Marshall Hamill, M.D.
NPI 1972592384 · Ophthalmology Physician · Houston, TX
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marshall Hamill, M.D. is a Ophthalmology Physician provider in Houston, TX (NPI 1972592384).
Provider details
- NPI number
- 1972592384
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- F4041 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
886 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 | 266 | $126 |
| Established Patient Problem Focused Exam of Visual System92012 | 228 | $89 |
| Measurement of Corneal Curvature and Depth of Eye92136 | 144 | $37 |
| Removal of Cataract With Insertion of Prosthetic Lens66984 | 76 | $516 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 64 | $170 |
| New Patient Complete Exam of Visual System92004 | 29 | $151 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Fluorometholone | 368 | 120 |
| Difluprednate | 123 | 74 |
| Moxifloxacin Hclbrand: Moxifloxacin | 98 | 63 |
| Polymyxin B Sulf/Trimethoprimbrand: Polymyxin B Sul-Trimethoprim | 93 | 87 |
| Prednisolone Acetate | 41 | 28 |
| Prednisolone Acetatebrand: Pred Mild | 31 | 12 |
| Bromfenac Sodium | 29 | 23 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-10-18
- Last updated
- 2008-02-01
Frequently asked questions
- What is Marshall Hamill's NPI number?
- Marshall Hamill's National Provider Identifier (NPI) is 1972592384, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marshall Hamill's specialty?
- Marshall Hamill is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Marshall Hamill located?
- Marshall Hamill's practice location on file with NPPES is 6550 Fannin St, Houston, TX 77030-2717.
- What is Marshall Hamill's phone number?
- The practice phone number listed in the NPPES registry for Marshall Hamill is (713) 798-6100.
- Does Marshall Hamill accept Medicare?
- Marshall Hamill is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marshall Hamill's NPI active?
- Yes — Marshall Hamill's NPI (1972592384) is active in the NPPES registry as of the last update on 2008-02-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.