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ADEL BASSILY-MARCUS MD
NPI 1326014119
Internal Medicine - Critical Care Medicine in New Haven, CT

Active since February 23, 2006PECOS EnrolledAccepts Medicare Assignment
333 CEDAR ST, NEW HAVEN, CT 06510(203) 785-6610 Get Directions Write a Review

NPPES record last updated: August 29, 2024. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Adel Bassily-marcus Md NPPES

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

ADEL BASSILY-MARCUS MD (NPI 1326014119) is an individual critical care medicine provider in New Haven, Connecticut, licensed in Connecticut (78812) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1992).

NPPES Registry Identity

NPI1326014119
Entity TypeIndividualMale
Primary Taxonomy207RC0200X
Provider Legal NameADEL BASSILY-MARCUSCredential: MD
Location Address333 CEDAR STNew Haven, CT 06510-3206
Mailing Address333 Cedar StNew Haven, CT 06510-3206 · (203) 785-6610 · Fax (203) 785-6414
Phone(203) 785-6610
Sole ProprietorYes
Medical School CMSOtherGraduated 1992
Enumeration DateFebruary 23, 2006
Last NPPES UpdateAugust 29, 2024
NPPES CertifiedAugust 28, 2024
✔ NPI 1326014119 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Critical Care MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RC0200X
License✔ Licensed in CT · 78812
Definition
An internist who diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the primary physician, the critical care staff and other specialists.
Also ListedSurgery · Surgical Critical CareTaxonomy 2086S0102X · License 78812 (CT), 221499 (NY)
333 CEDAR ST, New Haven, CT 06510
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Other Identifiers 2

Medicaid02393373CT
Medicaid1326014119CT

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.Insurance ›

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

Adel Bassily-marcus 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 ID9739287111
PECOS Enrollment IDI20241030001158
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 Adel Bassily-marcus reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Yale University
0.3 mi
Advanced Practice Midwife
100 CHURCH ST S STE 200, YALE SCHOOL OF NURSING
New Haven, CT 06519
  • Reassigned Medicare billing, Connecticut enrollment
  • 3,728 clinicians in this Medicare group
NPI 1124148887 (203) 737-5432
Icahn School Of Medicine At Mount Sinai
64 mi
Critical Care Medicine
1 GUSTAVE L LEVY PL
New York, NY 10029
  • Reassigned Medicare billing, New York enrollment
  • 329 clinicians in this Medicare group
NPI 1215488127 (212) 241-6500

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 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.

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.
166 services53 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
80 services39 patients
Ultrasonic guidance for blood vessel access 76937
Ultrasonic guidance for blood vessel access is a medical procedure where sound waves are used to create images of your blood vessels. This helps doctors to accurately locate and access the vessels for treatments or tests, ensuring safety and precision.
40 services31 patients
Insertion of non-tunneled central venous tube for infusion (5 years or older) 36556
This procedure involves placing a thin tube into a large vein, usually in the neck or chest, to administer medication or fluids. It's done under local anesthesia to minimize discomfort. It's a standard, safe procedure for individuals aged 5 and above.
27 services22 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06510 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
$138.84 typical visit price
range $60.82 – $183.10
Typical copayment $34.71 (range $15.20 – $45.77)
Most-billed visit code 99204
Established Patient
$106.68 typical visit price
range $19.76 – $149.26
Typical copayment $26.67 (range $4.94 – $37.31)
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.

DR. BRIAN CHRISTOPHER CAMBI M.D.
Internal Medicine (Interventional Cardiology)
333 CEDAR ST, DCB 3
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 785-4129
MATTHEW JOSEPH MCCONNELL M.D.
Internal Medicine (Gastroenterology)
333 CEDAR ST, YNHH INTERNAL MEDICINE-GI,SECTION OF DIGESTIVE DISEASES
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 785-7012
DR. SRI SMITHA KANAPARTHY M.D.
Anesthesiology (Pediatric Anesthesiology)
333 CEDAR ST, TMP 3
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 785-2802
SUNDES KAZMIR M.D.
Student in an Organized Health Care Education/Training Program
333 CEDAR ST, YALE-NEW HAVEN HOSPITAL DEPARTMENT OF PEDIATRICS
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 688-1947
ANASTASIA KOPTELOVA MD
Anesthesiology
333 CEDAR ST
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 688-4242
ROBERT MCNAMARA MD
Internal Medicine (Cardiovascular Disease)
333 CEDAR ST, FMP 3
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 785-4127
DR. BRANDI PARKER COTTON APRN
Nurse Practitioner (Psychiatric/Mental Health)
333 CEDAR ST
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 432-1333
SARAH ELIZABETH SCHELLHORN MD
Internal Medicine (Medical Oncology)
333 CEDAR ST
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 785-4095

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 Adel Bassily-marcus's NPI number?

The NPI number for Adel Bassily-marcus is 1326014119. It was assigned to this individual provider in the NPPES registry on February 23, 2006.

Where is Adel Bassily-marcus located?

Adel Bassily-marcus practices at 333 Cedar St, New Haven, CT 06510. The listed phone number is (203) 785-6610.

What is Adel Bassily-marcus's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.

Is Adel Bassily-marcus enrolled in Medicare?

Yes. Adel Bassily-marcus 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 Adel Bassily-marcus's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Adel Bassily-marcus reassigns Medicare benefits to 2 organizations: Yale University (New Haven, CT) and Icahn School Of Medicine At Mount Sinai (New York, NY). 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 Adel Bassily-marcus's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Adel Bassily-marcus accept?

Health plans from Anthem Blue Cross and Blue Shield list Adel Bassily-marcus 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.

When was this NPI record last updated?

The NPPES record for Adel Bassily-marcus was last updated on August 29, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.