Quick answers
- Does Gregg O. Anazia accept Medicare assignment?
- Yes. Medicare's clinician data says Gregg O. Anazia 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 Gregg O. Anazia see?
- In 2024, CMS data shows 549 Original Medicare patients and 1,612 services for Gregg O. Anazia. This counts Original Medicare only and measures volume, not quality.
- What is Gregg O. Anazia's NPI number?
- 1497045512. 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 Gregg O. Anazia, 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 | 549 |
|---|---|
| Services billed to Medicare | 1,612 |
| Different services or procedures | 15 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)862 services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)240 services
- Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)192 services
- Hospital discharge day management, more than 30 minutes (99239)168 services
- Hospital discharge day management, 30 minutes or less (99238)78 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%
- Arthritis66%
- Diabetes58%
- Ischemic heart disease58%
- Chronic kidney disease58%
Hospitals where Gregg O. Anazia works
Medicare's Facility Affiliation Data lists Gregg O. Anazia 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.
- Forrest General HospitalHattiesburg, MS · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 250078
- Prisma Health Tuomey HospitalSumter, SC · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 420070
- South Central Regional Medical CenterLaurel, MS · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 250058
Practice locations
Addresses where Gregg O. Anazia is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 8; the Medicare profile lists all.
- 129 N Washington StSumter, SC 29150 (803) 774‑9680
- 2809 Denny AvePascagoula, MS 39581 (228) 818‑0563
- 3109 Bienville BlvdOcean Springs, MS 39564 (228) 818‑1111
- 415 S 28th AveHattiesburg, MS 39401
- 415 S 28th Ave 3rd Floor, Ambulatory Cardiovascular Center of MississHattiesburg, MS 39401 (601) 268‑1734
Group practices
Medicare enrollment lists Gregg O. Anazia as a member of these groups (CMS data updated October 2, 2026).
- Prisma Health Medical Group-Midlands1,068 clinicians in the group
- Hattiesburg Clinic PA537 clinicians in the group
- Singing River Health System295 clinicians in the group
Specialties
- Hospitalistprimary
Other hospitalists in Sumter
Clinicians with the same Medicare primary specialty in Sumter, SC — not a recommendation.
Other clinicians in Prisma Health Medical Group-Midlands
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Creighton University School Of Medicine |
| Graduation year | 2011 (15 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1497045512 |
| 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