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Alexander Threlfall, MD
NPI 1669538187 · on the registry since 2006
Practice
- Address
- 800 A St
San Rafael, CA 94901 - Phone
- (415) 457-8182
- Fax
- (415) 457-7471
- Organisation at this address
- Ritter Center
Inferred from a shared address, not stated in the registry.
- Clinicians at this address
- 12
Additional practice sites
- 5789 State Farm Dr Ste 110, Rohnert Park, CA
- 3569 Round Barn Cir, Santa Rosa, CA
Registry record
- Primary taxonomy
- Psychiatry
2084P0800X
- Licence states on file
- CA
From the registry's licence fields, which are often incomplete.
- Sex
- Male
- Record last updated
- 2026-09-01
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