Kenneth W. Westphal, MD
Specialist · Santa Cruz, CA
Kenneth W. Westphal, MD is a specialist with a practice address in Santa Cruz, California, and NPI 1669545174, issued on Nov 15, 2006. Check the license (California G59273, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Kenneth W. Westphal
- Credential
- MD
- Primary taxonomy
- Specialist 174400000X
- License number
- G59273 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1555 Soquel Avenue, Santa Cruz, CA 95065
- Phone
- (831) 462-7700
- Enumerated
- Nov 15, 2006
- Record last updated
- Nov 13, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (831) 462-7607
- Medicare enrollment
- Enrolled (PECOS I20090528000577); accepts Medicare assignment
- Medical or professional school
- Loma Linda University School Of Medicine, 1984
- Entity
- Type 1 · individual
8 nearest specialist records → All 5,749 in California → Look up another NPI →
Also registered at 1555 Soquel Avenue
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Carlene Hawksley, MDAnatomic Pathology Physician1518030022
- Paula Quinn, MDSpecialist1861565376
Verify Kenneth W. Westphal in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license G59273Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 78.3 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 one group practice
- Associated Pathology Medical Group IncSanta Cruz, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kenneth W. Westphal among 5,749 specialist records in California
Kenneth W. Westphal, MD is one of 5,749 specialist records with a practice address in California. 30% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 60% newer
- In a Medicare fileYes · 30% of these records are
- In the CMS Doctors and Clinicians fileYes · 19% of these records are
- Graduated1984 · median 1989 among the 1,075 with a school on file
- Record last updated2007 · 77% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Specialist providers in California
There are 5,749 specialist records in California.
All 5,749 in California → Every provider in Santa Cruz → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Rami Dakkuri, MDSanta Cruz, CA 950651558318758
- Maya Dawson, ART PTSanta Cruz, CA 950651568536316
- Paul Godin, MDSanta Cruz, CA 950651972506632
- Paula Quinn, MDSanta Cruz, CA 950651861565376
- Thaila Ramanujam, MDSanta Cruz, CA 950651801999206
- Rajinder Singh, M.D.Santa Cruz, CA 950651518007889
- Nancy Thorner, MDSanta Cruz, CA 950651649294190
- Naomi Silber, MDSanta Cruz, CA 950641134133176
Common questions
What is Kenneth W. Westphal, MD's NPI number?
Kenneth W. Westphal, MD's National Provider Identifier (NPI) is 1669545174, issued on Nov 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Kenneth W. Westphal, MD located?
The NPPES record lists a practice address at 1555 Soquel Avenue, Santa Cruz, CA, 95065. Phone: (831) 462-7700. Providers update this record themselves, so call before visiting.
How can I verify Kenneth W. Westphal, MD's license?
NPPES lists California license number G59273, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
What is Kenneth W. Westphal, MD's MIPS final score?
The 2023 MIPS final score is 78.3 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.