Mark Mcgannon, MD
NPI 1538275961 · Ophthalmology Physician · Orangeburg, SC
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Mcgannon, MD is a Ophthalmology Physician provider in Orangeburg, SC (NPI 1538275961).
Provider details
- NPI number
- 1538275961
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 8845 (SC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
580 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 | 260 | $115 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 167 | $85 |
| Microfluid Analysis of Tears83861 | 44 | $22 |
| Exam of Visual Field With Extended Testing92083 | 39 | $58 |
| Imaging of Optic Nerve92133 | 36 | $33 |
| New Patient Complete Exam of Visual System92004 | 34 | $134 |
Typical Medicare-allowed amounts for these services range $22–$134 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 17 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 1,008 | 307 |
| Timolol Maleate | 294 | 102 |
| Brimonidine Tartrate/Timololbrand: Brimonidine Tartrate-Timolol | 105 | 24 |
| Brimonidine Tartrate | 68 | 20 |
| Prednisolone Acetate | 66 | 55 |
| Bimatoprostbrand: Lumigan | 47 | 17 |
| Acetazolamide | 32 | 11 |
| Travoprost |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$22 across 1 record (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
- 2006-08-21
- Last updated
- 2007-10-09
Frequently asked questions
- What is Mark Mcgannon's NPI number?
- Mark Mcgannon's National Provider Identifier (NPI) is 1538275961, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Mcgannon's specialty?
- Mark Mcgannon is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Mcgannon located?
- Mark Mcgannon's practice location on file with NPPES is 1190 Summers Ave, Orangeburg, SC 29115-4922.
- What is Mark Mcgannon's phone number?
- The practice phone number listed in the NPPES registry for Mark Mcgannon is (803) 534-0266.
- Does Mark Mcgannon accept Medicare?
- Mark Mcgannon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Mcgannon's NPI active?
- Yes — Mark Mcgannon's NPI (1538275961) is active in the NPPES registry as of the last update on 2007-10-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.