Quick answers
- Does John L. Mason Jr. accept Medicare assignment?
- Yes. Medicare's clinician data says John L. Mason Jr. accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does John L. Mason Jr. see?
- In 2024, CMS data shows 1,555 Original Medicare patients and 4,084 services for John L. Mason Jr.. This counts Original Medicare only and measures volume, not quality.
- What is John L. Mason Jr.'s NPI number?
- 1568486884. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for John L. Mason Jr., data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 1,555 |
|---|---|
| Services billed to Medicare | 4,084 |
| Different services or procedures | 36 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Established patient complete exam of visual system (92014)1,177 services
- Established patient problem focused exam of visual system (92012)811 services
- Imaging of retina (92134)460 services
- Measurement of corneal curvature and depth of eye (92136)324 services
- Removal of cataract with insertion of prosthetic lens (66984)312 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Arthritis55%
- Diabetes36%
- Ischemic heart disease27%
- Chronic kidney disease26%
Hospitals where John L. Mason Jr. works
Medicare's Facility Affiliation Data lists John L. Mason Jr. at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Anderson Regional Medical CenterMeridian, MS · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 250104
- Ochsner Rush HospitalMeridian, MS · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 250069
- St Dominic-Jackson Memorial HospitalJackson, MS · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 250048
Practice locations
Addresses where John L. Mason Jr. is enrolled with Medicare (CMS data updated October 2, 2026).
- 130 N MulberryButler, AL 36904 (205) 459‑2460
- 1301 20th AveMeridian, MS 39301 (601) 485‑2368
Group practices
Medicare enrollment lists John L. Mason Jr. as a member of this group (CMS data updated October 2, 2026).
- Eye Clinic of Meridian PLLC2 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Alabama
Clinicians with the same Medicare primary specialty in Alabama — not a recommendation.
Other clinicians in Eye Clinic of Meridian PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Mississippi School Of Medicine |
| Graduation year | 1991 (35 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1568486884 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians