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

Jerald P Underdahl, MD

Individual provider Ophthalmology Physician · NPI 1043284581

Jerald P Underdahl, MD is an Ophthalmology Physician in Phoenix, Arizona. Licensed in Arizona. Registered with an NPI since 2006.

Licensed in
AZ
In the registry since
2006
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

1331 N 7th St 100
Phoenix, AZ 85006-2754
Phone: (602) 222-2234
Fax: (866) 985-7247
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Specialties & licences

Ophthalmology Physician (primary) Taxonomy 207W00000X · Licence 28541 (AZ)

Record details

NPI number1043284581
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 13, 2006
Last updated in NPPESJune 28, 2016
Mailing addressPo Box 97876, Phoenix, AZ 85060-7876

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