Mark Mayo, MD
NPI 1538144423 · Ophthalmology Physician · Bellaire, TX
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Mayo, MD is a Ophthalmology Physician provider in Bellaire, TX (NPI 1538144423).
Provider details
- NPI number
- 1538144423
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- J0106 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 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
2,053 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) |
|---|---|---|
| Removal of Cataract With Insertion of Prosthetic Lens66984 | 1,008 | $504 |
| Removal of Recurring Cataract in Lens Capsule Using a Laser66821 | 190 | $347 |
| Measurement of Corneal Curvature and Depth of Eye92136 | 146 | $26 |
| Established Patient Complete Exam of Visual System92014 | 135 | $130 |
| Established Patient Problem Focused Exam of Visual System92012 | 110 | $93 |
| Complex Removal of Cataract With Insertion of Prosthetic Lens66982 | 108 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ketorolac Tromethamine | 1,830 | 1,197 |
| Prednisolone Acetate | 1,699 | 1,181 |
| Erythromycin Basebrand: Erythromycin | 106 | 91 |
| Latanoprost | 65 | 28 |
| Ofloxacin | 64 | 56 |
| Bimatoprostbrand: Lumigan | 62 | 19 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 51 | 15 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$524 across 12 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
- 2005-12-13
- Last updated
- 2019-01-30
Frequently asked questions
- What is Mark Mayo's NPI number?
- Mark Mayo's National Provider Identifier (NPI) is 1538144423, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Mayo's specialty?
- Mark Mayo is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Mayo located?
- Mark Mayo's practice location on file with NPPES is 6565 West Loop S, Bellaire, TX 77401-3500.
- What is Mark Mayo's phone number?
- The practice phone number listed in the NPPES registry for Mark Mayo is (713) 797-1010.
- Does Mark Mayo accept Medicare?
- Mark Mayo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Mayo's NPI active?
- Yes — Mark Mayo's NPI (1538144423) is active in the NPPES registry as of the last update on 2019-01-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.