Haley Zimmer, M.D.
NPI 1932580883 · Internal Medicine Physician · Grand Rapids, MI
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Haley Zimmer, M.D. is a Internal Medicine Physician provider in Grand Rapids, MI (NPI 1932580883).
Provider details
- NPI number
- 1932580883
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 4301107547 (MI)
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
11 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
44 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 | 28 | $123 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 16 | $124 |
Typical Medicare-allowed amounts for these services range $123–$124 (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 · 45 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Lisinopril | 91 | 22 |
| Atorvastatin Calcium | 83 | 28 |
| Amlodipine Besylate | 78 | 19 |
| Hydrochlorothiazide | 63 | 20 |
| Omeprazole | 61 | 17 |
| Levothyroxine Sodium | 58 | 22 |
| Metformin Hcl | 52 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-06-17
- Last updated
- 2019-10-29
Frequently asked questions
- What is Haley Zimmer's NPI number?
- Haley Zimmer's National Provider Identifier (NPI) is 1932580883, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Haley Zimmer's specialty?
- Haley Zimmer is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Haley Zimmer located?
- Haley Zimmer's practice location on file with NPPES is 25 Michigan St Ne, Grand Rapids, MI 49503-2515.
- What is Haley Zimmer's phone number?
- The practice phone number listed in the NPPES registry for Haley Zimmer is (616) 391-3777.
- Does Haley Zimmer accept Medicare?
- Haley Zimmer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Haley Zimmer's NPI active?
- Yes — Haley Zimmer's NPI (1932580883) is active in the NPPES registry as of the last update on 2019-10-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.