Leroy Marmion, MD
NPI 1548207947 · Sleep Medicine (Psychiatry & Neurology) Physician · Grand Rapids, MI
Leroy Marmion, MD is a Sleep Medicine (Psychiatry & Neurology) Physician provider in Grand Rapids, MI (NPI 1548207947).
Provider details
- NPI number
- 1548207947
- Entity type
- Individual
- Primary specialty
- Sleep Medicine (Psychiatry & Neurology) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 4301037442 (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
- 2006-06-02
- Last updated
- 2021-02-26
- Certified
- 2021-02-26
Frequently asked questions
- What is Leroy Marmion's NPI number?
- Leroy Marmion's National Provider Identifier (NPI) is 1548207947, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leroy Marmion's specialty?
- Leroy Marmion is listed in the NPPES registry with a primary specialty of Sleep Medicine (Psychiatry & Neurology) Physician (Allopathic & Osteopathic Physicians).
- Where is Leroy Marmion located?
- Leroy Marmion's practice location on file with NPPES is 4100 Lake Dr Se Ste 200, Grand Rapids, MI 49546-8292.
- What is Leroy Marmion's phone number?
- The practice phone number listed in the NPPES registry for Leroy Marmion is (616) 391-3759.
- Is Leroy Marmion's NPI active?
- Yes — Leroy Marmion's NPI (1548207947) is active in the NPPES registry as of the last update on 2021-02-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.