Zachary Daniel Preefer, DO
Anesthesiology Physician · San Jose, CA
Zachary Daniel Preefer, DO is an anesthesiology physician with a practice address in San Jose, California, and NPI 1093202566, issued on Apr 19, 2018. Check the license (California 21899, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Zachary Daniel Preefer
- Credential
- DO
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License numbers
- 21899 CA
OP61303160 WA
Self-reported in NPPES; status is on the state search - Practice location
- 2105 Forest Ave, San Jose, CA 95128
- Phone
- (408) 947-2500
- Enumerated
- Apr 19, 2018
- Record last updated
- Mar 4, 2024
- Medicare enrollment
- Enrolled (PECOS I20231128002214); accepts Medicare assignment
- Medical or professional school
- Des Moines University Of Osteopathic Medicine And Health Sciences, 2018
- Entity
- Type 1 · individual
Also registered at 2105 Forest Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sushil Adhikari, M.D.Hospitalist Physician1295907301
- Ailya BatoolStudent in an Organized Health Care Education/Training Program1457702128
- Bryan Beall, DOEmergency Medicine Physician1861870875
- Gail Bellman, M.D.Radiation Oncology Physician1417070723
- Meenesh Bhimani, MDEmergency Medicine Physician1598712069
- Constance Bowie, MDRadiation Oncology Physician1699831420
Verify Zachary Daniel Preefer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 21899Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 61.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Cep America - Anesthesia PCSan Jose, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Anesthesiology Physician providers in California
There are 7,571 anesthesiology physician records in California.
Other anesthesiology physician records in California
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- Elma Abad-Pelsang, MDDel Mar, CA1689611923
- Rolando Abada, M.D.San Diego, CA1952319071
- Maher Abadir, MDTurlock, CA1669491718
- Jerry Abajian, M.D.Napa, CA1851336218
- Carolyn AbbasiLoma Linda, CA1811287311
- Christine Abboud, D.O.Walnut Creek, CA1174901508
- Steven Abboud, MDPalo Alto, CA1619364908
- Therese Abboud, M.D.Coronado, CA1003112913
- Mohammed Abdel Rahim, M.B.CH.BNewport Beach, CA1255520854
Common questions
What is Zachary Daniel Preefer, DO's NPI number?
Zachary Daniel Preefer, DO's National Provider Identifier (NPI) is 1093202566, issued on Apr 19, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Zachary Daniel Preefer, DO located?
The NPPES record lists a practice address at 2105 Forest Ave, San Jose, CA, 95128. Phone: (408) 947-2500. Providers update this record themselves, so call before visiting.
How can I verify Zachary Daniel Preefer, DO's license?
NPPES lists California license number 21899, 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.
What is Zachary Daniel Preefer, DO's MIPS final score?
The 2023 MIPS final score is 61.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.