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NATHALIA HOMOLKA WILLIAMS APRN
NPI 1447718887
Nurse Practitioner - Family in Ogden, UT

Active since March 05, 2019PECOS EnrolledAccepts Medicare Assignment
95.7/100
CMS Quality Rating

NPPES record last updated: December 11, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Dec 11, 2022, Mar 5, 2019 (2 updates tracked since 2019).

About Nathalia Homolka Williams Aprn NPPES

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

NATHALIA HOMOLKA WILLIAMS APRN (NPI 1447718887) is an individual family provider in Ogden, Utah, licensed in Utah (7236490-4405) and active in the NPI registry since March 2019. She is enrolled in Medicare PECOS, is affiliated with University Of Utah Hospitals And Clinics, and is a graduate of Other (2018).

NPPES Registry Identity

NPI1447718887
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameNATHALIA HOMOLKA WILLIAMSCredential: APRN
Location Address124 W 4TH STOgden, UT 84404-4019
Mailing Address124 W 4th StOgden, UT 84404-4019 · (801) 814-2935
Phone(801) 814-2935
Sole ProprietorYes
Medical School CMSOtherGraduated 2018
Enumeration DateMarch 5, 2019
Last NPPES UpdateDecember 11, 20222 updates tracked since enumeration
NPPES CertifiedDecember 11, 2022
✔ NPI 1447718887 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
License✔ Licensed in UT · 7236490-4405
124 W 4TH ST, Ogden, UT 84404
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Select Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Nathalia Homolka Williams Aprn 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 ID7517291115
PECOS Enrollment IDI20190702001897
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.

Medicare Billing Reassignments

3

Medicare enrollment records show Nathalia Williams reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

University Of Utah Community Physicians Group
12 mi
Family Medicine
1492 W ANTELOPE DR STE 150
Layton, UT 84041
  • Reassigned Medicare billing, Utah enrollment
  • 295 clinicians in this Medicare group
NPI 1356745061 (801) 776-7804
Emergency Physicians Integrated Care, LLC
34 mi
Emergency Medicine
1050 E SOUTH TEMPLE
Salt Lake City, UT 84102
  • Reassigned Medicare billing, Utah enrollment
  • 316 clinicians in this Medicare group
NPI 1578598199 (801) 350-4111
Signify Health, LLC
1,012 mi
General Practice
4055 VALLEY VIEW LN STE 700
Dallas, TX 75244
  • Reassigned Medicare billing, Utah enrollment
  • 145 clinicians in this Medicare group
NPI 1689158487 (469) 466-7007

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 3

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.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
52 services51 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
30 services28 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010
A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.
21 services21 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

University Of Utah Hospitals And Clinics

Acute Care Hospitals · Salt Lake City, UT
5/5 CMS rating
OwnershipGovernment - State
CMS Certification Number460009
Location50 North Medical DriveSalt Lake City, UT 84132 · Salt Lake County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 84404 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
$84.41 typical visit price
range $54.34 – $166.03
Typical copayment $21.10 (range $13.58 – $41.50)
Most-billed visit code 99203
Established Patient
$96.35 typical visit price
range $17.23 – $135.20
Typical copayment $24.08 (range $4.30 – $33.80)
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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

95.7/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality92.19
Promoting Interoperability100
Improvement Activities40

Referred Medical Equipment & Supplies CMS DME claims

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

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
1 supplier15 claims15 services$92.19 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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 Nathalia Williams's NPI number?

The NPI number for Nathalia Williams is 1447718887. It was assigned to this individual provider in the NPPES registry on March 5, 2019.

Where is Nathalia Williams located?

Nathalia Williams practices at 124 W 4th St, Ogden, UT 84404. The listed phone number is (801) 814-2935.

What is Nathalia Williams's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is Nathalia Williams enrolled in Medicare?

Yes. Nathalia 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.

Which organizations bill Medicare for Nathalia Williams's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Nathalia Williams reassigns Medicare benefits to 3 organizations: University Of Utah Community Physicians Group (Layton, UT), Emergency Physicians Integrated Care, LLC (Salt Lake City, UT) and Signify Health, LLC (Dallas, TX). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Nathalia Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Nathalia Williams accept?

Health plans from Select Health list Nathalia Williams as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Nathalia Williams affiliated with any hospitals?

According to CMS data, Nathalia Williams is affiliated with University Of Utah Hospitals And Clinics.

When was this NPI record last updated?

The NPPES record for Nathalia Williams was last updated on December 11, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.