Karl Brenner, M.D.
NPI 1033186770 · Internal Medicine Physician · Ann Arbor, MI
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karl Brenner, M.D. is a Internal Medicine Physician provider in Ann Arbor, MI (NPI 1033186770).
Provider details
- NPI number
- 1033186770
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- License
- 4301067854 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
694 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 | 292 | $86 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 199 | $70 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 118 | $27 |
| Hemoglobin A1c Level83036 | 42 | $9 |
| Administration of Influenza Virus VaccineG0008 | 30 | $33 |
| Admn Sarscov2 Vacc 1 Dose90480 | 13 | $44 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 134 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 686 | 183 |
| Levothyroxine Sodium | 420 | 104 |
| Lisinopril | 414 | 109 |
| Amlodipine Besylate | 391 | 109 |
| Tamsulosin Hcl | 313 | 81 |
| Metoprolol Succinate | 297 | 80 |
| Simvastatin |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-03-01
- Last updated
- 2007-07-08
Frequently asked questions
- What is Karl Brenner's NPI number?
- Karl Brenner's National Provider Identifier (NPI) is 1033186770, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karl Brenner's specialty?
- Karl Brenner is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Karl Brenner located?
- Karl Brenner's practice location on file with NPPES is 2090 Commonwealth Blvd, Ann Arbor, MI 48105-1580.
- What is Karl Brenner's phone number?
- The practice phone number listed in the NPPES registry for Karl Brenner is (734) 995-0303.
- Does Karl Brenner accept Medicare?
- Karl Brenner is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karl Brenner's NPI active?
- Yes — Karl Brenner's NPI (1033186770) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.