Gary Marsiglia, D.O.
NPI 1487618666 · Family Medicine Physician · Grand Rapids, MI
Gary Marsiglia, D.O. is a Family Medicine Physician provider in Grand Rapids, MI (NPI 1487618666).
Provider details
- NPI number
- 1487618666
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 5101007137 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
- 2006-04-14
- Last updated
- 2017-12-05
Frequently asked questions
- What is Gary Marsiglia's NPI number?
- Gary Marsiglia's National Provider Identifier (NPI) is 1487618666, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gary Marsiglia's specialty?
- Gary Marsiglia is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gary Marsiglia located?
- Gary Marsiglia's practice location on file with NPPES is 1471 Grace St Se, Grand Rapids, MI 49506-1678.
- What is Gary Marsiglia's phone number?
- The practice phone number listed in the NPPES registry for Gary Marsiglia is (616) 913-2011.
- Is Gary Marsiglia's NPI active?
- Yes — Gary Marsiglia's NPI (1487618666) is active in the NPPES registry as of the last update on 2017-12-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.