MS. SUSAN G O'BRIEN WHNP
NPI 1225388176
Nurse Practitioner - Women's Health in Phoenix, AZ
About Ms. Susan G O'brien Whnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. SUSAN G O'BRIEN WHNP (NPI 1225388176) is an individual women's health provider in Phoenix, Arizona, licensed in Arizona (341302) and active in the NPI registry since September 2012. She is enrolled in Medicare PECOS, is affiliated with Adventist Hinsdale Hospital, and maintains a secondary practice location in Phoenix.
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 and accepts Medicare assignment
Ms. Susan G O'brien Whnp is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Susan O'brien reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Plainfield, IL 60544
- Reassigned Medicare billing, Illinois enrollment
- 381 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 3
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.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Adventist Hinsdale Hospital
Acute Care Hospitals · Hinsdale, ILAdvocate Good Samaritan Hospital
Acute Care Hospitals · Downers Grove, ILUchicago Medicine Adventhealth Bolingbrook
Acute Care Hospitals · Bolingbrook, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 85028 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 10
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
PHOENIX, AZ 85028
PHOENIX, AZ 85028
PHOENIX, AZ 85028
PHOENIX, AZ 85028
PHOENIX, AZ 85028
PHOENIX, AZ 85028
PHOENIX, AZ 85028
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 Susan O'brien's NPI number?
The NPI number for Susan O'brien is 1225388176. It was assigned to this individual provider in the NPPES registry on September 18, 2012.
Where is Susan O'brien located?
Susan O'brien practices at 11209 N Tatum Blvd Ste 255, Phoenix, AZ 85028. The listed phone number is (602) 494-5050.
What is Susan O'brien's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Women's Health, with taxonomy code 363LW0102X.
Is Susan O'brien enrolled in Medicare?
Yes. Susan O'brien is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Susan O'brien's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Susan O'brien reassigns Medicare benefits to Adventist Health Partners, Inc (Plainfield, IL). The 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 Susan O'brien's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Susan O'brien accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Arizona Complete Health and Oscar Health list Susan O'brien 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.
Is Susan O'brien affiliated with any hospitals?
According to CMS data, Susan O'brien is affiliated with Adventist Hinsdale Hospital, Advocate Good Samaritan Hospital and Uchicago Medicine Adventhealth Bolingbrook.
When was this NPI record last updated?
The NPPES record for Susan O'brien was last updated on August 31, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.