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

Allan B Willett, MD

Individual provider Psychiatry Physician · NPI 1841226321

Allan B Willett, MD is a Psychiatry Physician in Littleton, Colorado. Practices as a sole proprietor. Licensed in Colorado.

Licensed in
CO
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

9200 W Cross Dr Ste 421
Littleton, CO 80123-2239
Phone: (303) 432-5600
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence 18444 (CO)

Record details

NPI number1841226321
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJune 24, 2006
Last updated in NPPESDecember 15, 2008
Mailing address1758 Sinton Rd, Evergreen, CO 80439-4620

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