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Mary Elizabeth Feistner

NPI 1508499526 · on the registry since 2020 · sole proprietor

Practice

Address: 934 N Mountain Ave Ste A-D
Upland, CA 91786
Phone: (951) 683-6596
Organisation at this address: Inland Valley Drug And Alcohol Recovery Services
San Bernardino County Department Of Behavioral Health
Inferred from a shared address, not stated in the registry.
Clinicians at this address: 39

Registry record

Primary taxonomy: Addiction (Substance Use Disorder) Counselor
101YA0400X
Licence states on file: CA
From the registry's licence fields, which are often incomplete.
Sex: Female
Record last updated: 2025-12-10

Source: CMS National Plan and Provider Enumeration System. Registration is not the same as practising, and the registry records no retirement — some people listed here no longer practise. More in California