Ezekiel Volkert, M.D.
Hospitalist Physician · Castro Valley, CA
Ezekiel Volkert, M.D. is a hospitalist physician with a practice address in Castro Valley, California, and NPI 1740505023, issued on Mar 30, 2010. Check the license (California A138475, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ezekiel Volkert
- Credential
- M.D.
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License numbers
- A138475 CA
269194 NY
Self-reported in NPPES; status is on the state search - Practice location
- 20103 Lake Chabot RD, Castro Valley, CA 94546
- Phone
- (510) 727-3256
- Enumerated
- Mar 30, 2010
- Record last updated
- Jul 21, 2022
- Fax
- (510) 727-3107
- Medicare enrollment
- Enrolled (PECOS I20151014003414); accepts Medicare assignment
- Medical or professional school
- University Of Colorado School Of Medicine, Denver, 2010
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Also registered at 20103 Lake Chabot RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alexei AdanEmergency Medicine Physician1679968978
- Maria Ait Rais, M.D.Hospitalist Physician1811239304
- Latricia Amadeo, RNRegistered Nurse1003407115
- Sandhya Ashokkumar, MDCritical Care Medicine (Internal Medicine) Physician1457913402
- Oluwaseyi Balasire, M.D.Hospitalist Physician1003235243
- Rachna Bali, DOHospitalist Physician1346541554
Verify Ezekiel Volkert in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A138475Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
59% fewer Medicare Part D claims than the average hospitalist physician in 2024
213 Medicare Part D claims for 74 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. 13 claims were for opioids.
Most prescribed
- Eliquis32 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.
Bills Medicare through one group practice
- Sutter Bay Medical FoundationCastro Valley, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ezekiel Volkert among 3,099 hospitalist physician records in California
Ezekiel Volkert, 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 2010, is newer than 44% of them.
- NPI issued2010 · 44% of these records are older, 53% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated2010 · median 2010 among the 2,505 with a school on file
- Record last updated2022 · 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).
29 hospitalist physician records list a practice address in Castro Valley
They are 29 of the 999 NPPES records with a practice address in Castro Valley, and 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in Castro Valley → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Arash Foroutani, M.D.Castro Valley, CA 945461346267309
- Alina Haq, M.D.Castro Valley, CA 945461669665436
- Fatma Khakoo, MDCastro Valley, CA 945461326045196
- Pei-Fen Lin, MDCastro Valley, CA 945461740429885
- Daisy Maron, M.D.Castro Valley, CA 945461275565954
- Summaiya Muhammad, M.DCastro Valley, CA 945461841454535
- Tianli Pan, MDCastro Valley, CA 945461578783791
- Sindhu Radhakrishnan, MDCastro Valley, CA 945461497833073
Common questions
What is Ezekiel Volkert, M.D.'s NPI number?
Ezekiel Volkert, M.D.'s National Provider Identifier (NPI) is 1740505023, issued on Mar 30, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Ezekiel Volkert, M.D. located?
The NPPES record lists a practice address at 20103 Lake Chabot RD, Castro Valley, CA, 94546. Phone: (510) 727-3256. Providers update this record themselves, so call before visiting.
How can I verify Ezekiel Volkert, M.D.'s license?
NPPES lists California license number A138475, 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 Ezekiel Volkert, M.D. prescribe under Medicare Part D?
In 2024, Ezekiel Volkert, M.D. had 213 Medicare Part D claims for 74 beneficiaries; the average among hospitalist physician prescribers was 521. 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.