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

William L Phelps II, MD

Individual provider Geriatric Medicine (Internal Medicine) Physician · NPI 1578515458

William L Phelps II, MD is a Geriatric Medicine (Internal Medicine) Physician in Green Valley, 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.

See every abbreviation used in this directory →

Practice location Address checks out

101 W Duval Rd Ste 101
Green Valley, AZ 85614-5280
Phone: (520) 625-2950
Fax: (520) 625-2997
Show map & directions

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

Specialties & licences

Geriatric Medicine (Internal Medicine) Physician (primary) Taxonomy 207RG0300X · Licence 24727 (AZ)

Record details

NPI number1578515458
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 17, 2006
Last updated in NPPESNovember 13, 2007

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