Physician Profile
Unclaimed ProfileAbout MARSHALL
John Marshall, O.D. practices optometry in Big Spring, TX. John is a 1979 graduate of University of Houston - College of Optometry. John is also listed as specializing in optometrist. According to Medicare claims data, John cared for 289 Medicare patients across 315 services.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (432) 263-2501
- Email not available
Practice Locations
2311 SCURRY ST
Big Spring, TX 79720
Procedures Most Often Billed to Medicare
315 services · 289 patients · 6 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Removal of cataract with insertion of prosthetic lens | Procedure | 66984 |
15 |
| Established patient complete exam of visual system | Treatment | 92014 |
123 |
| Established patient problem focused exam of visual system | Treatment | 92012 |
68 |
| New patient complete exam of visual system | Treatment | 92004 |
23 |
| Exam of visual field with extended testing | Treatment | 92083 |
12 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
74 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other optometry specialists at this location 2
Same specialty, same street address — most likely the same department or group.
Also at this address 2
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Trained at University of Houston - College of Optometry 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1979 at University of Houston - College of Optometry 8
Providers who graduated from the same medical school in the same year.
Also performs Removal of cataract with insertion of prosthetic lens 8
Providers in TX who bill this service to Medicare most often.
Common questions
What is Dr. Marshall's specialty?
Dr. Marshall is an optometry in Big Spring, TX. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “OPTOMETRY”.
NPI registry
Where can I find Dr. Marshall?
Dr. Marshall is listed at 2311 SCURRY ST, Big Spring, TX 79720. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Marshall?
The number on file is (432) 263-2501. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Marshall's NPI number?
Dr. Marshall's National Provider Identifier is 1295754000. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Dr. Marshall's medical education?
Dr. Marshall attended University of Houston - College of Optometry, graduating in 1979. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Marshall been practicing?
Dr. Marshall has 47 years experience. Calculated from a graduation year of 1979, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Marshall known for?
According to Medicare billing data, Dr. Marshall performs procedures including removal of cataract with insertion of prosthetic lens; provides treatments such as established patient complete exam of visual system and established patient problem focused exam of visual system, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Marshall confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Marshall. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.