MRS. SELINA A WILLIAMS RN, FNP
NPI 1144538836
Clinical Nurse Specialist - Family Health in Islip, NY

Active since September 16, 2010PECOS EnrolledAccepts Medicare Assignment
91.25/100
CMS Quality Rating

NPPES record last updated: July 14, 2015. Verified against the NPPES registry weekly; last sync: July 19, 2026.

About Mrs. Selina A Williams Rn, Fnp NPPES

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

MRS. SELINA A WILLIAMS RN, FNP (NPI 1144538836) is an individual family health provider in Islip, New York, licensed in New York (F336693) and active in the NPI registry since September 2010. She is enrolled in Medicare PECOS and is a graduate of Other (2011).

NPPES Registry Identity

NPI1144538836
Entity TypeIndividualFemale
Primary Taxonomy364SF0001X
Provider Legal NameMRS. SELINA A WILLIAMSCredential: RN, FNP
Location Address712 MAIN STIslip, NY 11751-3620
Mailing Address712 Main StIslip, NY 11751-3620 · (631) 666-3939 · Fax (631) 730-3467
Sole ProprietorYes
Medical School CMSOtherGraduated 2011
Enumeration DateSeptember 16, 2010
Last NPPES UpdateJuly 14, 2015
NPI 1144538836 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyClinical Nurse Specialist · Family HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code364SF0001X
License Licensed in NY · F336693
Also ListedRegistered Nurse · SchoolTaxonomy 163WS0200X · License 562964 (NY)
712 MAIN ST, Islip, NY 11751

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

Mrs. Selina A Williams Rn, Fnp 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 ID6406072073
PECOS Enrollment IDI20150506000612
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 2

Services this provider delivered to Medicare fee-for-service patients, from the 2024 & 2026 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, 30-39 minutes 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.
38 services29 patients
New patient office or other outpatient visit, 45-59 minutes 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.
30 services30 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11751 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
$154.28 typical visit price
range $67.40 – $203.53
Typical copayment $38.57 (range $16.85 – $50.88)
Most-billed visit code 99204
Established Patient
$117.62 typical visit price
range $21.66 – $164.45
Typical copayment $29.40 (range $5.41 – $41.11)
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.

91.25/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Quality74.92
Promoting Interoperability91.67
Improvement Activities40

Other Providers at the Same Location NPPES 19

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

Psychiatry & Neurology (Neurology)
712 MAIN ST
ISLIP, NY 11751
Psychiatry & Neurology (Neurology)
712 MAIN ST
ISLIP, NY 11751
Nurse Practitioner (Adult Health)
712 MAIN ST
ISLIP, NY 11751
Pain Medicine (Pain Medicine)
712 MAIN ST
ISLIP, NY 11751
Psychiatry & Neurology (Neurology)
712 MAIN ST
ISLIP, NY 11751
Psychiatry & Neurology (Neurology)
712 MAIN ST
ISLIP, NY 11751
Psychiatry & Neurology (Neurology)
712 MAIN ST
ISLIP, NY 11751
Psychiatry & Neurology (Neurology)
712 MAIN ST
ISLIP, NY 11751

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1144538836, enumerated as an "individual" on September 16, 2010.

The provider is located at 712 MAIN ST ISLIP, NY 11751 and the phone number is (631) 666-3939.

Clinical Nurse Specialist with taxonomy code 364SF0001X and a focus in Family Health.

The provider might be accepting Accepts: Blue Cross and Blue Shield of Texas. Please consult your insurance carrier or call the provider to verify.