Xa D. Johnson, M.D.
Critical Care Medicine (Anesthesiology) Physician · Oakland, CA
Xa D. Johnson, M.D. is a critical care medicine (anesthesiology) physician with a practice address in Oakland, California, and NPI 1093920084, issued on May 11, 2007. Check the license (California A98000, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Xa D. Johnson
- Credential
- M.D.
- Primary taxonomy
- Critical Care Medicine (Anesthesiology) Physician 207LC0200X
- License number
- A98000 CA
Self-reported in NPPES; status is on the state search - Practice location
- 275 W Macarthur Blvd, Oakland, CA 94611
- Phone
- (510) 752-6238
- Enumerated
- May 11, 2007
- Record last updated
- Dec 15, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20101026001144); accepts Medicare assignment
- Medical or professional school
- University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 2005
- Entity
- Type 1 · individual
8 nearest critical care medicine (anesthesiology) physician records → All 146 in California → Look up another NPI →
Also registered at 275 W Macarthur Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- David Aaronson, MDUrology Physician1215053129
- Paul-Andre Abboud, M.D.Emergency Medicine Physician1710065503
- Brittany Abeldt, MDPsychiatry Physician1982353884
- Bilal Abu-Alrub, DOStudent in an Organized Health Care Education/Training Program1609760768
- Walter Acuna, MDInternal Medicine Physician1972655108
- Brett Adams, MDStudent in an Organized Health Care Education/Training Program1841731098
Verify Xa D. Johnson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A98000Check 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 one group practice
- Permanente Medical Group IncWalnut Creek, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Xa D. Johnson among 146 critical care medicine (anesthesiology) physician records in California
Xa D. Johnson, M.D. is one of 146 critical care medicine (anesthesiology) physician records with a practice address in California. 86% 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 28% of them.
- NPI issued2007 · 28% of these records are older, 64% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 84% of these records are
- Graduated2005 · median 2009 among the 123 with a school on file
- Record last updated2021 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207LC0200X 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 (Anesthesiology) Physician providers in California
There are 146 critical care medicine (anesthesiology) physician records in California.
All 146 in California → Every provider in Oakland → Critical Care Medicine (Anesthesiology) Physician nationwide →
The 8 critical care medicine (anesthesiology) physician records with the nearest ZIP codes
- So Young Kim, MDOakland, CA 946111699934638
- Lynell Williams, MDOakland, CA 946091164662128
- Jordan Brand, M.D.Oakland, CA 946021174782270
- Michael WuOakland, CA 946021225458573
- Darrell Randle, MDWalnut Creek, CA 945981285662056
- Nitesh Mody, DONapa, CA 945591952609828
- Reade Tillman, MDTravis Afb, CA 945351912469750
- Erika Brinson, M.D.Greenbrae, CA 949041558617027
Common questions
What is Xa D. Johnson, M.D.'s NPI number?
Xa D. Johnson, M.D.'s National Provider Identifier (NPI) is 1093920084, issued on May 11, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Xa D. Johnson, M.D. located?
The NPPES record lists a practice address at 275 W Macarthur Blvd, Oakland, CA, 94611. Phone: (510) 752-6238. Providers update this record themselves, so call before visiting.
How can I verify Xa D. Johnson, M.D.'s license?
NPPES lists California license number A98000, 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.