Alexander D. Krassner, DO
Hospitalist Physician · Oakland, CA
Alexander D. Krassner, DO is a hospitalist physician with a practice address in Oakland, California, and NPI 1568744654, issued on Sep 14, 2011. Check the license (California 20A11745, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Alexander D. Krassner
- Credential
- DO
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- 20A11745 CA
Self-reported in NPPES; status is on the state search - Practice location
- 275 W Macarthur, Oakland, CA 94611
- Phone
- (510) 752-1000
- Enumerated
- Sep 14, 2011
- Record last updated
- Feb 11, 2022
- Medicare enrollment
- Enrolled (PECOS I20120531000523); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Also registered at 275 W Macarthur
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Alexander D. Krassner in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A11745Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% fewer Medicare Part D claims than the average hospitalist physician in 2024
92 Medicare Part D claims for 42 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D.
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
- Permanente Medical Group IncOakland, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alexander D. Krassner among 3,099 hospitalist physician records in California
Alexander D. Krassner, DO 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 2011, is newer than 47% of them.
- NPI issued2011 · 47% of these records are older, 49% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated2009 · 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).
Hospitalist Physician providers in California
There are 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in Oakland → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Juan Asenjo, MDOakland, CA 946111609954486
- Steven Coppola, MDOakland, CA 946111366520132
- Jennifer Dykes, MDOakland, CA 946111184731580
- Emory Fong, MDOakland, CA 946111184702979
- Annie Hovsepian, MDOakland, CA 946111518045301
- Jeffrey Ilfeld, MDOakland, CA 946111982782777
- Aubrey Ingraham, MDOakland, CA 946111316025984
- Cary Lee, MDOakland, CA 946111871671644
Common questions
What is Alexander D. Krassner, DO's NPI number?
Alexander D. Krassner, DO's National Provider Identifier (NPI) is 1568744654, issued on Sep 14, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Alexander D. Krassner, DO located?
The NPPES record lists a practice address at 275 W Macarthur, Oakland, CA, 94611. Phone: (510) 752-1000. Providers update this record themselves, so call before visiting.
How can I verify Alexander D. Krassner, DO's license?
NPPES lists California license number 20A11745, 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 Alexander D. Krassner, DO prescribe under Medicare Part D?
In 2024, Alexander D. Krassner, DO had 92 Medicare Part D claims for 42 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.