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

Individual provider Anesthesiology Physician · NPI 1457338683

Dr. William B. Ahnn, MD is an Anesthesiology in San Bernardino, California. Qualified in 1969, 57 years ago. Practices with Palm Springs Anesthesia Services PC, a 89-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
57
Licensed in
CA
In the registry since
2005
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

2101 N Waterman Ave
San Bernardino, CA 92404-4836
Phone: (909) 883-3711
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence A31405 (CA)
Pain Medicine (Anesthesiology) Physician Taxonomy 207LP2900X · Licence A31405 (CA)

Record details

NPI number1457338683
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 29, 2005
Last updated in NPPESNovember 10, 2015
Mailing address210 N Tustin Ave, Santa Ana, CA 92705-3807

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyANESTHESIOLOGY
Also practisesINTERVENTIONAL PAIN MANAGEMENT
Medical schoolOTHER
Graduated 1969 (57 years in practice)
Group practice Palm Springs Anesthesia Services Pc — 89 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in San Bernardino