NPPES file of Aug 9, 2026

Gary L. Loy

Maternal & Fetal Medicine Physician · Chicago, IL

Gary L. Loy is a maternal & fetal medicine physician with a practice address in Chicago, Illinois, and NPI 1851404073, issued on Aug 15, 2006. Check the license (Illinois 036065416, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1851404073
Name
Gary L. Loy
Primary taxonomy
Maternal & Fetal Medicine Physician 207VM0101X
License numbers
036065416 IL
01090808A IN
Self-reported in NPPES; status is on the state search
Practice location
5841 S Maryland Ave, Chicago, IL 60637
Phone
(888) 824-0200
Enumerated
Aug 15, 2006
Record last updated
Sep 3, 2025
Medicare enrollment
Enrolled (PECOS I20100603000578); accepts Medicare assignment
Medical or professional school
University Of Chicago, Pritzker School Of Medicine, 1981
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest maternal & fetal medicine physician records → All 128 in Illinois → Look up another NPI →

Also registered at 5841 S Maryland Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Ma. Theresa Abaring, CRNACertified Registered Nurse Anesthetist1962647586
  2. Rouzbeh AbbasgholizadehRetina Specialist (Ophthalmology) Physician1881510030
  3. Jehad Abdalla, MDSleep Medicine (Internal Medicine) Physician1053898684
  4. Sara Abdelaziz, MDEndocrinology, Diabetes & Metabolism Physician1598258089
  5. Noor Abdelrahman, PA-CPhysician Assistant1851012413
  6. Unknown Abdul Hanan, MDBlood Banking & Transfusion Medicine Physician1750022240

Verify Gary L. Loy in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
    Search for license 036065416    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Illinois license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Carle Health Care IncorporatedUrbana, IL

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Gary L. Loy among 128 maternal & fetal medicine physician records in Illinois

Gary L. Loy is one of 128 maternal & fetal medicine physician records with a practice address in Illinois. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.

  • NPI issued2006 · 7% of these records are older, 54% newer
  • In a Medicare fileYes · 84% of these records are
  • In the CMS Doctors and Clinicians fileYes · 76% of these records are
  • Graduated1981 · median 2003 among the 97 with a school on file
  • Record last updated2025 · 40% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207VM0101X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Maternal & Fetal Medicine Physician providers in Illinois

There are 128 maternal & fetal medicine physician records in Illinois.

All 128 in Illinois → Every provider in Chicago → Maternal & Fetal Medicine Physician nationwide →

The 8 maternal & fetal medicine physician records with the nearest ZIP codes

  1. Jacques AbramowiczChicago, IL 606371649254095
  2. Deborah Boyle, MDChicago, IL 606371104857499
  3. Lena Braginsky, M.D.Chicago, IL 606371417213794
  4. Samantha De Los Reyes, M.D.Chicago, IL 606371669883914
  5. Laura Digiovanni, MDChicago, IL 606371578687414
  6. Shakeela FaulknerChicago, IL 606371104357821
  7. Maritza Gonzalez, M.D.Chicago, IL 606371154684728
  8. Bridget Huysman, MDChicago, IL 606371487147948

Common questions

What is Gary L. Loy's NPI number?

Gary L. Loy's National Provider Identifier (NPI) is 1851404073, issued on Aug 15, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Gary L. Loy located?

The NPPES record lists a practice address at 5841 S Maryland Ave, Chicago, IL, 60637. Phone: (888) 824-0200. Providers update this record themselves, so call before visiting.

How can I verify Gary L. Loy's license?

NPPES lists Illinois license number 036065416, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.