Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Maria Diab

Individual provider Hematology & Oncology Physician · NPI 1003259045

Maria Diab practises Emergency Medicine in Detroit, Michigan. Qualified in 2011, 15 years ago. Practices with Henry Ford Health System, a 2,540-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Georgia and Michigan.

Years since qualifying
15
Licensed in
GA, MI
In the registry since
2013
Specialties on file
4
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Practice location Address checks out

2799 W Grand Blvd
Detroit, MI 48202-2608
Phone: (800) 653-6568
Fax: (313) 876-1305
Show map & directions

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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 4201 Saint Antoine St, Detroit, MI 48201-2153 — (313) 745-7999

Specialties & licences

Hematology (Internal Medicine) Physician (primary) Taxonomy 207RH0000X · Licence 4301103541 (MI)
Hematology & Oncology Physician Taxonomy 207RH0003X · Licence 85005 (GA)
Medical Oncology Physician Taxonomy 207RX0202X · Licence 4301103541 (MI)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1003259045
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorNo
NPI enumeratedApril 9, 2013
Last updated in NPPESDecember 22, 2022
Certification dateDecember 22, 2022

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyEMERGENCY MEDICINE
Medical schoolOTHER
Graduated 2011 (15 years in practice)
Group practice Henry Ford Health System — 2540 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients109
Services billed 512 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $482 5 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Henry Ford Health System

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2540 clinicians in the practice; 12 are shown here.

Other providers in Detroit