Ryan Michael Johnston, D.O.
Hospitalist Physician · Escondido, CA
Ryan Michael Johnston, D.O. is a hospitalist physician with a practice address in Escondido, California, and NPI 1780815522, issued on Jul 28, 2009. Check the license (California 20A12236, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ryan Michael Johnston
- Credential
- D.O.
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License numbers
- 20A12236 CA
008808 AZ
5101018515 MI
Self-reported in NPPES; status is on the state search - Practice location
- 460 N Elm St, Escondido, CA 92025
- Phone
- (760) 520-8100
- Enumerated
- Jul 28, 2009
- Record last updated
- May 26, 2022
- Medicare enrollment
- Enrolled (PECOS I20210618001693); accepts Medicare assignment
- Medical or professional school
- Arizona College Of Osteopathic Medicine Mid Western University, 2009
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Also registered at 460 N Elm St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Anmar AlhaddadPhysician Assistant1780573634
- Lucy Artman, PA-CPhysician Assistant1962213116
- Michael Avila, M.D.Family Medicine Physician1962936450
- Ruth Bravo, NPNurse Practitioner1013938224
- Betty Brown, NPNurse Practitioner1659394716
- Samantha Chambers, NPFamily Nurse Practitioner1851768667
Verify Ryan Michael Johnston in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A12236Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average hospitalist physician in 2024
47 Medicare Part D claims for 15 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $15.00
1 payment: food and beverage; the largest payer was Alnylam Pharmaceuticals Inc. The 7,324 providers of this specialty with any payment received $494.84 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Vituity - Michigan Hospitalists PCLansing, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ryan Michael Johnston among 3,099 hospitalist physician records in California
Ryan Michael Johnston, D.O. is one of 3,099 hospitalist physician records with a practice address in California. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 39% of them.
- NPI issued2009 · 39% of these records are older, 56% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated2009 · median 2010 among the 2,505 with a school on file
- Record last updated2022 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in California
There are 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in Escondido → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Jayanthi Magesh, M.DEscondido, CA 920251043243793
- Sandhya Bhalla-Regev, MDEncinitas, CA 920241376581967
- Christina ChengEncinitas, CA 920241962031112
- Douglas Crowley, M.D.Encinitas, CA 920241356501902
- Robert Dinh, M.D.Encinitas, CA 920241922077031
- Neema Froutan, MDEncinitas, CA 920241699904979
- Hui-Shan Hsu, M.D.Encinitas, CA 920241578889689
- Chino Mannikarottu, M.DEncinitas, CA 920241407171937
Common questions
What is Ryan Michael Johnston, D.O.'s NPI number?
Ryan Michael Johnston, D.O.'s National Provider Identifier (NPI) is 1780815522, issued on Jul 28, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Ryan Michael Johnston, D.O. located?
The NPPES record lists a practice address at 460 N Elm St, Escondido, CA, 92025. Phone: (760) 520-8100. Providers update this record themselves, so call before visiting.
How can I verify Ryan Michael Johnston, D.O.'s license?
NPPES lists California license number 20A12236, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ryan Michael Johnston, D.O. prescribe under Medicare Part D?
In 2024, Ryan Michael Johnston, D.O. had 47 Medicare Part D claims for 15 beneficiaries; the average among hospitalist physician prescribers was 521. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.