Gary Loy
NPI 1851404073 · Maternal & Fetal Medicine Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gary Loy is a Maternal & Fetal Medicine Physician provider in Chicago, IL (NPI 1851404073).
Provider details
- NPI number
- 1851404073
- Entity type
- Individual
- Primary specialty
- Maternal & Fetal Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- 036065416 (IL)
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
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 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
Mailing address
Additional practice locations (1)
- 8081 Township Line Rd Ste 203Indianapolis, IN 46260-2189Phone: (317) 415-8100Fax: (317) 415-7942
Registry dates
- Enumerated
- 2006-08-15
- Last updated
- 2025-09-03
- Certified
- 2025-09-03
Frequently asked questions
- What is Gary Loy's NPI number?
- Gary Loy's National Provider Identifier (NPI) is 1851404073, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gary Loy's specialty?
- Gary Loy is listed in the NPPES registry with a primary specialty of Maternal & Fetal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gary Loy located?
- Gary Loy's practice location on file with NPPES is 5841 S Maryland Ave, Chicago, IL 60637-1443.
- What is Gary Loy's phone number?
- The practice phone number listed in the NPPES registry for Gary Loy is (888) 824-0200.
- Does Gary Loy accept Medicare?
- Gary Loy is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gary Loy's NPI active?
- Yes — Gary Loy's NPI (1851404073) is active in the NPPES registry as of the last update on 2025-09-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.