RYAN MICHAEL JOHNSTON D.O.
NPI 1780815522
Hospitalist in Escondido, CA
About Ryan Michael Johnston D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RYAN MICHAEL JOHNSTON D.O. (NPI 1780815522) is an individual hospitalist provider in Escondido, California, licensed in California (20A12236) and active in the NPI registry since July 2009. He is enrolled in Medicare PECOS, is affiliated with Sparrow Carson Hospital, and is a graduate of Arizona College Of Osteopathic Medicine Mid Western University (2009).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 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
Ryan Michael Johnston D.o. 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 Reassignments
5Medicare enrollment records show Ryan Johnston reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Escondido, CA 92025
- Reassigned Medicare billing, California enrollment
- 131 clinicians in this Medicare group
Escondido, CA 92025
- Reassigned Medicare billing, California enrollment
- 962 clinicians in this Medicare group
Phoenix, AZ 85027
- Reassigned Medicare billing, Arizona enrollment
- 99 clinicians in this Medicare group
East Palo Alto, CA 94303
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: County Of San Mateo
- Also billed through NPI 1831268580 (California)
- 597 clinicians in this Medicare group
Lansing, MI 48912
- Reassigned Medicare billing, Michigan enrollment
- 115 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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Sparrow Carson Hospital
Acute Care Hospitals · Carson City, MIEdward W Sparrow Hospital
Acute Care Hospitals · Lansing, MIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92025 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 3
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
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 Ryan Johnston's NPI number?
The NPI number for Ryan Johnston is 1780815522. It was assigned to this individual provider in the NPPES registry on July 28, 2009.
Where is Ryan Johnston located?
Ryan Johnston practices at 460 N Elm St, Escondido, CA 92025. The listed phone number is (760) 520-8100.
What is Ryan Johnston's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Ryan Johnston enrolled in Medicare?
Yes. Ryan Johnston 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 organizations bill Medicare for Ryan Johnston's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ryan Johnston reassigns Medicare benefits to 5 organizations: California Emergency Physicians Medical Group A Professional Corp (Escondido, CA), Galen Inpatient Physicians Inc (Escondido, CA), Vituity - Arizona Hospitalists PC (Phoenix, AZ), San Mateo County (East Palo Alto, CA) and Vituity - Michigan Hospitalists PC (Lansing, MI). 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 Ryan Johnston's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ryan Johnston accept?
Health plans from Priority Health list Ryan Johnston 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 Ryan Johnston affiliated with any hospitals?
According to CMS data, Ryan Johnston is affiliated with Sparrow Carson Hospital and Edward W Sparrow Hospital.
When was this NPI record last updated?
The NPPES record for Ryan Johnston was last updated on May 26, 2022. 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.
# Ryan Michael Johnston, D.O. · NPI 1780815522
Hospitalist physician in Escondido, California. Individual provider, active in the CMS NPPES registry since July 28, 2009.
## Identity
- **NPI:** 1780815522 (Entity type: Individual)
- **Enumerated:** July 28, 2009
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** 20A12236 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 460 N ELM ST, Escondido, CA 92025-3002
- **Phone:** (760) 520-8100
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): California Emergency Physicians Medical Group A Professional Corp (NPI 1396126777, Escondido, CA); Galen Inpatient Physicians Inc (NPI 1841531704, Escondido, CA); Vituity - Arizona Hospitalists PC (NPI 1912629916, Phoenix, AZ); San Mateo County (NPI 1710086301, East Palo Alto, CA); Vituity - Michigan Hospitalists PC (NPI 1487278156, Lansing, MI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Arizona College Of Osteopathic Medicine Mid Western University, class of 2009
## Record status
- **NPPES last updated:** May 26, 2022
- **Other identifiers:** Other W14158 (CA)
---
Source: [NPI Profile](https://npiprofile.com/npi/1780815522) · Data from the CMS NPPES public registry.