NPIMap

Individual provider Active NPI

Mariam El-Ashmawy, MD, PHD

  • Hematology & Oncology Physician
  • Dallas, TX
National Provider Identifier
1750816641
Registry record updated Mar 9, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Hematology & Oncology PhysicianTaxonomy code 207RH0003X
License
W3253 Issued in TX
Practice address
6202 Harry Hines Blvd
Dallas, TX 75235
Phone
(214) 645-3999
NPI assigned
Apr 27, 2017
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Mar 9, 2026

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Hematology & Oncology Physician 207RH0003X W3253 TX Primary

Addresses

Primary practice location

6202 Harry Hines Blvd
Dallas, TX 75235

Mailing address

PO Box 845347
Dallas, TX 75284-7208

Other practice location 1

161 Fort Washington Ave
New York, NY 10032-3729
Phone (212) 305-5098

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in NY, TX2 enrollments
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20230727002693 NY Practitioner - Medical Oncology 7012251044 Reassigns benefits to 1 organization
I20260313002832 TX Practitioner - Hematology/Oncology 7012251044 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Hematology/Oncology
Education
Other, 2017
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
University of Texas Southwestern Medical Center at DallasGroup PAC ID 0648188250, 3,156 clinicians
Trustees of Columbia University in the City of New YorkGroup PAC ID 8527972546, 2,262 clinicians

Practice addresses (Care Compare)

6202 Harry Hines Blvd
Dallas, TX 75235-5202
Phone (469) 488-7000

622 W 168TH St
New York, NY 10032-3720
Phone (212) 305-9876

Hospital & facility affiliations

  • Ut of Texas Southwestern University Hospital - William P. Clements Jr. Hospital, Dallas, TX, CCN 450044
  • New York-Presbyterian Hospital Hospital, New York, NY, CCN 330101

Merit-based Incentive Payment System (MIPS)

Final score
100 of 100Reported as apm
Quality
85.32
Promoting interoperability
100
Improvement activities
40

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine, Doctor of Philosophy

State licenses

LicenseStateTypeSpecialty
W3253TXMDHematology & Oncology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
University of Texas Southwestern Medical Center at Dallas CurrentSince Feb 4, 2026 Accepting new patients
The University of Texas Southwestern Medical Center at Dallas CurrentSince Feb 4, 2026 Accepting new patients
Trustees of Columbia University in the City of New York CurrentSince Jun 28, 2023 Accepting new patients
Trustees of Columbia University in the City of New York CurrentSince Jun 28, 2023 Accepting new patients
Trustees of Columbia University in the Department of Otolaryngology Past Accepting new patients
The New York and Presbyterian Hospital Past Accepting new patients

Locations

630 W 168th St
#4
New York, NY 10032
Phone (212) 305-6387

622 W 168th St
New York, NY 10032
Phone (212) 305-4931

161 Fort Washington Ave
New York, NY 10032
Phone (212) 305-8559

Networks

  • Healthfirst Medicare Network H3359
  • Healthfirst Medicare Network H5989
  • Healthfirst Medicare Network H9678
  • Healthfirst Medicare Network H1722

Interoperability endpoints

  • FHIR API: https://epicproxy-pub.et1089.epichosted.com/FHIRProxy/api/FHIR/R4/
  • Direct secure messaging: mae9151@direct.nyp.org
  • FHIR API: https://epicproxy-pub.et1089.epichosted.com/FHIRProxy/api/FHIR/DSTU2/

Organizations & group practices 6

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

Hospital & facility affiliations 6

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1493251200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1773014400000",
    "number": "1750816641",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 845347",
            "city": "DALLAS",
            "state": "TX",
            "postal_code": "752847208"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "6202 HARRY HINES BLVD",
            "city": "DALLAS",
            "state": "TX",
            "postal_code": "75235",
            "telephone_number": "214-645-3999"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "161 Fort Washington Ave",
            "address_purpose": "LOCATION",
            "city": "New York",
            "state": "NY",
            "postal_code": "100323729",
            "country_code": "US",
            "telephone_number": "212-305-5098",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "EL-ASHMAWY",
        "first_name": "MARIAM",
        "name_prefix": "Dr.",
        "credential": "MD, PHD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2017-04-27",
        "last_updated": "2026-03-09",
        "certification_date": "2026-03-09",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RH0003X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology & Oncology",
            "state": "TX",
            "license": "W3253",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Dallas, TX

Sources for this page

Verify at the official NPI Registry.