William Richard Raffo, M.D.
Nephrology Physician · Santa Cruz, CA
William Richard Raffo, M.D. is a nephrology physician with a practice address in Santa Cruz, California, and NPI 1659356137, issued on Dec 7, 2005. Check the license (California A80608, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- William Richard Raffo
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- A80608 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2025 Soquel Ave, Santa Cruz, CA 95062
- Phone
- (831) 458-5597
- Enumerated
- Dec 7, 2005
- Record last updated
- Dec 2, 2011 (not updated in 15 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20040625001051); accepts Medicare assignment
- Medical or professional school
- Creighton University School Of Medicine, 2001
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 1,468 in California → Look up another NPI →
Also registered at 2025 Soquel Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Farzana AbedFamily Nurse Practitioner1669932588
- Rachel Abrams, M.D.Family Medicine Physician1578542171
- Erin Agenjo Hohengarten, LCSWClinical Social Worker1376978791
- Bahar Aghighi, MDEndocrinology, Diabetes & Metabolism Physician1770562134
- Walter Alexander, M.D.Surgery Physician1386946606
- Timothy W Allari, MDInternal Medicine Physician1013996370
Verify William Richard Raffo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A80608Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
20% fewer Medicare Part D claims than the average nephrology physician in 2024
1,167 Medicare Part D claims for 207 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D.
Most prescribed
- Amlodipine Besylate93 claims
- Olmesartan Medoxomil89 claims
- Farxiga74 claims
- Jardiance59 claims
- Carvedilol44 claims
- Allopurinol42 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.
Industry payments in 2024: $11,771.52
24 payments; by number, the most common kind was food and beverage; the largest payer was Ardelyx, Inc. The 8,230 providers of this specialty with any payment received $3,091.37 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
- Sutter Bay Medical FoundationFreedom, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Richard Raffo among 1,468 nephrology physician records in California
William Richard Raffo, M.D. is one of 1,468 nephrology physician records with a practice address in California. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 90% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2001 · median 2001 among the 1,128 with a school on file
- Record last updated2011 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in California
There are 1,468 nephrology physician records in California.
All 1,468 in California → Every provider in Santa Cruz → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Prachi Jog, M.D., M.SSanta Cruz, CA 950621770779431
- Shraddha Rana, M.DSanta Cruz, CA 950621538459961
- Surinder Kumar, M.D., FACP,FASN,CCDSanta Cruz, CA 950651437241809
- Maritina Rodriguez, M.D.Santa Cruz, CA 950651063504447
- Gurbir Singh, MDSanta Cruz, CA 950651760861322
- Jennifer Kumar, M.D.Santa Clara, CA 950511457617896
- Ajit Mahapatra, MDSanta Clara, CA 950511699853275
- Sami Mazbar, MDSanta Clara, CA 950511134206063
Common questions
What is William Richard Raffo, M.D.'s NPI number?
William Richard Raffo, M.D.'s National Provider Identifier (NPI) is 1659356137, issued on Dec 7, 2005. An NPI identifies a provider in billing; it is not a license.
Where is William Richard Raffo, M.D. located?
The NPPES record lists a practice address at 2025 Soquel Ave, Santa Cruz, CA, 95062. Phone: (831) 458-5597. Providers update this record themselves, so call before visiting.
How can I verify William Richard Raffo, M.D.'s license?
NPPES lists California license number A80608, 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 William Richard Raffo, M.D. prescribe under Medicare Part D?
In 2024, William Richard Raffo, M.D. had 1,167 Medicare Part D claims for 207 beneficiaries; the average among nephrology physician prescribers was 1,465. 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.