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ALLISON MARGARET O'LEARY WILLIAMS MSN, APRN, NP-C
NPI 1902376007
Nurse Practitioner in Greeley, CO

Active since November 30, 2018PECOS EnrolledAccepts Medicare Assignment
1010 A ST, GREELEY, CO 80631(970) 313-0400(970) 313-0404 Get Directions Write a Review

NPPES record last updated: June 30, 2021. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jun 30, 2021, Dec 28, 2018, Nov 30, 2018 (3 updates tracked since 2018).

About Allison Margaret O'leary Williams Msn, Aprn, Np-c NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ALLISON MARGARET O'LEARY WILLIAMS MSN, APRN, NP-C (NPI 1902376007) is an individual nurse practitioner in Greeley, Colorado, licensed in Colorado (994420) and active in the NPI registry since November 2018. She is enrolled in Medicare PECOS and is a graduate of Other (2018).

NPPES Registry Identity

NPI1902376007
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameALLISON MARGARET O'LEARY WILLIAMSCredential: MSN, APRN, NP-C
Location Address1010 A STGreeley, CO 80631-2021
Mailing Address2930 11th AveEvans, CO 80620-1011 · (970) 350-4606 · Fax (970) 313-0404
Phone(970) 313-0400
Fax(970) 313-0404
Sole ProprietorNo
Medical School CMSOtherGraduated 2018
Enumeration DateNovember 30, 2018
Last NPPES UpdateJune 30, 20213 updates tracked since enumeration
NPPES CertifiedJune 30, 2021
✔ NPI 1902376007 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363L00000X
License✔ Licensed in CO · 994420
Definition
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
1010 A ST, Greeley, CO 80631
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Allison Margaret O'leary Williams Msn, Aprn, Np-c is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9638417652
PECOS Enrollment IDI20190215002059
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Hemoglobin a1c level 83036
Hemoglobin A1c (HbA1c) is a test that measures your average blood sugar level over the past 2-3 months. It's used to monitor how well diabetes is being controlled. High levels may indicate that your diabetes treatment plan needs adjustment.
20 services17 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 80631 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$89.43 typical visit price
range $58.06 – $174.82
Typical copayment $22.35 (range $14.51 – $43.70)
Most-billed visit code 99203
Established Patient
$102.03 typical visit price
range $18.88 – $142.79
Typical copayment $25.50 (range $4.72 – $35.69)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Albuterol, up to 2.5 mg and ipratropium bromide, up to 0.5 mg, fda-approved final product, non-compounded, administered through dme J7620
DME-Drugs Administered Through DME · category DG006N
2 suppliers14 claims1,518 services$0.10 avg. paid by Medicare
Pharmacy dispensing fee for inhalation drug(s); per 30 days Q0513
DME-Other DME · category DE000N
1 supplier11 claims11 services$25.94 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 16

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

LAUREN CONNER PA-C
Physician Assistant (Medical)
1010 A ST
GREELEY, CO 80631
Weld County (970) 313-0400
JUAN CARLOS MEDINA SANCHEZ FNP
Nurse Practitioner (Family)
1010 A ST
GREELEY, CO 80631
Weld County (970) 313-0400
DR. PATTY LEE BEECROFT M.D.
Family Medicine
1010 A ST
GREELEY, CO 80631
Weld County (970) 313-0400
CHELSEA MAIER PA-C
Physician Assistant
1010 A ST
GREELEY, CO 80631
Weld County (970) 313-0400
SUNRISE COMMUNITY HEALTH
Clinic/Center (Federally Qualified Health Center (FQHC))
1010 A ST
GREELEY, CO 80631
Weld County (970) 313-0400
DR. TERESA DIANE LOFTIN M.D.
Family Medicine
1010 A ST
GREELEY, CO 80631
Weld County (970) 313-0400
SAMUEL WAYNE DAVIS MD
Family Medicine
1010 A ST
GREELEY, CO 80631
Weld County (970) 313-0400
MATTHEW HUBBARD
Physician Assistant (Medical)
1010 A ST
GREELEY, CO 80631
Weld County (970) 313-0400

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Allison Williams's NPI number?

The NPI number for Allison Williams is 1902376007. It was assigned to this individual provider in the NPPES registry on November 30, 2018.

Where is Allison Williams located?

Allison Williams practices at 1010 A St, Greeley, CO 80631. The listed phone number is (970) 313-0400.

What is Allison Williams's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Is Allison Williams enrolled in Medicare?

Yes. Allison Williams is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Allison Williams was last updated on June 30, 2021. NPI Profile syncs with the weekly NPPES data releases published by CMS.