Nicholas L. Hartog, MD
Listed as an allergist, with 4 practice addresses in Grand Rapids and Kentwood, Michigan.
Practice locations 4
Spectrum Health Primary Care Partners
100 Michigan Ave NE
Grand Rapids, MI 49503Spectrum Health Primary Care Partners
100 Michigan St NE Rm, 280 Corewell Health Medical Group West
Grand Rapids, MI 49503Spectrum Health Primary Care Partners
3271 Clear Vista Ct NE, Corewell Health Medical Group West
Grand Rapids, MI 49525Spectrum Health Primary Care Partners
4444 Kalamazoo Ave SE, 200 Corewell Health Medical Group West
Kentwood, MI 49508
From the records
- Specialty
- Allergist
- Records
- Medicare records: allergy/immunology (October 2026).
- Medicare
- Accepts the Medicare-approved amount as payment in full (Medicare assignment), according to CMS’s file. This applies to Original Medicare; Medicare Advantage plans have their own networks. What assignment means
- Telehealth
- Medicare’s file shows recent telehealth visits. It doesn’t mean every visit can be by video.
- Medical school
- Medical College of Wisconsin, graduated 2011 (Medicare records)
- Registry record
- Last updated March 2021
- NPI
- 1669766325 (national provider registry)
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From CMS’s Doctors and Clinicians file (October 2026) and the national provider registry, NPPES (October 2026). Listings are free and in alphabetical order; we don’t rate or recommend doctors. How we list doctors