Walter A. Boyle, MD
Critical Care Medicine (Anesthesiology) Physician · Mendocino, CA
Walter A. Boyle, MD is a critical care medicine (anesthesiology) physician with a practice address in Mendocino, California, and NPI 1093733727, issued on Jul 18, 2006. Check the license (California G49981, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Walter A. Boyle
- Credential
- MD
- Primary taxonomy
- Critical Care Medicine (Anesthesiology) Physician 207LC0200X
- License numbers
- G49981 CA
036.148697 IL
R6H50 MO
Self-reported in NPPES; status is on the state search - Practice location
- 44791 Baywood Dr, Mendocino, CA 95460
- Phone
- (314) 324-3425
- Enumerated
- Jul 18, 2006
- Record last updated
- May 11, 2022
- Medicaid IDs
- 202577300 MO
ENROLLED IL - Medicare enrollment
- Enrolled (PECOS I20240507000002); accepts Medicare assignment
- Medical or professional school
- University Of California, San Francisco School Of Medicine, 1977
- Entity
- Type 1 · individual
8 nearest critical care medicine (anesthesiology) physician records → All 146 in California → Look up another NPI →
Verify Walter A. Boyle in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G49981Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% more Medicare Part D claims than the average critical care medicine (anesthesiology) physician in 2024
381 Medicare Part D claims for 100 beneficiaries, against an average of 192 among the 107 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 14 claims were for opioids.
Most prescribed
- Levothyroxine Sodium42 claims
- Amlodipine Besylate24 claims
- Omeprazole18 claims
- Atorvastatin Calcium17 claims
- Rosuvastatin Calcium14 claims
- Benazepril Hcl12 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 practice group's MIPS final score for 2023 (Medicare payment program): 73.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Aretaeus Telemedicine IncMendocino, CA
- Carolinas Medical CenterCharlotte, NC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Walter A. Boyle among 146 critical care medicine (anesthesiology) physician records in California
Walter A. Boyle, MD is one of 146 critical care medicine (anesthesiology) physician records with a practice address in California. 86% 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 3% of them.
- NPI issued2006 · 3% of these records are older, 72% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 84% of these records are
- Graduated1977 · median 2009 among the 123 with a school on file
- Record last updated2022 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207LC0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1 critical care medicine (anesthesiology) physician record lists a practice address in Mendocino
They are 1 of the 40 NPPES records with a practice address in Mendocino, and 146 critical care medicine (anesthesiology) physician records in California.
All 146 in California → Every provider in Mendocino → Critical Care Medicine (Anesthesiology) Physician nationwide →
The 8 critical care medicine (anesthesiology) physician records with the nearest ZIP codes
- John Reitan, M.D.Davis, CA 956161710962618
- Schirin Rogers, M.D.San Jose, CA 951191699111443
- Andrea Ansari, MDSacramento, CA 958171972066686
- Gabriel Fregoso, MDSacramento, CA 958171336609445
- James Littlejohn, MD, PHDSacramento, CA 958171609197250
- Rima Rahal, M.D.Sacramento, CA 958191295049732
- Michael Lin, MDSanta Clara, CA 950511326305707
- Brian Fischer, M.D., PH.D.Redding, CA 960011124190103
Common questions
What is Walter A. Boyle, MD's NPI number?
Walter A. Boyle, MD's National Provider Identifier (NPI) is 1093733727, issued on Jul 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Walter A. Boyle, MD located?
The NPPES record lists a practice address at 44791 Baywood Dr, Mendocino, CA, 95460. Phone: (314) 324-3425. Providers update this record themselves, so call before visiting.
How can I verify Walter A. Boyle, MD's license?
NPPES lists California license number G49981, 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 Walter A. Boyle, MD prescribe under Medicare Part D?
In 2024, Walter A. Boyle, MD had 381 Medicare Part D claims for 100 beneficiaries; the average among critical care medicine (anesthesiology) physician prescribers was 192. Part D covers Medicare prescriptions only.
What is Walter A. Boyle, MD's MIPS final score?
The 2023 MIPS final score is 73.8 of 100, reported for the practice group. 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.