Donald Greydanus, M.D.
NPI 1427027382 · Pediatric Adolescent Medicine Physician · Kalamazoo, MI
Donald Greydanus, M.D. is a Pediatric Adolescent Medicine Physician provider in Kalamazoo, MI (NPI 1427027382).
Provider details
- NPI number
- 1427027382
- Entity type
- Individual
- Primary specialty
- Pediatric Adolescent Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 4301055777 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-03-14
- Last updated
- 2007-11-06
Frequently asked questions
- What is Donald Greydanus's NPI number?
- Donald Greydanus's National Provider Identifier (NPI) is 1427027382, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Donald Greydanus's specialty?
- Donald Greydanus is listed in the NPPES registry with a primary specialty of Pediatric Adolescent Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Donald Greydanus located?
- Donald Greydanus's practice location on file with NPPES is 1000 Oakland Dr, Kalamazoo, MI 49008-1282.
- What is Donald Greydanus's phone number?
- The practice phone number listed in the NPPES registry for Donald Greydanus is (269) 337-6400.
- Is Donald Greydanus's NPI active?
- Yes — Donald Greydanus's NPI (1427027382) is active in the NPPES registry as of the last update on 2007-11-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.