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CLARISSA LAUREN WILLIAMS
NPI 1619648334
Nurse Practitioner - Family in Chicago, IL

Active since September 22, 2021PECOS Enrolled
87.08/100
CMS Quality Rating
1801 W TAYLOR ST STE 3D, CHICAGO, IL 60612(866) 600-2273 Get Directions Write a Review

NPPES record last updated: February 6, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Feb 6, 2025, Oct 19, 2022, Nov 2, 2021 and 1 more (4 updates tracked since 2021).

About Clarissa Lauren Williams NPPES

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

CLARISSA LAUREN WILLIAMS (NPI 1619648334) is an individual family provider in Chicago, Illinois, licensed in Illinois (209024051) and active in the NPI registry since September 2021. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1619648334
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameCLARISSA LAUREN WILLIAMS
Location Address1801 W TAYLOR ST STE 3DChicago, IL 60612-4795
Mailing Address31 Sibley St Ste AHammond, IN 46320-1725 · (219) 802-8800
Phone(866) 600-2273
Sole ProprietorNo
Enumeration DateSeptember 22, 2021
Last NPPES UpdateFebruary 6, 20254 updates tracked since enumeration
NPPES CertifiedFebruary 6, 2025
✔ NPI 1619648334 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
Licenses✔ Licensed in IL · 209024051✔ Licensed in IN · 71011689A
Also ListedRegistered NurseTaxonomy 163W00000X · License 28213693A (IN)
1801 W TAYLOR ST STE 3D, Chicago, IL 60612
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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 (PECOS)

Clarissa Lauren Williams is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 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.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
44 services36 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
21 services21 patients
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.
21 services20 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60612 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
$94.06 typical visit price
range $60.08 – $183.39
Typical copayment $23.51 (range $15.02 – $45.84)
Most-billed visit code 99203
Established Patient
$105.70 typical visit price
range $18.97 – $148.12
Typical copayment $26.42 (range $4.74 – $37.03)
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.

87.08/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality70.79
Promoting Interoperability100
Improvement Activities40
Cost52.82

Other Providers at the Same Location NPPES

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

AYEMA HAQUE
Internal Medicine (Rheumatology)
1801 W TAYLOR ST STE 3D
CHICAGO, IL 60612
Cook County (312) 413-5569

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 Clarissa Williams's NPI number?

The NPI number for Clarissa Williams is 1619648334. It was assigned to this individual provider in the NPPES registry on September 22, 2021.

Where is Clarissa Williams located?

Clarissa Williams practices at 1801 W Taylor St Ste 3D, Chicago, IL 60612. The listed phone number is (866) 600-2273.

What is Clarissa Williams's specialty?

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

Is Clarissa Williams enrolled in Medicare?

Yes. Clarissa Williams is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Clarissa Williams was last updated on February 6, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.