Lisa Y. Ryan, M.D.
Hospitalist Physician · Santa Maria, CA
Lisa Y. Ryan, M.D. is a hospitalist physician with a practice address in Santa Maria, California, and NPI 1134157639, issued on Jun 30, 2006. Check the license (California A88086, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Lisa Y. Ryan
- Credential
- M.D.
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- A88086 CA
Self-reported in NPPES; status is on the state search - Practice location
- 235 S Palisade Dr, Santa Maria, CA 93454
- Phone
- (805) 739-3561
- Enumerated
- Jun 30, 2006
- Record last updated
- Nov 3, 2023
- Medicare enrollment
- Enrolled (PECOS I20060130000518); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Also registered at 235 S Palisade Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- John Campbell, MDGeriatric Medicine (Family Medicine) Physician1346450970
- Willard Chung, MDFamily Medicine Physician1285898635
Verify Lisa Y. Ryan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A88086Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
57% fewer Medicare Part D claims than the average hospitalist physician in 2024
222 Medicare Part D claims for 65 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims. 14 claims were for opioids.
Most prescribed
- Atorvastatin Calcium18 claims
- Valsartan13 claims
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.
The MIPS final score for 2023 (Medicare payment program): 96.5 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Vituity Hospitalists PCSan Luis Obispo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Lisa Y. Ryan among 3,099 hospitalist physician records in California
Lisa Y. Ryan, M.D. 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 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 73% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated1997 · median 2010 among the 2,505 with a school on file
- Record last updated2023 · 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 Santa Maria → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Alina Dalmendray, MDSanta Maria, CA 934541386654168
- Stephen Herrick, D.O.Santa Maria, CA 934541588044549
- Katie Julian, MDSanta Maria, CA 934541730205220
- Cristina Valero, MDSanta Maria, CA 934541467629931
- Diane Noyes, M.D.Templeton, CA 934651497738348
- Tammie Arnold, DOArroyo Grande, CA 934211669465878
- Ann Bollay, MDSan Luis Obispo, CA 934051487610333
- Ashlynn Gordon, D.O.San Luis Obispo, CA 934051255779641
Common questions
What is Lisa Y. Ryan, M.D.'s NPI number?
Lisa Y. Ryan, M.D.'s National Provider Identifier (NPI) is 1134157639, issued on Jun 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Lisa Y. Ryan, M.D. located?
The NPPES record lists a practice address at 235 S Palisade Dr, Santa Maria, CA, 93454. Phone: (805) 739-3561. Providers update this record themselves, so call before visiting.
How can I verify Lisa Y. Ryan, M.D.'s license?
NPPES lists California license number A88086, 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 Lisa Y. Ryan, M.D. prescribe under Medicare Part D?
In 2024, Lisa Y. Ryan, M.D. had 222 Medicare Part D claims for 65 beneficiaries; the average among hospitalist physician prescribers was 521. Part D covers Medicare prescriptions only.
What is Lisa Y. Ryan, M.D.'s MIPS final score?
The 2023 MIPS final score is 96.5 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.