James Saker, M.D.
NPI 1689645103 · Clinical & Laboratory Immunology (Allergy & Immunology) Physician · Lansing, MI
James Saker, M.D. is a Clinical & Laboratory Immunology (Allergy & Immunology) Physician provider in Lansing, MI (NPI 1689645103).
Provider details
- NPI number
- 1689645103
- Entity type
- Individual
- Primary specialty
- Clinical & Laboratory Immunology (Allergy & Immunology) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- License
- JS022073 (MI)
Specialties & taxonomies
- Clinical & Laboratory Immunology (Allergy & Immunology) PhysicianPrimary207KI0005XLicense JS022073 (MI)
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
- 2006-02-01
- Last updated
- 2007-07-08
Frequently asked questions
- What is James Saker's NPI number?
- James Saker's National Provider Identifier (NPI) is 1689645103, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Saker's specialty?
- James Saker is listed in the NPPES registry with a primary specialty of Clinical & Laboratory Immunology (Allergy & Immunology) Physician (Allopathic & Osteopathic Physicians).
- Where is James Saker located?
- James Saker's practice location on file with NPPES is 4169 Legacy Pkwy, Lansing, MI 48911-4258.
- What is James Saker's phone number?
- The practice phone number listed in the NPPES registry for James Saker is (517) 394-6500.
- Is James Saker's NPI active?
- Yes — James Saker's NPI (1689645103) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.