Brett Barkimer, M.D.
NPI 1255540134 · Internal Medicine Physician · Menomonee Falls, WI
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Brett Barkimer, M.D. is a Internal Medicine Physician provider in Menomonee Falls, WI (NPI 1255540134).
Provider details
- NPI number
- 1255540134
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 51103 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
190 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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 does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 82 | $118 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 63 | $125 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 33 | $84 |
| Administration of Influenza Virus VaccineG0008 | 12 | $14 |
Typical Medicare-allowed amounts for these services range $14–$125 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 88 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 432 | 134 |
| Amlodipine Besylate | 237 | 70 |
| Lisinopril | 182 | 57 |
| Losartan Potassium | 178 | 52 |
| Metformin Hclbrand: Metformin Hcl Er | 147 | 37 |
| Levothyroxine Sodium | 142 | 43 |
Practice location
Mailing address
Additional practice locations (1)
- 9200 W Wisconsin AveMilwaukee, WI 53226-3522Phone: (414) 805-6850Fax: (414) 805-6864
Registry dates
- Enumerated
- 2007-05-21
- Last updated
- 2022-11-25
- Certified
- 2022-11-21
Frequently asked questions
- What is Brett Barkimer's NPI number?
- Brett Barkimer's National Provider Identifier (NPI) is 1255540134, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Brett Barkimer's specialty?
- Brett Barkimer is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Brett Barkimer located?
- Brett Barkimer's practice location on file with NPPES is W129n7055 Northfield Dr, Menomonee Falls, WI 53051-0537.
- What is Brett Barkimer's phone number?
- The practice phone number listed in the NPPES registry for Brett Barkimer is (262) 253-2510.
- Does Brett Barkimer accept Medicare?
- Brett Barkimer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Brett Barkimer's NPI active?
- Yes — Brett Barkimer's NPI (1255540134) is active in the NPPES registry as of the last update on 2022-11-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.