William J. Zinnanti, MD, PHD
Neurology with Special Qualifications in Child Neurology Physician · Santa Cruz, CA
William J. Zinnanti, MD, PHD is a neurology with special qualifications in child neurology physician with a practice address in Santa Cruz, California, and NPI 1497035893, issued on Aug 17, 2011. Check the license (California A118089, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- William J. Zinnanti
- Credential
- MD, PHD
- Primary taxonomy
- Neurology with Special Qualifications in Child Neurology Physician 2084N0402X
- License number
- A118089 CA
Self-reported in NPPES; status is on the state search - Practice location
- 550 Water St, Santa Cruz, CA 95060
- Phone
- (831) 600-7697
- Enumerated
- Aug 17, 2011
- Record last updated
- Jan 26, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (800) 459-1389
- Entity
- Type 1 · individual
8 nearest neurology with special qualifications in child neurology physician records → All 271 in California → Look up another NPI →
Also registered at 550 Water St
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Verify William J. Zinnanti in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A118089Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
6% fewer Medicare Part D claims than the average neurology with special qualifications in child neurology physician in 2024
262 Medicare Part D claims for 26 beneficiaries, against an average of 278 among the 900 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims.
Most prescribed
- Escitalopram Oxalate28 claims
- Dextroamphetamine-Amphetamine19 claims
- Oxcarbazepine19 claims
- Aripiprazole15 claims
- Lorazepam14 claims
- Lamotrigine13 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: $20.97
1 payment: food and beverage; the largest payer was Neuropace, Inc. The 1,195 providers of this specialty with any payment received $5,568.05 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.
William J. Zinnanti among 271 neurology with special qualifications in child neurology physician records in California
William J. Zinnanti, MD, PHD is one of 271 neurology with special qualifications in child neurology physician records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 56% of them.
- NPI issued2011 · 56% of these records are older, 41% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 33% of these records are
- Record last updated2017 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0402X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology with Special Qualifications in Child Neurology Physician providers in California
There are 271 neurology with special qualifications in child neurology physician records in California.
All 271 in California → Every provider in Santa Cruz → Neurology with Special Qualifications in Child Neurology Physician nationwide →
The 8 neurology with special qualifications in child neurology physician records with the nearest ZIP codes
- Jorina Elbers, MDSanta Cruz, CA 950601508132457
- Ping-Ru Ko, M.D.Santa Clara, CA 950511396048351
- Ann Lewis, M.D., PH.DSanta Clara, CA 950511285773366
- Dwarka Sankar, MDSanta Clara, CA 950511023195955
- Edward(ted) Guarino, M.D.San Jose, CA 951241558455741
- Jane Maclean, M.D.San Jose, CA 951241356578843
- Ann Robbins, MD, PHDSan Jose, CA 951241205397510
- Brandon Seminatore, MDSan Jose, CA 951241528599701
Common questions
What is William J. Zinnanti, MD, PHD's NPI number?
William J. Zinnanti, MD, PHD's National Provider Identifier (NPI) is 1497035893, issued on Aug 17, 2011. An NPI identifies a provider in billing; it is not a license.
Where is William J. Zinnanti, MD, PHD located?
The NPPES record lists a practice address at 550 Water St, Santa Cruz, CA, 95060. Phone: (831) 600-7697. Providers update this record themselves, so call before visiting.
How can I verify William J. Zinnanti, MD, PHD's license?
NPPES lists California license number A118089, 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 J. Zinnanti, MD, PHD prescribe under Medicare Part D?
In 2024, William J. Zinnanti, MD, PHD had 262 Medicare Part D claims for 26 beneficiaries; the average among neurology with special qualifications in child neurology physician prescribers was 278. 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.