Robert Wierenga, MD
NPI 1881856888 · Emergency Medicine Physician · Kalamazoo, MI
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Wierenga, MD is a Emergency Medicine Physician provider in Kalamazoo, MI (NPI 1881856888).
Provider details
- NPI number
- 1881856888
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 4301092580 (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
17 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
13 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) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 13 | $160 |
Typical Medicare-allowed amounts for these services range $160–$160 (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.
Practice location
Mailing address
Additional practice locations (1)
- 13000 E 136th StFishers, IN 46037-9478Phone: (317) 678-2273Fax: (317) 678-1325
Registry dates
- Enumerated
- 2008-06-30
- Last updated
- 2021-03-11
- Certified
- 2021-03-11
Frequently asked questions
- What is Robert Wierenga's NPI number?
- Robert Wierenga's National Provider Identifier (NPI) is 1881856888, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Wierenga's specialty?
- Robert Wierenga is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Wierenga located?
- Robert Wierenga's practice location on file with NPPES is 125 S Kalamazoo Mall Ste 204, Kalamazoo, MI 49007-4869.
- What is Robert Wierenga's phone number?
- The practice phone number listed in the NPPES registry for Robert Wierenga is (269) 343-3900.
- Does Robert Wierenga accept Medicare?
- Robert Wierenga is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Wierenga's NPI active?
- Yes — Robert Wierenga's NPI (1881856888) is active in the NPPES registry as of the last update on 2021-03-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.