D.Greenwood, SC 296461215973219
- Samuel Burnett III, M.D.Greenwood, SC 296461942296074
- Orr Cobb, M.D.Greenwood, SC 296461952397085
- George Cone, MDGreenwood, SC 296461689666703
- Brian Gunter, MDGreenwood, SC 296461255497640
- Russell Hall, M.D.Greenwood, SC 296461265429492
- John Holman, M.D.Greenwood, SC 296461922095405
- Carlos Manalich, M.D.Greenwood, SC 296461003871997
Common questions
What is Richard T. Oster, D.O.'s NPI number?
Richard T. Oster, D.O.'s National Provider Identifier (NPI) is 1447268727, issued on Aug 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Richard T. Oster, D.O. located?
The NPPES record lists a practice address at 1325 Spring St, Greenwood, SC, 29646. Phone: (864) 725-4272. Providers update this record themselves, so call before visiting.
How can I verify Richard T. Oster, D.O.'s license?
NPPES lists South Carolina license number 39228, 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 Richard T. Oster, D.O. prescribe under Medicare Part D?
In 2024, Richard T. Oster, D.O. had 195 Medicare Part D claims for 18 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.