Ryan Nelson Mercer, MD
Ophthalmology Physician · Columbia, SC
Ryan Nelson Mercer, MD is an ophthalmology physician with a practice address in Columbia, South Carolina, and NPI 1598129298, issued on Apr 8, 2016. Check the license (South Carolina 39681, as entered in NPPES) on the South Carolina Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Ryan Nelson Mercer
- Credential
- MD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- 39681 SC
Self-reported in NPPES; status is on the state search - Practice location
- 1655 Bernardin Ave Ste 100, Columbia, SC 29204
- Phone
- (803) 256-0641
- Enumerated
- Apr 8, 2016
- Record last updated
- Jul 7, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (803) 779-3649
- Medicare enrollment
- Enrolled (PECOS I20200629003953); accepts Medicare assignment
- Medical or professional school
- Medical University Of South Carolina College Of Medicine, 2016
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 329 in South Carolina → Look up another NPI →
Verify Ryan Nelson Mercer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Carolina Board of Medical Examiners
Search for license 39681Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
38% more Medicare Part D claims than the average ophthalmology physician in 2024
2,090 Medicare Part D claims for 470 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 54% of claims.
Most prescribed
- Latanoprost293 claims
- Prednisolone Acetate211 claims
- Ofloxacin165 claims
- Lumigan151 claims
- Rocklatan119 claims
- Dorzolamide-Timolol110 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.
Industry payments in 2024: $2,347.88
92 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,221 providers of this specialty with any payment received $4,535.02 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
- The Eye Center PAColumbia, SC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ryan Nelson Mercer among 329 ophthalmology physician records in South Carolina
Ryan Nelson Mercer, MD is one of 329 ophthalmology physician records with a practice address in South Carolina. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 84% of them.
- NPI issued2016 · 84% of these records are older, 13% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2016 · median 2002 among the 219 with a school on file
- Record last updated2021 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a South Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in South Carolina
There are 329 ophthalmology physician records in South Carolina.
All 329 in South Carolina → Every provider in Columbia → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Beau Bryan, M.D.Columbia, SC 292041831414481
- Matthew Clary, M.D.Columbia, SC 292041538345004
- Deborah Fyffe, MDColumbia, SC 292041437108925
- Caroline GibbesCola, SC 292041194762831
- John Hindersman, MDColumbia, SC 292041285698746
- Robert Huff, MDColumbia, SC 292041134157779
- Kelly Morris, M.D.Columbia, SC 292041538169800
- Lucas Platt, D.O.Columbia, SC 292041053385062
Common questions
What is Ryan Nelson Mercer, MD's NPI number?
Ryan Nelson Mercer, MD's National Provider Identifier (NPI) is 1598129298, issued on Apr 8, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Ryan Nelson Mercer, MD located?
The NPPES record lists a practice address at 1655 Bernardin Ave Ste 100, Columbia, SC, 29204. Phone: (803) 256-0641. Providers update this record themselves, so call before visiting.
How can I verify Ryan Nelson Mercer, MD's license?
NPPES lists South Carolina license number 39681, 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 Ryan Nelson Mercer, MD prescribe under Medicare Part D?
In 2024, Ryan Nelson Mercer, MD had 2,090 Medicare Part D claims for 470 beneficiaries; the average among ophthalmology physician prescribers was 1,518. 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.