Derek L. Barker, M.D.
Retina Specialist (Ophthalmology) Physician · Columbia, SC
Derek L. Barker, M.D. is a retina specialist (ophthalmology) physician with a practice address in Columbia, South Carolina, and NPI 1982662847, issued on May 2, 2006. Check the license (South Carolina 25453, as entered in NPPES) on the South Carolina Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Derek L. Barker
- Credential
- M.D.
- Primary taxonomy
- Retina Specialist (Ophthalmology) Physician 207WX0107X
- License number
- 25453 SC
Self-reported in NPPES; status is on the state search - Practice location
- 1920 Pickens St, Columbia, SC 29201
- Phone
- (803) 779-3070
- Enumerated
- May 2, 2006
- Record last updated
- Aug 17, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (803) 771-7639
- Medicaid IDs
- 485854502C GA
267966300 FL
485854502A GA - Medicare enrollment
- Enrolled (PECOS I20070105000043); accepts Medicare assignment
- Medical or professional school
- Medical University Of South Carolina College Of Medicine, 1999
- Entity
- Type 1 · individual
8 nearest retina specialist (ophthalmology) physician records → All 20 in South Carolina → Look up another NPI →
Also registered at 1920 Pickens St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- William Cain, MDOphthalmology Physician1902869308
- Stephen Cross, MDOphthalmology Physician1063737351
- Hal Crosswell, MDOphthalmology Physician1639131295
- William Crosswell, MDRetina Specialist (Ophthalmology) Physician1457301996
- Coy Garrick, CRNACertified Registered Nurse Anesthetist1467468470
- Don Jackson, MDOphthalmology Physician1811950215
Verify Derek L. Barker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Carolina Board of Medical Examiners
Search for license 25453Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
19% more Medicare Part D claims than the average retina specialist (ophthalmology) physician in 2024
735 Medicare Part D claims for 203 beneficiaries, against an average of 620 among the 1,449 providers of this specialty who prescribed in Part D. Brand-name drugs were 45% of claims.
Most prescribed
- Prednisolone Acetate201 claims
- Polymyxin B Sul-Trimethoprim80 claims
- Latanoprost62 claims
- Dorzolamide Hcl44 claims
- Timolol Maleate44 claims
- Brimonidine Tartrate43 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.
The MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $187.87
7 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 1,253 providers of this specialty with any payment received $7,667.49 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 one group practice
- Columbia Eye Clinic PAColumbia, SC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Derek L. Barker among 20 retina specialist (ophthalmology) physician records in South Carolina
Derek L. Barker, M.D. is one of 20 retina specialist (ophthalmology) physician records with a practice address in South Carolina. 100% 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 25% of them.
- NPI issued2006 · 25% of these records are older, 35% newer
- In a Medicare fileYes · 100% of these records are
- In the CMS Doctors and Clinicians fileYes · 90% of these records are
- Graduated1999 · median 1998 among the 18 with a school on file
- Record last updated2020 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207WX0107X and a South Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Retina Specialist (Ophthalmology) Physician providers in South Carolina
There are 20 retina specialist (ophthalmology) physician records in South Carolina.
All 20 in South Carolina → Every provider in Columbia → Retina Specialist (Ophthalmology) Physician nationwide →
The 8 retina specialist (ophthalmology) physician records with the nearest ZIP codes
- William Crosswell, MDColumbia, SC 292011457301996
- Barron Fishburne, M.D.Columbia, SC 292231316948243
- Jeffrey Gross, M.D.Columbia, SC 292231427059351
- Stephen Hypes, D.O.West Columbia, SC 291691184064669
- David Johnson, MDWest Columbia, SC 291691811942527
- Nitin Nigam, MDWest Columbia, SC 291691295058790
- Daniel Will, M.D.West Columbia, SC 291691861485906
- Jeffrey Blice, M.D.Charleston, SC 294251215930805
Common questions
What is Derek L. Barker, M.D.'s NPI number?
Derek L. Barker, M.D.'s National Provider Identifier (NPI) is 1982662847, issued on May 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Derek L. Barker, M.D. located?
The NPPES record lists a practice address at 1920 Pickens St, Columbia, SC, 29201. Phone: (803) 779-3070. Providers update this record themselves, so call before visiting.
How can I verify Derek L. Barker, M.D.'s license?
NPPES lists South Carolina license number 25453, 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 Derek L. Barker, M.D. prescribe under Medicare Part D?
In 2024, Derek L. Barker, M.D. had 735 Medicare Part D claims for 203 beneficiaries; the average among retina specialist (ophthalmology) physician prescribers was 620. Part D covers Medicare prescriptions only.
What is Derek L. Barker, M.D.'s MIPS final score?
The 2023 MIPS final score is 100 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.