Individual
DR. MARK A. JEFFRIES
Active
Individual
DR. MARK A. JEFFRIES
Active
Sole proprietor
No
Provider details
NPI number
Gender
Man
Credential
D.O.
Taxonomy
Speciality
Code
Description
License number
State
207R00000X
Internal Medicine Physician
K9309
TX
207RG0100X
Gastroenterology Physician
Primary
K9309
TX
Other
Other identifiers
Code
Description
Identifier
Issuer
State
01
—
110248274
RR/MEDICARE
TX
05
—
1572059-01
—
TX
01
—
1572059-02
CSHCN
TX
01
—
8G8416
BLUE SHIELD
TX
Enumeration date
03/27/2006
Last updated
03/03/2026
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