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

Allison Margaret O'Leary Williams, MSN, APRN, NP-C

Individual provider Nurse Practitioner · NPI 1902376007

Allison Margaret O'Leary Williams, MSN, APRN, NP-C is a Nurse Practitioner in Greeley, Colorado. Qualified in 2018, 8 years ago. Practices with Sunrise Community Health, a 51-clinician group and accepts Medicare assignment. Licensed in Colorado.

Years since qualifying
8
Licensed in
CO
In the registry since
2018
What do these letters mean?
MSN — Master of Science in Nursing
A graduate nursing degree, usually held alongside an advanced practice licence.
APRN — Advanced Practice Registered Nurse
The umbrella licence covering nurse practitioners, midwives, anaesthetists and clinical nurse specialists.
NP-C — Nurse Practitioner, Certified
A nurse practitioner certified by the AANP.

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Practice location Address checks out

1010 A St
Greeley, CO 80631-2021
Phone: (970) 313-0400
Fax: (970) 313-0404
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Nurse Practitioner (primary) Taxonomy 363L00000X · Licence 994420 (CO)

Record details

NPI number1902376007
Entity typeIndividual (Type 1)
GenderFemale
Credentials MSN , APRN , NP-C
Sole proprietorNo
NPI enumeratedNovember 30, 2018
Last updated in NPPESJune 30, 2021
Certification dateJune 30, 2021

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2018 (8 years in practice)
Group practice Sunrise Community Health — 51 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

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