Michael Unruh, M.D.
NPI 1104036532 · Nephrology Physician · Grand Rapids, MI
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Unruh, M.D. is a Nephrology Physician provider in Grand Rapids, MI (NPI 1104036532).
Provider details
- NPI number
- 1104036532
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 4301097953 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,200 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Dialysis Services, 4 Or More Physician Visits Per Month (20 Years Or Older)90960 | 192 | $336 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 135 | $46 |
| Use of a Drug to Induce Depression of Consciousness By Physician Performing a Procedure (5 Years Or Older), Initial 15 Minutes99152 | 112 | $45 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 99 | $16 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 97 | $72 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 29 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Calcitriol | 233 | 75 |
| Empagliflozinbrand: Jardiance | 154 | 37 |
| Amlodipine Besylate | 121 | 40 |
| Lisinopril | 113 | 35 |
| Losartan Potassium | 65 | 24 |
| Torsemide | 64 | 23 |
| Furosemide | 63 | 18 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$83 across 4 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-05-23
- Last updated
- 2020-01-17
- Certified
- 2020-01-17
Frequently asked questions
- What is Michael Unruh's NPI number?
- Michael Unruh's National Provider Identifier (NPI) is 1104036532, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Unruh's specialty?
- Michael Unruh is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Unruh located?
- Michael Unruh's practice location on file with NPPES is 330 E Beltline Ave Ne, Grand Rapids, MI 49506-1267.
- What is Michael Unruh's phone number?
- The practice phone number listed in the NPPES registry for Michael Unruh is (616) 752-6235.
- Does Michael Unruh accept Medicare?
- Michael Unruh is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Unruh's NPI active?
- Yes — Michael Unruh's NPI (1104036532) is active in the NPPES registry as of the last update on 2020-01-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.