William Maxwell Buchholz, MD
Hematology (Internal Medicine) Physician · Los Altos, CA
William Maxwell Buchholz, MD is a hematology (internal medicine) physician with a practice address in Los Altos, California, and NPI 1699774406, issued on Jul 14, 2005. Check the license (California G-23475, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- William Maxwell Buchholz
- Credential
- MD
- Primary taxonomy
- Hematology (Internal Medicine) Physician 207RH0000X
- License number
- G-23475 CA
Self-reported in NPPES; status is on the state search - Practice location
- 851 Fremont Ave, Los Altos, CA 94024
- Phone
- (650) 980-1982
- Enumerated
- Jul 14, 2005
- Record last updated
- Jul 25, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (650) 229-1011
- Entity
- Type 1 · individual
Also registered at 851 Fremont Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Jeanette Bland, M.D.Psychiatry Physician1851459192
- Lourdes Bella Bourdon, PTPhysical Therapist1811092919
- Louise Burton, MFTMarriage & Family Therapist1417095977
- Maya Chatav, PH.D.Clinical Psychologist1851843973
Verify William Maxwell Buchholz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G-23475Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Hematology (Internal Medicine) Physician providers in California
There are 175 hematology (internal medicine) physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
Other hematology (internal medicine) physician records in California
- John Adamson, MDSan Diego, CA1477504801
- Mhd Monzr Al Malki, M.D.Duarte, CA1043489362
- Ibrahim Aldoss, M.D.Duarte, CA1861692485
- Haris Ali, M.D.Duarte, CA1467672907
- Julio Alvarenga Thiebaud, M.D.Irvine, CA1457770497
- Joseph Alvarnas, M.D.Duarte, CA1558321745
- Idoroenyi Amanam, M.D.Duarte, CA1205257920
- Sally Arai, MDStanford, CA1881739530
- Ahmed Aribi, MDDuarte, CA1912024910
- Andrew Artz, M.D., M.S.Duarte, CA1306859772
Common questions
What is William Maxwell Buchholz, MD's NPI number?
William Maxwell Buchholz, MD's National Provider Identifier (NPI) is 1699774406, issued on Jul 14, 2005. An NPI identifies a provider in billing; it is not a license.
Where is William Maxwell Buchholz, MD located?
The NPPES record lists a practice address at 851 Fremont Ave, Los Altos, CA, 94024. Phone: (650) 980-1982. Providers update this record themselves, so call before visiting.
How can I verify William Maxwell Buchholz, MD's license?
NPPES lists California license number G-23475, 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. 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.