KAREN MATULONIS WILLIAMS CRNP
NPI 1457303141
Nurse Practitioner in Allentown, PA

Active since May 17, 2006PECOS EnrolledAccepts Medicare Assignment
1230 S CEDAR CREST BLVD STES 301, 302, 304, ALLENTOWN, PA 18103(610) 432-4529(610) 432-2206 Get Directions Write a Review

NPPES record last updated: June 2, 2022. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Karen Matulonis Williams Crnp NPPES

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

KAREN MATULONIS WILLIAMS CRNP (NPI 1457303141) is an individual nurse practitioner in Allentown, Pennsylvania, licensed in Pennsylvania (VP006049B) and active in the NPI registry since May 2006. She is enrolled in Medicare PECOS, is affiliated with Lehigh Valley Hospital, and is a graduate of Other (1986).

NPPES Registry Identity

NPI1457303141
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameKAREN MATULONIS WILLIAMSCredential: CRNP
Location Address1230 S CEDAR CREST BLVD STES 301, 302, 304Allentown, PA 18103-6212
Mailing Address1230 S Cedar Crest Blvd Ste 301Allentown, PA 18103-6212 · (610) 432-4529 · Fax (610) 432-2206
Fax(610) 432-2206
Sole ProprietorNo
Medical School CMSOtherGraduated 1986
Enumeration DateMay 17, 2006
Last NPPES UpdateJune 2, 2022
NPPES CertifiedJune 2, 2022
NPI 1457303141 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363L00000X
License Licensed in PA · VP006049B
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.

Also ListedNurse Practitioner · FamilyTaxonomy 363LF0000X · License VP006049B (PA)
1230 S CEDAR CREST BLVD STES 301, 302, 304, Allentown, PA 18103

Other Names 1

Former Name (1)Karen L Matulonis Crnp

Accepted Insurance

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

Karen Matulonis Williams Crnp 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 ID8426137183
PECOS Enrollment IDI20080506000591
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.

Dialysis services, 4 or more physician visits per month (20 years or older) 90960
Dialysis is a treatment that filters and purifies your blood using a machine. It helps keep your fluids and electrolytes in balance when the kidneys can't do their job. This service includes 4 or more visits per month with a physician to monitor your health and adjust your treatment as needed.
28 services26 patients

Hospital Affiliations CMS Care Compare

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

Lehigh Valley Hospital

Acute Care Hospitals · Allentown, PA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number390133
Location1200 South Cedar Crest BoulevardAllentown, PA 18103 · Lehigh County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 18103 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
$84.88 typical visit price
range $54.64 – $166.87
Typical copayment $21.22 (range $13.66 – $41.71)
Most-billed visit code 99203
Established Patient
$96.82 typical visit price
range $17.33 – $135.84
Typical copayment $24.20 (range $4.33 – $33.96)
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.

Other Providers at the Same Location NPPES 20

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

Internal Medicine (Nephrology)
1230 S CEDAR CREST BLVD STES 301, 302, 304
ALLENTOWN, PA 18103
Internal Medicine (Nephrology)
1230 S CEDAR CREST BLVD STES 301, 302, 304
ALLENTOWN, PA 18103
Internal Medicine (Nephrology)
1230 S CEDAR CREST BLVD STES 301, 302, 304
ALLENTOWN, PA 18103
Internal Medicine (Nephrology)
1230 S CEDAR CREST BLVD STES 301, 302, 304
ALLENTOWN, PA 18103
Internal Medicine (Nephrology)
1230 S CEDAR CREST BLVD STES 301, 302, 304
ALLENTOWN, PA 18103
Internal Medicine (Nephrology)
1230 S CEDAR CREST BLVD STES 301, 302, 304
ALLENTOWN, PA 18103
Physician Assistant (Medical)
1230 S CEDAR CREST BLVD STES 301, 302, 304
ALLENTOWN, PA 18103
Internal Medicine (Nephrology)
1230 S CEDAR CREST BLVD STES 301, 302, 304
ALLENTOWN, PA 18103

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 Karen Williams's NPI number?

The NPI number for Karen Williams is 1457303141. It was assigned to this individual provider in the NPPES registry on May 17, 2006. The provider is also known as Karen L Matulonis Crnp.

Where is Karen Williams located?

Karen Williams practices at 1230 S Cedar Crest Blvd Stes 301, 302, 304, Allentown, PA 18103. The listed phone number is (610) 432-4529.

What is Karen Williams's specialty?

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

Is Karen Williams enrolled in Medicare?

Yes. Karen 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.

What insurance does Karen Williams accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Buckeye Health Plan list Karen 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 Karen Williams affiliated with any hospitals?

According to CMS data, Karen Williams is affiliated with Lehigh Valley Hospital.

When was this NPI record last updated?

The NPPES record for Karen Williams was last updated on June 2, 2022. NPI Profile syncs with the weekly NPPES data releases published by CMS.