Ryan Mercer, MD
NPI 1598129298 · Ophthalmology Physician · Columbia, SC
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ryan Mercer, MD is a Ophthalmology Physician provider in Columbia, SC (NPI 1598129298).
Provider details
- NPI number
- 1598129298
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
10 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
3,087 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Complete Exam of Visual System92014 | 579 | $116 |
| Established Patient Problem Focused Exam of Visual System92012 | 537 | $82 |
| Measurement of Corneal Curvature and Depth of Eye92136 | 334 | $35 |
| Removal of Cataract With Insertion of Prosthetic Lens66984 | 296 | $446 |
| Imaging of Optic Nerve92133 | 279 | $33 |
| Exam of Visual Field With Extended Testing92083 | 193 | $58 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 29 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 293 | 110 |
| Prednisolone Acetate | 211 | 118 |
| Ofloxacin | 165 | 109 |
| Bimatoprostbrand: Lumigan | 151 | 50 |
| Netarsudil Mesylat/Latanoprostbrand: Rocklatan | 119 | 26 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 110 | 29 |
| Timolol Maleate | 99 | 37 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,348 across 92 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-04-08
- Last updated
- 2021-07-07
- Certified
- 2021-07-07
Frequently asked questions
- What is Ryan Mercer's NPI number?
- Ryan Mercer's National Provider Identifier (NPI) is 1598129298, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ryan Mercer's specialty?
- Ryan Mercer is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Ryan Mercer located?
- Ryan Mercer's practice location on file with NPPES is 1655 Bernardin Ave Ste 100, Columbia, SC 29204-2039.
- What is Ryan Mercer's phone number?
- The practice phone number listed in the NPPES registry for Ryan Mercer is (803) 256-0641.
- Does Ryan Mercer accept Medicare?
- Ryan Mercer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ryan Mercer's NPI active?
- Yes — Ryan Mercer's NPI (1598129298) is active in the NPPES registry as of the last update on 2021-07-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.