Christopher Osterbauer, DO
NPI 1427543578 · Internal Medicine Physician · Kalamazoo, MI
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Christopher Osterbauer, DO is a Internal Medicine Physician provider in Kalamazoo, MI (NPI 1427543578).
Provider details
- NPI number
- 1427543578
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 5101023982 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
8 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
485 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 133 | $110 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 131 | $73 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 113 | $161 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 53 | $107 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 42 | $75 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 13 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 27 | 15 |
| Apixabanbrand: Eliquis | 25 | — |
| Pantoprazole Sodium | 16 | — |
| Midodrine Hcl | 15 | — |
| Warfarin Sodium | 15 | 11 |
| Cephalexin | 12 | — |
| Furosemide | 11 | — |
Practice location
Mailing address
Additional practice locations (2)
- 1000 Houghton AveSaginaw, MI 48602-5303Phone: (989) 583-8900
- 1700 W Stout StRice Lake, WI 54868-5000Phone: (715) 236-4450
Registry dates
- Enumerated
- 2018-06-29
- Last updated
- 2025-08-27
- Certified
- 2025-08-27
Frequently asked questions
- What is Christopher Osterbauer's NPI number?
- Christopher Osterbauer's National Provider Identifier (NPI) is 1427543578, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christopher Osterbauer's specialty?
- Christopher Osterbauer is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Christopher Osterbauer located?
- Christopher Osterbauer's practice location on file with NPPES is 601 John St, Kalamazoo, MI 49007-5341.
- What is Christopher Osterbauer's phone number?
- The practice phone number listed in the NPPES registry for Christopher Osterbauer is (269) 341-8481.
- Does Christopher Osterbauer accept Medicare?
- Christopher Osterbauer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Christopher Osterbauer's NPI active?
- Yes — Christopher Osterbauer's NPI (1427543578) is active in the NPPES registry as of the last update on 2025-08-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.