DR. ALEXANDRIA HOLLIDAY M.D.
NPI 1285028886
Pediatrics - Adolescent Medicine in Maywood, IL
About Dr. Alexandria Holliday M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ALEXANDRIA HOLLIDAY M.D. (NPI 1285028886) is an individual adolescent medicine provider in Maywood, Illinois, licensed in Illinois (036157301) and active in the NPI registry since March 2015. She is enrolled in Medicare PECOS and maintains a secondary practice location in Milwaukee.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Alexandria Holliday M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Alexandria Holliday reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Maywood, IL 60153
- Reassigned Medicare billing, Illinois enrollment
- 1,138 clinicians in this Medicare group
Oak Brook, IL 60523
- Reassigned Medicare billing, Illinois enrollment
- 4,870 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.
MAYWOOD, IL 60153
MAYWOOD, IL 60153
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 Alexandria Holliday's NPI number?
The NPI number for Alexandria Holliday is 1285028886. It was assigned to this individual provider in the NPPES registry on March 23, 2015.
Where is Alexandria Holliday located?
Alexandria Holliday practices at 2160 S 1st Ave, Maywood, IL 60153. The listed phone number is (708) 216-9000.
What is Alexandria Holliday's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Adolescent Medicine, with taxonomy code 2080A0000X.
Is Alexandria Holliday enrolled in Medicare?
Yes. Alexandria Holliday is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Alexandria Holliday's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Alexandria Holliday reassigns Medicare benefits to 2 organizations: Loyola University Medical Center (Maywood, IL) and Advocate Health And Hospitals Corporation (Oak Brook, 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 Alexandria Holliday's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Alexandria Holliday accept?
Health plans from Oscar Health list Alexandria Holliday as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Alexandria Holliday was last updated on October 18, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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. Alexandria Holliday, M.D. · NPI 1285028886
Adolescent Medicine physician in Maywood, Illinois. Individual provider, active in the CMS NPPES registry since March 23, 2015.
## Identity
- **NPI:** 1285028886 (Entity type: Individual)
- **Enumerated:** March 23, 2015
- **Primary specialty:** Pediatrics - Adolescent Medicine · taxonomy 2080A0000X
- **State license:** 036157301 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 2160 S 1ST AVE, Maywood, IL 60153-3328
- **Phone:** (708) 216-9000
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Loyola University Medical Center (NPI 1336159961, Maywood, IL); Advocate Health And Hospitals Corporation (NPI 1700824455, Oak Brook, IL) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 18, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1285028886) · Data from the CMS NPPES public registry.