Individual
MARK H ELLIS
Active
Sole proprietor
No
Provider details
NPI number
Gender
Man
Credential
MD
Taxonomy
Speciality
Code
Description
License number
State
207R00000X
Internal Medicine Physician
A26035
CA
207RI0200X
Infectious Disease Physician
Primary
A26035
CA
Other
Other identifiers
Code
Description
Identifier
Issuer
State
05
—
00A260350
—
CA
Enumeration date
10/06/2006
Last updated
09/11/2025
Update your record
If you believe information in your NPPES record is inaccurate, or if you wish to update or deactivate your NPI, you can do so directly with CMS at https://nppes.cms.hhs.gov.
About Stedi
Stedi is the only programmable healthcare clearinghouse. You can use Stedi's APIs to process eligibility checks, claims, remits, and more.
Sign up