DR. MARY HOLLAND PSY.D.
NPI 1548793672
Psychologist in Oakbrook Terrace, IL
About Dr. Mary Holland Psy.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARY HOLLAND PSY.D. (NPI 1548793672) is an individual psychologist in Oakbrook Terrace, Illinois and active in the NPI registry since April 2017. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
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. Mary Holland Psy.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
4Medicare enrollment records show Mary Holland reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Hinsdale, IL 60521
- Reassigned Medicare billing, Illinois enrollment
- 52 clinicians in this Medicare group
Park Ridge, IL 60068
- Reassigned Medicare billing, Illinois enrollment
- 44 clinicians in this Medicare group
Dayton, OH 45459
- Reassigned Medicare billing, Illinois enrollment
- 43 clinicians in this Medicare group
Las Vegas, NV 89144
- Reassigned Medicare billing, Illinois enrollment
- 33 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.
Areas of Expertise CMS Part B claims 6
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Other Providers at the Same Location NPPES
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
OAKBROOK TERRACE, IL 60181
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 Mary Holland's NPI number?
The NPI number for Mary Holland is 1548793672. It was assigned to this individual provider in the NPPES registry on April 5, 2017.
Where is Mary Holland located?
Mary Holland practices at 17w727 Butterfield Rd Ste G, Oakbrook Terrace, IL 60181. The listed phone number is (630) 629-3015.
What is Mary Holland's specialty?
The primary specialty registered for this NPI is Psychologist with taxonomy code 103T00000X.
Is Mary Holland enrolled in Medicare?
Yes. Mary Holland is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Mary Holland's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Holland reassigns Medicare benefits to 4 organizations: Illinois Post-Acute Medical Services 1 PC (Hinsdale, IL), Cs Pacs 3 Il, S.C. (Park Ridge, IL), Cs Pacs 3 Midwest LLC (Dayton, OH) and Nv Pacs 2 LLC (Las Vegas, NV). 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 Mary Holland's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mary Holland accept?
Health plans from Oscar Health list Mary Holland 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 Mary Holland was last updated on April 30, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.