MICHAEL G. RYAN MD
NPI 1295883163
Neuromusculoskeletal Medicine & OMM in San Diego, CA
About Michael G. Ryan Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MICHAEL G. RYAN MD (NPI 1295883163) is an individual neuromusculoskeletal medicine & omm provider in San Diego, California, licensed in California (A72821) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS and is a graduate of University Of Southern California Keck School Of Medicine (1994).
NPPES Registry Identity
Specialties & Licenses
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
Michael G. Ryan 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 Michael Ryan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
San Diego, CA 92120
- Reassigned Medicare billing, California enrollment
- 13,921 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.
SAN DIEGO, CA 92120
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 Michael Ryan's NPI number?
The NPI number for Michael Ryan is 1295883163. It was assigned to this individual provider in the NPPES registry on January 8, 2007.
Where is Michael Ryan located?
Michael Ryan practices at 4647 Zion Ave, San Diego, CA 92120. The listed phone number is (619) 528-5000.
What is Michael Ryan's specialty?
The primary specialty registered for this NPI is Neuromusculoskeletal Medicine & OMM with taxonomy code 204D00000X.
Is Michael Ryan enrolled in Medicare?
Yes. Michael Ryan 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 Michael Ryan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Ryan reassigns Medicare benefits to Southern California Permanente Medical Group (San Diego, CA). 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 Michael 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 Michael Ryan was last updated on November 30, 2021. 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.
# Michael G. Ryan, MD · NPI 1295883163
Neuromusculoskeletal Medicine & OMM physician in San Diego, California. Individual provider, active in the CMS NPPES registry since January 8, 2007.
## Identity
- **NPI:** 1295883163 (Entity type: Individual)
- **Enumerated:** January 8, 2007
- **Primary specialty:** Neuromusculoskeletal Medicine & OMM · taxonomy 204D00000X
- **State license:** A72821 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 4647 ZION AVE, San Diego, CA 92120-2507
- **Phone:** (619) 528-5000
## 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:** Southern California Permanente Medical Group (NPI 1225060742, San Diego, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Southern California Keck School Of Medicine, class of 1994
## Record status
- **NPPES last updated:** November 30, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1295883163) · Data from the CMS NPPES public registry.