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NATALIE LOUISE MCWILLIAMS PA-C
NPI 1437751393
Physician Assistant - Medical in Mars, PA

Active since November 14, 2020PECOS EnrolledAccepts Medicare Assignment
77.5/100
CMS Quality Rating

NPPES record last updated: June 11, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Dec 27, 2025, Aug 20, 2024, Jul 18, 2024 and 3 more (6 updates tracked since 2020).

About Natalie Louise Mcwilliams Pa-c NPPES

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

NATALIE LOUISE MCWILLIAMS PA-C (NPI 1437751393) is an individual medical provider in Mars, Pennsylvania, licensed in Pennsylvania (MA061915) and active in the NPI registry since November 2020. She is enrolled in Medicare PECOS, is affiliated with Washington Hospital, The, and is a graduate of Other (2020).

NPPES Registry Identity

NPI1437751393
Entity TypeIndividualFemale
Primary Taxonomy363AM0700X
Provider Legal NameNATALIE LOUISE MCWILLIAMSCredential: PA-C
Location Address123 GRAND AVEMars, PA 16046-3410
Mailing Address123 Grand AveMars, PA 16046-3410 · (724) 625-3171
Phone(724) 625-3171
Sole ProprietorNo
Medical School CMSOtherGraduated 2020
Enumeration DateNovember 14, 2020
Last NPPES UpdateJune 11, 20266 updates tracked since enumeration
NPPES CertifiedJune 11, 2026
✔ NPI 1437751393 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysician Assistant · MedicalPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363AM0700X
License✔ Licensed in PA · MA061915
123 GRAND AVE, Mars, PA 16046
Open in Google Maps ↗

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

Natalie Louise Mcwilliams Pa-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 ID7517379712
PECOS Enrollment IDI20201211001795
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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
12 services11 patients

Hospital Affiliations CMS Care Compare 2

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

Washington Hospital, The

Acute Care Hospitals · Washington, PA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number390042
Location155 Wilson AvenueWashington, PA 15301 · Washington County
Emergency services Birthing friendly

St Clair Hospital

Acute Care Hospitals · Pittsburgh, PA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number390228
Location1000 Bower Hill RoadPittsburgh, PA 15243 · Allegheny County
Emergency services Birthing friendly

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.

77.5/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality68.61
Promoting Interoperability100
Improvement Activities40
Cost56.4

Other Providers at the Same Location NPPES 2

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

UPMC COMMUNITY MEDICINE INC
Non-Pharmacy Dispensing Site
123 GRAND AVE
MARS, PA 16046
Butler County (724) 625-3171
ABIGAIL RENEE SPRIGLER PA-C
Physician Assistant
123 GRAND AVE
MARS, PA 16046
Butler County (724) 625-3171

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 Natalie Mcwilliams's NPI number?

The NPI number for Natalie Mcwilliams is 1437751393. It was assigned to this individual provider in the NPPES registry on November 14, 2020.

Where is Natalie Mcwilliams located?

Natalie Mcwilliams practices at 123 Grand Ave, Mars, PA 16046. The listed phone number is (724) 625-3171.

What is Natalie Mcwilliams's specialty?

The primary specialty registered for this NPI is Physician Assistant, specializing in Medical, with taxonomy code 363AM0700X.

Is Natalie Mcwilliams enrolled in Medicare?

Yes. Natalie Mcwilliams 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.

Is Natalie Mcwilliams affiliated with any hospitals?

According to CMS data, Natalie Mcwilliams is affiliated with Washington Hospital, The and St Clair Hospital.

When was this NPI record last updated?

The NPPES record for Natalie Mcwilliams was last updated on June 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.