Katy Van Donselaar, D.O.
NPI 1144671983 · Emergency Medicine Physician · Saginaw, MI
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katy Van Donselaar, D.O. is a Emergency Medicine Physician provider in Saginaw, MI (NPI 1144671983).
Provider details
- NPI number
- 1144671983
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Female
- Sole proprietor
- No
- License
- 20A18350 (CA)
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
9 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
947 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 | 397 | $177 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 334 | $8 |
| Critical Care, First 30-74 Minutes99291 | 110 | $217 |
| X-Ray of Chest, 1 View71045 | 57 | $9 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 49 | $122 |
Typical Medicare-allowed amounts for these services range $8–$217 (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 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cephalexin | 51 | 49 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 40 | 39 |
| Ondansetron Hcl | 33 | 33 |
| Ibuprofen | 28 | 27 |
| Famotidine | 27 | 27 |
| Ondansetronbrand: Ondansetron Odt | 27 | 26 |
| Tizanidine Hcl | 23 | 23 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-06-23
- Last updated
- 2025-06-24
- Certified
- 2025-06-24
Frequently asked questions
- What is Katy Van Donselaar's NPI number?
- Katy Van Donselaar's National Provider Identifier (NPI) is 1144671983, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katy Van Donselaar's specialty?
- Katy Van Donselaar is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Katy Van Donselaar located?
- Katy Van Donselaar's practice location on file with NPPES is 1000 Houghton Ave, Saginaw, MI 48602-5303.
- What is Katy Van Donselaar's phone number?
- The practice phone number listed in the NPPES registry for Katy Van Donselaar is (989) 583-6800.
- Does Katy Van Donselaar accept Medicare?
- Katy Van Donselaar is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katy Van Donselaar's NPI active?
- Yes — Katy Van Donselaar's NPI (1144671983) is active in the NPPES registry as of the last update on 2025-06-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.