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DR. DARYL W WILLIAMS MD
NPI 1710151394
Emergency Medicine in Stony Brook, NY

Active since April 15, 2008PECOS EnrolledAccepts Medicare Assignment
STONY BROOK UNIVERISTY HOSPITAL EM, HSC LEVEL 4 ROOM 080, STONY BROOK, NY 11794(631) 444-2754(631) 444-6031 Get Directions Write a Review

NPPES record last updated: June 11, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Daryl W Williams Md NPPES

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

DR. DARYL W WILLIAMS MD (NPI 1710151394) is an individual emergency medicine provider in Stony Brook, New York, licensed in New York (270099-1) and active in the NPI registry since April 2008. He is enrolled in Medicare PECOS, is affiliated with Long Island Community Hospital, and is a graduate of Virginia Commonwealth University, School Of Medicine (2006).

NPPES Registry Identity

NPI1710151394
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameDR. DARYL W WILLIAMSCredential: MD
Location AddressSTONY BROOK UNIVERISTY HOSPITAL EM, HSC LEVEL 4 ROOM 080Stony Brook, NY 11794-8350
Mailing Address21 Ingrid RdSetauket, NY 11733-2217 · (631) 241-1224
Phone(631) 444-2754
Fax(631) 444-6031
Sole ProprietorNo
Medical School CMSVirginia Commonwealth University, School Of MedicineGraduated 2006
Enumeration DateApril 15, 2008
Last NPPES UpdateJune 11, 2026
NPPES CertifiedJune 11, 2026
✔ NPI 1710151394 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
Licenses✔ Licensed in NY · 270099-1✔ Licensed in NC · 2009-00811
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
Also ListedInternal Medicine · Critical Care MedicineTaxonomy 207RC0200X · License 270099 (NY)
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
STONY BROOK UNIVERISTY HOSPITAL EM, Stony Brook, NY 11794
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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

Dr. Daryl W Williams Md 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 ID840425765
PECOS Enrollment IDI20131031001293
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

2

Medicare enrollment records show Daryl Williams reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Stony Brook Emergency Physicians, University Faculty Practice Corporat
1.2 mi
Emergency Medicine
SUNY @ STONY BROOK, UNIVERSITY HOSPITAL, L4, RM 515
Stony Brook, NY 11794
  • Reassigned Medicare billing, New York enrollment
  • 77 clinicians in this Medicare group
NPI 1265487672 (631) 444-2406
New York University
1,067 mi
Cardiovascular Disease
3301 QUANTUM BLVD
Boynton Beach, FL 33426
  • Reassigned Medicare billing, New York enrollment
  • 7,712 clinicians in this Medicare group
NPI 1285826438 (877) 648-2964

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 5

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.

Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
103 services51 patients
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.
92 services90 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.
44 services42 patients
Emergency department visit with low level of medical decision making 99283
An emergency department visit for a problem of moderate severity involves immediate medical attention for issues like minor fractures, burns, or high fever. The healthcare team will assess your condition, provide necessary treatment, and may suggest further tests or admission if required.
18 services18 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
17 services17 patients

Hospital Affiliations CMS Care Compare

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

Long Island Community Hospital

Acute Care Hospitals · Patchogue, NY
1/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330141
Location101 Hospital RoadPatchogue, NY 11772 · Suffolk County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11794 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
$105.06 typical visit price
range $67.40 – $203.53
Typical copayment $26.26 (range $16.85 – $50.88)
Most-billed visit code 99203
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.

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 Daryl Williams's NPI number?

The NPI number for Daryl Williams is 1710151394. It was assigned to this individual provider in the NPPES registry on April 15, 2008.

Where is Daryl Williams located?

Daryl Williams practices at Stony Brook Univeristy Hospital Em Hsc Level 4 Room 080, Stony Brook, NY 11794. The listed phone number is (631) 444-2754.

What is Daryl Williams's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Daryl Williams enrolled in Medicare?

Yes. Daryl 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 Daryl Williams's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Daryl Williams reassigns Medicare benefits to 2 organizations: Stony Brook Emergency Physicians, University Faculty Practice Corporat (Stony Brook, NY) and New York University (Boynton Beach, FL). 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 Daryl Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Daryl Williams affiliated with any hospitals?

According to CMS data, Daryl Williams is affiliated with Long Island Community Hospital.

When was this NPI record last updated?

The NPPES record for Daryl Williams 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 4 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.