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Edit this profileAt a glance
- 4511 N Campbell Ave Ste 100, Tucson, AZ 85718
About Gertrude Oster
Gertrude A. Oster, APRN is a nurse practitioner based in Tucson, AZ. Gertrude is also listed as specializing in nurse practitioner — family. Medicare claims data shows Gertrude provided 111 services to 67 patients. The services billed most often include dialysis services, 2-3 physician visits per month (20 years or older) and dialysis services, 4 or more physician visits per month (20 years or older). The provider's National Provider Identifier (NPI) is 1265611537.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (520) 529-6500
- Email not available
Practice Locations
4511 N CAMPBELL AVE STE 100
Tucson, AZ 85718
Procedures Most Often Billed to Medicare
111 services · 67 patients · 2 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Dialysis services, 2-3 physician visits per month (20 years or older) | Treatment | 90961 |
56 | More than most peers in Nurse Practitioner |
| Dialysis services, 4 or more physician visits per month (20 years or older) | Treatment | 90960 |
55 | More often than most peers in Nurse Practitioner |
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.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other nurse practitioners in Tucson 8
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
More connections — 13 related providers in 2 groups
Class of 2005 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Dialysis services, 2-3 physician visits per month (20 years or older) 5
Providers in AZ who bill this service to Medicare most often.
Common questions
What does Gertrude A. Oster specialize in?
Gertrude A. Oster is a nurse practitioner in Tucson, AZ. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Gertrude A. Oster located?
Gertrude A. Oster is listed at 4511 N Campbell Ave Ste 100, Tucson, AZ 85718. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Gertrude A. Oster's phone number?
The number on file is (520) 529-6500. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Gertrude A. Oster?
Gertrude A. Oster's National Provider Identifier is 1265611537. 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
Where did Gertrude A. Oster train?
Gertrude A. Oster attended Other, graduating in 2005. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Gertrude A. Oster have?
Gertrude A. Oster has 21 years experience. Calculated from a graduation year of 2005, reported in the CMS National Downloadable File.
CMS public data
What does Gertrude A. Oster do most often?
According to Medicare billing data, Gertrude A. Oster provides treatments such as dialysis services, 2-3 physician visits per month and dialysis services, 4 or more physician visits per month. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Gertrude A. Oster's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Gertrude A. Oster. If this is you, claiming it is free.
Guide.md
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