Quick answers
- Does Gretchen L. Trenary accept Medicare assignment?
- Yes. Medicare's clinician data says Gretchen L. Trenary 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 Gretchen L. Trenary see?
- In 2024, CMS data shows 224 Original Medicare patients and 16,442 services for Gretchen L. Trenary. This counts Original Medicare only and measures volume, not quality.
- What is Gretchen L. Trenary's NPI number?
- 1811552748. 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 Gretchen L. Trenary, 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 | 224 |
|---|---|
| Services billed to Medicare | 16,442 |
| Different services or procedures | 68 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Injection, dexamethasone sodium phosphate, 1 mg (J1100)285 services
- Injection, palonosetron hcl, 25 mcg (J2469)230 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)132 services
- Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (85025)128 services
- Insertion of needle into vein for collection of blood sample (36415)119 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%
- Arthritis58%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)42%
- Chronic kidney disease39%
- Diabetes38%
Practice locations
Addresses where Gretchen L. Trenary is enrolled with Medicare (CMS data updated October 2, 2026).
- 1000 Towne Ctr Blvd, Suite 704Pooler, GA 31322 (912) 692‑2000
- 4700 Waters Ave, Suite 201Savannah, GA 31404 (912) 692‑2000
Group practices
Medicare enrollment lists Gretchen L. Trenary as a member of this group (CMS data updated October 2, 2026).
- American Oncology Partners PA391 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Pooler
Clinicians with the same Medicare primary specialty in Pooler, GA — not a recommendation.
Other clinicians in American Oncology Partners PA
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2018 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1811552748 |
| 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
- 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