CHRISTINE CELESTE BRENNAN MD
NPI 1629657473
Internal Medicine - Sleep Medicine in Redwood City, CA
About Christine Celeste Brennan Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CHRISTINE CELESTE BRENNAN MD (NPI 1629657473) is an individual sleep medicine provider in Redwood City, California, licensed in California (A195905) and active in the NPI registry since April 2021. She is enrolled in Medicare PECOS, is affiliated with University Of Utah Hospitals And Clinics, and is a graduate of University Of Toledo College Of Medicine (2021).
NPPES Registry Identity
Specialties & Licenses 2
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
Christine Celeste Brennan Md 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 Christine Brennan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Salt Lake City, UT 84132
- Reassigned Medicare billing, Utah enrollment
- 2,620 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
University Of Utah Hospitals And Clinics
Acute Care Hospitals · Salt Lake City, UTPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94063 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 2
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
REDWOOD CITY, CA 94063
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 Christine Brennan's NPI number?
The NPI number for Christine Brennan is 1629657473. It was assigned to this individual provider in the NPPES registry on April 7, 2021.
Where is Christine Brennan located?
Christine Brennan practices at 450 Broadway St Fl 2, Redwood City, CA 94063. The listed phone number is (507) 236-6016.
What is Christine Brennan's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Sleep Medicine, with taxonomy code 207RS0012X.
Is Christine Brennan enrolled in Medicare?
Yes. Christine Brennan 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 Christine Brennan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Christine Brennan reassigns Medicare benefits to University Of Utah Adult Services (Salt Lake City, UT). 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 Christine Brennan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Christine Brennan accept?
Health plans from BridgeSpan Health Company, Molina Healthcare, Regence BlueCross BlueShield of Utah and University of Utah Health Plans list Christine Brennan 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 Christine Brennan affiliated with any hospitals?
According to CMS data, Christine Brennan is affiliated with University Of Utah Hospitals And Clinics.
When was this NPI record last updated?
The NPPES record for Christine Brennan was last updated on March 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Christine Celeste Brennan, MD · NPI 1629657473
Sleep Medicine physician in Redwood City, California. Individual provider, active in the CMS NPPES registry since April 7, 2021.
## Identity
- **NPI:** 1629657473 (Entity type: Individual)
- **Enumerated:** April 7, 2021
- **Primary specialty:** Internal Medicine - Sleep Medicine · taxonomy 207RS0012X
- **State license:** A195905 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 450 BROADWAY ST FL 2, Redwood City, CA 94063-3132
- **Phone:** (507) 236-6016
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** University Of Utah Adult Services (NPI 1578967345, Salt Lake City, UT), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Toledo College Of Medicine, class of 2021
## Record status
- **NPPES last updated:** March 11, 2026
---
Source: [NPI Profile](https://npiprofile.com/npi/1629657473) · Data from the CMS NPPES public registry.