Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Allan J. Flach, MD

Individual provider Ophthalmology Physician · NPI 1043261134

Dr. Allan J. Flach, MD is an Ophthalmology Physician in San Francisco, California. Licensed in California. Registered with an NPI since 2006.

Licensed in
CA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

400 Parnassus Ave
San Francisco, CA 94143-2202
Phone: (415) 353-2800
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Ophthalmology Physician (primary) Taxonomy 207W00000X · Licence G23719 (CA)

Record details

NPI number1043261134
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 13, 2006
Last updated in NPPESJuly 13, 2026

Other providers in San Francisco