Joanne Timmerman, PA-C
NPI 1275795940 · Physician Assistant · Summit, WI
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joanne Timmerman, PA-C is a Physician Assistant provider in Summit, WI (NPI 1275795940).
Provider details
- NPI number
- 1275795940
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- 2263 (WI)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 1 distinct drug on file.
| Drug | Part D claims (2024) |
|---|---|
| Tamsulosin Hcl | 26 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (1)
- 1504 Madison AveFort Atkinson, WI 53538-3100Phone: (920) 563-7888Fax: (920) 563-7741
Registry dates
- Enumerated
- 2008-06-25
- Last updated
- 2024-07-24
- Certified
- 2024-07-24
Frequently asked questions
- What is Joanne Timmerman's NPI number?
- Joanne Timmerman's National Provider Identifier (NPI) is 1275795940, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joanne Timmerman's specialty?
- Joanne Timmerman is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Joanne Timmerman located?
- Joanne Timmerman's practice location on file with NPPES is 36500 Aurora Dr, Summit, WI 53066-4899.
- What is Joanne Timmerman's phone number?
- The practice phone number listed in the NPPES registry for Joanne Timmerman is (262) 434-5029.
- Does Joanne Timmerman accept Medicare?
- Joanne Timmerman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joanne Timmerman's NPI active?
- Yes — Joanne Timmerman's NPI (1275795940) is active in the NPPES registry as of the last update on 2024-07-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.