Doctor profile · Federal record
Dr. Gertrude Oster, APRN
Nurse Practitioner · Family Nurse Practitioner · Tucson, AZ
- NPI 1265611537
- Accepts Medicare
- 21 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
4511 N Campbell Ave Ste 100
Tucson, AZ 857186424
(520) 529-6500
fax (520) 209-7337 - Mailing address
-
3333 E Camelback RD Ste 180
Phoenix, AZ 850182396
Credentials & registration
- NPI registered
- November 2007 — 19 yrs on file
- Profile last updated
- November 22, 2019
- Year of graduation
- 2005 — 21 yrs since
- Specialty taxonomy
- 363L00000X — NUCC code
- State license (1)
- Arizona #AP2816
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1265611537. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
211
Distinct HCPCS
6
Medicare allowed
$39,137
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 61 | 61 | $106 | |
90961 |
Dialysis services, 2-3 physician visits per month (20 years or older) | 44 | 27 | $241 | |
90960 |
Dialysis services, 4 or more physician visits per month (20 years or older) | 40 | 19 | $290 | |
G0438 |
Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit | 34 | 34 | $120 | |
99496 |
Transitional care management services for problem of high complexity | 17 | 16 | $227 | |
99495 |
Transitional care management services for problem of at least moderate complexity | 15 | 13 | $168 |
In context: peer comparison
Among 37 peers in Tucson Nurse Practitioner, average services per provider: 127. This provider delivers 1.7× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
67
Patients
0
Total drug cost
$2,570
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Calcium Acetate | Generic | 20 | 0 | $1,646 |
| Furosemide | Generic | 18 | 0 | $75 |
| Hydralazine Hcl | Generic | 15 | 0 | $285 |
| Lidocaine-Prilocaine (Lidocaine/Prilocaine) | Brand | 14 | 0 | $564 |
Frequently asked questions
What is Dr. Gertrude Oster's medical specialty?
Dr. Gertrude Oster practices Nurse Practitioner in Tucson, AZ.
Where does Dr. Gertrude Oster practice?
Dr. Gertrude Oster practices at 4511 N Campbell Ave Ste 100, Tucson, AZ 857186424. Office phone: 5205296500.
What is Dr. Gertrude Oster's NPI?
Dr. Gertrude Oster's National Provider Identifier (NPI) is 1265611537, issued by NPPES.
Does Dr. Gertrude Oster accept Medicare assignment?
Yes. Dr. Gertrude Oster accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Gertrude Oster commonly perform?
Top Medicare-reported procedures in 2023: Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (HCPCS G0439); Dialysis services, 2-3 physician visits per month (20 years or older) (HCPCS 90961); Dialysis services, 4 or more physician visits per month (20 years or older) (HCPCS 90960). Source: CMS Medicare Physician & Other Practitioners file.