PATRICK R RYAN MD
NPI 1760638118
Radiology - Diagnostic Radiology in Walnut Creek, CA
About Patrick R Ryan Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
PATRICK R RYAN MD (NPI 1760638118) is an individual diagnostic radiology provider in Walnut Creek, California, licensed in California (A109977) and active in the NPI registry since August 2008. He is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of University Of California, Geffen School Of Medicine (2008).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Patrick R Ryan Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
11Medicare enrollment records show Patrick Ryan reassigns Medicare billing to 11 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Walnut Creek, CA 94598
- Reassigned Medicare billing, California and Hawaii enrollments
- 181 clinicians in this Medicare group
Walnut Creek, CA 94598
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Bass Medical Group
- 347 clinicians in this Medicare group
Walnut Creek, CA 94598
- Reassigned Medicare billing, California enrollment
- 60 clinicians in this Medicare group
Walnut Creek, CA 94598
- Reassigned Medicare billing, California and Hawaii enrollments
- 129 clinicians in this Medicare group
Walnut Creek, CA 94598
- Reassigned Medicare billing, California enrollment
- 810 clinicians in this Medicare group
Antioch, CA 94531
- Reassigned Medicare billing, California enrollment
- 86 clinicians in this Medicare group
Oakland, CA 94609
- Reassigned Medicare billing, California and Hawaii enrollments
- 158 clinicians in this Medicare group
Fairfield, CA 94534
- Reassigned Medicare billing, California enrollment
- 88 clinicians in this Medicare group
Palo Alto, CA 94306
- Reassigned Medicare billing, California enrollment
- 2,460 clinicians in this Medicare group
Kamuela, HI 96743
- Reassigned Medicare billing, California enrollment
- 47 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 142
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94598 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Reported Quality Measures
Other Providers at the Same Location NPPES 14
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WALNUT CREEK, CA 94598
WALNUT CREEK, CA 94598
WALNUT CREEK, CA 94598
WALNUT CREEK, CA 94598
WALNUT CREEK, CA 94598
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 Patrick Ryan's NPI number?
The NPI number for Patrick Ryan is 1760638118. It was assigned to this individual provider in the NPPES registry on August 15, 2008.
Where is Patrick Ryan located?
Patrick Ryan practices at 2125 Oak Grove Rd Ste 200, Walnut Creek, CA 94598. The listed phone number is (310) 619-5106.
What is Patrick Ryan's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.
Is Patrick Ryan enrolled in Medicare?
Yes. Patrick Ryan is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Patrick Ryan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Patrick Ryan reassigns Medicare benefits to 11 organizations: Bay Imaging Consultants Medical Group Inc (Walnut Creek, CA), Bay Area Surgical Specialists Inc A Medical Corporation (Walnut Creek, CA), Michael P Sherman MD Phd, A Medical Corporation (Walnut Creek, CA), John Muir Magnetic Imaging Center (Walnut Creek, CA), John Muir Trauma Physicians Billing Service (Walnut Creek, CA) and 6 more organizations, listed in the Medicare section above. 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 Patrick Ryan'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 Patrick Ryan was last updated on March 13, 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.