IndividualActive
Stephen Mcmahon, MD
NPI 1265472328 · Pediatrics Physician · Caledonia, MI
Stephen Mcmahon, MD is a Pediatrics Physician provider in Caledonia, MI (NPI 1265472328).
Provider details
- NPI number
- 1265472328
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 4301069699 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(100/100 index)
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
3 documented practice locations
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
7150 Kalamazoo Ave Se Ste a
Caledonia, MI 49316-9197
Phone: (616) 818-7454
Fax: (616) 818-7455
Street-level locationGet directions
Mailing address
7150 Kalamazoo Ave Se Ste a
Caledonia, MI 49316-9197
Additional practice locations (2)
- 1545 68th StSuite 100Grand Rapids, MI 49508Phone: (616) 534-9881
- 4540 Kalamazoo Ave SeGrand Rapids, MI 49508Phone: (616) 818-7454Fax: (616) 818-7455
Registry dates
- Enumerated
- 2006-06-07
- Last updated
- 2022-10-11
- Certified
- 2022-10-11
Frequently asked questions
- What is Stephen Mcmahon's NPI number?
- Stephen Mcmahon's National Provider Identifier (NPI) is 1265472328, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Mcmahon's specialty?
- Stephen Mcmahon is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Mcmahon located?
- Stephen Mcmahon's practice location on file with NPPES is 7150 Kalamazoo Ave Se Ste a, Caledonia, MI 49316-9197.
- What is Stephen Mcmahon's phone number?
- The practice phone number listed in the NPPES registry for Stephen Mcmahon is (616) 818-7454.
- Is Stephen Mcmahon's NPI active?
- Yes — Stephen Mcmahon's NPI (1265472328) is active in the NPPES registry as of the last update on 2022-10-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.