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CASSIS GUY M.D.
NPI 1629418058
Emergency Medicine in Brooklyn, NY

Active since June 30, 2013PECOS EnrolledAccepts Medicare Assignment
450 CLARKSON AVE # 1228, BROOKLYN, NY 11203(718) 245-3318(718) 245-4799 Get Directions Write a Review

NPPES record last updated: March 24, 2020. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Mar 24, 2020, Jul 11, 2017 (2 updates tracked since 2017).

About Cassis Guy M.d. NPPES

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

CASSIS GUY M.D. (NPI 1629418058) is an individual emergency medicine provider in Brooklyn, New York, licensed in Connecticut (56269) and active in the NPI registry since June 2013. She is enrolled in Medicare PECOS and is a graduate of State University Of New York At Stony Brook, School Of Medicine (2013).

NPPES Registry Identity

NPI1629418058
Entity TypeIndividualFemale
Primary Taxonomy207P00000X
Provider Legal NameCASSIS GUYCredential: M.D.
Location Address450 CLARKSON AVE # 1228Brooklyn, NY 11203-2012
Mailing Address450 Clarkson Ave # 1228Brooklyn, NY 11203-2012 · (718) 245-3318 · Fax (718) 245-4799
Phone(718) 245-3318
Fax(718) 245-4799
Sole ProprietorNo
Medical School CMSState University Of New York At Stony Brook, School Of MedicineGraduated 2013
Enumeration DateJune 30, 2013
Last NPPES UpdateMarch 24, 20202 updates tracked since enumeration
NPPES CertifiedMarch 24, 2020
✔ NPI 1629418058 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in CT · 56269
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 ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
450 CLARKSON AVE # 1228, Brooklyn, NY 11203
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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 and accepts Medicare assignment

Cassis Guy M.d. 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 ID547532475
PECOS Enrollment IDI20170828000505
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 4

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.

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.
103 services103 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.
59 services59 patients
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.
26 services26 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.
21 services21 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11203 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.

Other Providers at the Same Location NPPES 12

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

JESSICA LOUIS KIM DO
Student in an Organized Health Care Education/Training Program
450 CLARKSON AVE # 1228
BROOKLYN, NY 11203
Kings County (718) 245-3318
PATRICIA ROSEMARY LOZANO
Student in an Organized Health Care Education/Training Program
450 CLARKSON AVE # 1228
BROOKLYN, NY 11203
Kings County (718) 245-3318
ERIC TANG MD
Emergency Medicine
450 CLARKSON AVE # 1228
BROOKLYN, NY 11203
Kings County (718) 245-3318
JULIAN GARTIA RAUL
Student in an Organized Health Care Education/Training Program
450 CLARKSON AVE # 1228
BROOKLYN, NY 11203
Kings County (718) 245-3318
JENNIFER BALLINGER MD
Emergency Medicine
450 CLARKSON AVE # 1228, DEPT OF EMERGENCY MEDICINE
BROOKLYN, NY 11203
Kings County (718) 245-4795
AUSTIN MICHAEL SHERWOOD MD
Student in an Organized Health Care Education/Training Program
450 CLARKSON AVE # 1228
BROOKLYN, NY 11203
Kings County (718) 245-3318
HANNAH SHERMAN MD
Student in an Organized Health Care Education/Training Program
450 CLARKSON AVE # 1228
BROOKLYN, NY 11203
Kings County (718) 245-3318
NICOLE BEAUMONT ANTHONY
Emergency Medicine (Emergency Medical Services)
450 CLARKSON AVE # 1228
BROOKLYN, NY 11203
Kings County (718) 245-3318

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 Cassis Guy's NPI number?

The NPI number for Cassis Guy is 1629418058. It was assigned to this individual provider in the NPPES registry on June 30, 2013.

Where is Cassis Guy located?

Cassis Guy practices at 450 Clarkson Ave # 1228, Brooklyn, NY 11203. The listed phone number is (718) 245-3318.

What is Cassis Guy's specialty?

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

Is Cassis Guy enrolled in Medicare?

Yes. Cassis Guy 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.

When was this NPI record last updated?

The NPPES record for Cassis Guy was last updated on March 24, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years 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.