David John Wallace, MD, MPH
Critical Care Medicine (Internal Medicine) Physician · Castro Valley, CA
David John Wallace, MD, MPH is a critical care medicine (internal medicine) physician with a practice address in Castro Valley, California, and NPI 1770780835, issued on Jun 29, 2007. Check the license (California C170028, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- David John Wallace
- Credential
- MD, MPH
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License numbers
- C170028 CA
MD441174 PA
85105 SC
S9431 TX
Self-reported in NPPES; status is on the state search - Practice location
- 20103 Lake Chabot RD, Castro Valley, CA 94546
- Phone
- (510) 537-1234
- Enumerated
- Jun 29, 2007
- Record last updated
- Aug 30, 2025
- Medicare enrollment
- Enrolled (PECOS I20201020001890); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest critical care medicine (internal medicine) physician records → All 723 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 David John Wallace in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C170028Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through 2 group practices
- Alameda Health SystemSan Leandro, CA
- Inpatient Specialists OF California PCCastro Valley, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David John Wallace among 723 critical care medicine (internal medicine) physician records in California
David John Wallace, MD, MPH is one of 723 critical care medicine (internal medicine) physician records with a practice address in California. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 40% of them.
- NPI issued2007 · 40% of these records are older, 46% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2004 · median 2005 among the 559 with a school on file
- Record last updated2025 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Critical Care Medicine (Internal Medicine) Physician providers in California
There are 723 critical care medicine (internal medicine) physician records in California.
All 723 in California → Every provider in Castro Valley → Critical Care Medicine (Internal Medicine) Physician nationwide →
The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes
- Sandhya Ashokkumar, MDCastro Valley, CA 945461457913402
- Boris Brand, NPHercules, CA 945471710282629
- Maurice Franco, MDHayward, CA 945451760560510
- Janice Manjuck, M.D.Lafayette, CA 945491386655389
- Carmencita Agcaoili, M.D.Fremont, CA 945381285652396
- Rohit Arora, M.D.Fremont, CA 945381508086885
- Omeed Azizirad, M.D.Fremont, CA 945381386707651
- Wendy Hsu, MDFremont, CA 945381750563011
Common questions
What is David John Wallace, MD, MPH's NPI number?
David John Wallace, MD, MPH's National Provider Identifier (NPI) is 1770780835, issued on Jun 29, 2007. An NPI identifies a provider in billing; it is not a license.
Where is David John Wallace, MD, MPH located?
The NPPES record lists a practice address at 20103 Lake Chabot RD, Castro Valley, CA, 94546. Phone: (510) 537-1234. Providers update this record themselves, so call before visiting.
How can I verify David John Wallace, MD, MPH's license?
NPPES lists California license number C170028, 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.
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.