DR. GREGG JOSEPH MONTALTO M.D.
NPI 1710073416
Pediatrics - Adolescent Medicine in Chicago, IL
About Dr. Gregg Joseph Montalto M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. GREGG JOSEPH MONTALTO M.D. (NPI 1710073416) is an individual adolescent medicine provider in Chicago, Illinois, licensed in Illinois (036.147444) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS and maintains a secondary practice location in Bethesda.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Gregg Joseph Montalto M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Gregg Montalto reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Chicago, IL 60637
- Reassigned Medicare billing, Illinois enrollment
- 1,905 clinicians in this Medicare group
Chicago, IL 60637
- Reassigned Medicare billing, Illinois enrollment
- 132 clinicians in this Medicare group
Chicago, IL 60611
- Reassigned Medicare billing, Illinois enrollment
- 826 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CHICAGO, IL 60637
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Gregg Montalto's NPI number?
The NPI number for Gregg Montalto is 1710073416. It was assigned to this individual provider in the NPPES registry on October 4, 2006.
Where is Gregg Montalto located?
Gregg Montalto practices at 5841 S Maryland Ave, Chicago, IL 60637. The listed phone number is (773) 702-7506.
What is Gregg Montalto's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Adolescent Medicine, with taxonomy code 2080A0000X.
Is Gregg Montalto enrolled in Medicare?
Yes. Gregg Montalto is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Gregg Montalto's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gregg Montalto reassigns Medicare benefits to 3 organizations: The University Of Chicago Medical Center (Chicago, IL), Friend Family Health Center, Inc (Chicago, IL) and Lurie Children's Medical Group Inc (Chicago, IL). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Gregg Montalto's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Gregg Montalto was last updated on January 3, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Gregg Joseph Montalto, M.D. · NPI 1710073416
Adolescent Medicine physician in Chicago, Illinois. Individual provider, active in the CMS NPPES registry since October 4, 2006.
## Identity
- **NPI:** 1710073416 (Entity type: Individual)
- **Enumerated:** October 4, 2006
- **Primary specialty:** Pediatrics - Adolescent Medicine · taxonomy 2080A0000X
- **State license:** 036.147444 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 5841 S MARYLAND AVE, Chicago, IL 60637
- **Phone:** (773) 702-7506
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): The University Of Chicago Medical Center (NPI 1033218128, Chicago, IL); Friend Family Health Center, Inc (NPI 1740635663, Chicago, IL); Lurie Children's Medical Group Inc (NPI 1518064716, Chicago, IL) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** January 3, 2019
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Source: [NPI Profile](https://npiprofile.com/npi/1710073416) · Data from the CMS NPPES public registry.