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DR. MOHAMED SAEFELDIN HASABELGAB ELHAJ MD
NPI 1285375170
Internal Medicine in Brooklyn, NY

Active since April 05, 2022PECOS EnrolledAccepts Medicare Assignment
450 CLARKSON AVE, BROOKLYN, NY 11203(718) 270-8867 Get Directions Write a Review

NPPES record last updated: January 31, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jan 31, 2026, Apr 5, 2025, Apr 6, 2022 (3 updates tracked since 2022).

About Dr. Mohamed Saefeldin Hasabelgab Elhaj Md NPPES

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

DR. MOHAMED SAEFELDIN HASABELGAB ELHAJ MD (NPI 1285375170) is an individual internal medicine provider in Brooklyn, New York, licensed in New York (340783-01) and active in the NPI registry since April 2022. He is enrolled in Medicare PECOS, is affiliated with Mount Sinai Beth Israel, and maintains a secondary practice location in Brooklyn.

NPPES Registry Identity

NPI1285375170
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. MOHAMED SAEFELDIN HASABELGAB ELHAJCredential: MD
Location Address450 CLARKSON AVEBrooklyn, NY 11203-2012
Mailing Address345 Lenox Rd Apt 2cBrooklyn, NY 11226-5270 · (480) 506-9104
Phone(718) 270-8867
Sole ProprietorNo
Medical School CMSOtherGraduated 2019
Enumeration DateApril 5, 2022
Last NPPES UpdateJanuary 31, 20263 updates tracked since enumeration
NPPES CertifiedJanuary 31, 2026
✔ NPI 1285375170 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in NY · 340783-01
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
450 CLARKSON AVE, Brooklyn, NY 11203
Open in Google Maps ↗

Secondary Practice Location 1

Location 13201 Kings HwyBrooklyn, NY 11234-2625 · Phone (718) 951-2851

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. Mohamed Saefeldin Hasabelgab Elhaj 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 ID9830679661
PECOS Enrollment IDI20260219000779
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 Reassignment

Medicare enrollment records show Mohamed Elhaj reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Icahn School Of Medicine At Mount Sinai
2.5 mi
Internal Medicine
3201 KINGS HWY
Brooklyn, NY 11234
  • Reassigned Medicare billing, New York enrollment
  • 101 clinicians in this Medicare group
NPI 1780111484 (718) 951-2851

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Hospital Affiliations CMS Care Compare

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

Mount Sinai Beth Israel

Acute Care Hospitals · New York, NY
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330169
LocationFirst Avenue At 16th StreetNew York, NY 10003 · New York County
Emergency services

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
$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.

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.

SUNY DOWNSTATE MEDICAL CENTER UHB
Obstetrics & Gynecology
450 CLARKSON AVE
BROOKLYN, NY 11203
Kings County (718) 363-2908
UNIVERSITY PHYSICIANS OF BROOKLYN
Internal Medicine (Gastroenterology)
450 CLARKSON AVE, SUITE A
BROOKLYN, NY 11203
Kings County (718) 270-1112
SNEHALATA R TOPGI MD
Emergency Medicine
450 CLARKSON AVE
BROOKLYN, NY 11203
Kings County (718) 270-3295
DR. MARYAM NOORI KOLOORI M.D.
Student in an Organized Health Care Education/Training Program
450 CLARKSON AVE, SUNY DOWNSTATE MEDICAL CENTER
BROOKLYN, NY 11203
Kings County (412) 737-3789
DR. VIVEK YADAV MD
Internal Medicine (Pulmonary Disease)
450 CLARKSON AVE
BROOKLYN, NY 11203
Kings County (718) 270-3302
DR. DANIEL BEEGAN MD
Family Medicine
450 CLARKSON AVE, MSC 67
BROOKLYN, NY 11203
Kings County (718) 270-4096
ELIEZER LEVITANSKY DO
Emergency Medicine
450 CLARKSON AVE
BROOKLYN, NY 11203
Kings County (245) 331-8718
MIGUEL ANGEL BARRIOS MD
Emergency Medicine
450 CLARKSON AVE
BROOKLYN, NY 11203
Kings County (718) 245-4798

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 Mohamed Elhaj's NPI number?

The NPI number for Mohamed Elhaj is 1285375170. It was assigned to this individual provider in the NPPES registry on April 5, 2022.

Where is Mohamed Elhaj located?

Mohamed Elhaj practices at 450 Clarkson Ave, Brooklyn, NY 11203. The listed phone number is (718) 270-8867.

What is Mohamed Elhaj's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Mohamed Elhaj enrolled in Medicare?

Yes. Mohamed Elhaj 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 organization bills Medicare for Mohamed Elhaj's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mohamed Elhaj reassigns Medicare benefits to Icahn School Of Medicine At Mount Sinai (Brooklyn, NY). The 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 Mohamed Elhaj's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Mohamed Elhaj affiliated with any hospitals?

According to CMS data, Mohamed Elhaj is affiliated with Mount Sinai Beth Israel.

When was this NPI record last updated?

The NPPES record for Mohamed Elhaj was last updated on January 31, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.