Geoffrey Grambau, M.D.
NPI 1144324633 · Pulmonary Disease Physician · Kalamazoo, MI
Enrolled with Medicare as Practitioner - Pulmonary Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Geoffrey Grambau, M.D. is a Pulmonary Disease Physician provider in Kalamazoo, MI (NPI 1144324633).
Provider details
- NPI number
- 1144324633
- Entity type
- Individual
- Primary specialty
- Pulmonary Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- GG035172 (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
19 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
- 2006-09-12
- Last updated
- 2023-11-27
- Certified
- 2020-10-09
Frequently asked questions
- What is Geoffrey Grambau's NPI number?
- Geoffrey Grambau's National Provider Identifier (NPI) is 1144324633, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Geoffrey Grambau's specialty?
- Geoffrey Grambau is listed in the NPPES registry with a primary specialty of Pulmonary Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Geoffrey Grambau located?
- Geoffrey Grambau's practice location on file with NPPES is 601 John St, Kalamazoo, MI 49007-5342.
- What is Geoffrey Grambau's phone number?
- The practice phone number listed in the NPPES registry for Geoffrey Grambau is (269) 388-5864.
- Does Geoffrey Grambau accept Medicare?
- Geoffrey Grambau is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Geoffrey Grambau's NPI active?
- Yes — Geoffrey Grambau's NPI (1144324633) is active in the NPPES registry as of the last update on 2023-11-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.