NPPES file of Aug 9, 2026

Maria Diab

Hematology (Internal Medicine) Physician · Detroit, MI

Maria Diab is a hematology (internal medicine) physician with a practice address in Detroit, Michigan, and NPI 1003259045, issued on Apr 9, 2013. Check the license (Michigan 4301103541, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1003259045
Name
Maria Diab
Primary taxonomy
Hematology (Internal Medicine) Physician 207RH0000X
License numbers
4301103541 MI
85005 GA
Self-reported in NPPES; status is on the state search
Practice location
2799 W Grand Blvd, Detroit, MI 48202
Phone
(800) 653-6568
Enumerated
Apr 9, 2013
Record last updated
Dec 22, 2022
Fax
(313) 876-1305
Medicare enrollment
Enrolled (PECOS I20170810001658); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest hematology (internal medicine) physician records → All 57 in Michigan → Look up another NPI →

Also registered at 2799 W Grand Blvd

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Jamie Therese Abad, MDInternal Medicine Physician1700573359
  2. Muhammad Abbas, MDStudent in an Organized Health Care Education/Training Program1417607474
  3. Omar Abbas, MDAnatomic Pathology & Clinical Pathology Physician1417687450
  4. Ammaar Abbasi, M.D.Student in an Organized Health Care Education/Training Program1558005157
  5. Josianne Abboud, MDAnesthesiology Physician1912342791
  6. Sai Abburi, DOStudent in an Organized Health Care Education/Training Program1124962915

Verify Maria Diab in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
    Search for license 4301103541    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Michigan license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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48% more Medicare Part D claims than the average hematology (internal medicine) physician in 2024

732 Medicare Part D claims for 143 beneficiaries, against an average of 496 among the 1,036 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 28 claims were for opioids.

  1. Maria Diab732
  2. Specialty average496

Most prescribed

  1. Ondansetron Odt110 claims
  2. Prochlorperazine Maleate92 claims
  3. Olanzapine80 claims
  4. Dexamethasone63 claims
  5. Lidocaine-Prilocaine36 claims
  6. Gabapentin26 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $1,640.00

1 payment: consulting fee; the largest payer was AstraZeneca Pharmaceuticals LP. The 721 providers of this specialty with any payment received $13,778.35 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Maria Diab$1,640
  2. Specialty average$13,778

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Henry Ford Health SystemDetroit, MI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Maria Diab among 57 hematology (internal medicine) physician records in Michigan

Maria Diab is one of 57 hematology (internal medicine) physician records with a practice address in Michigan. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 74% of them.

  • NPI issued2013 · 74% of these records are older, 23% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 79% of these records are
  • Graduated2011 · median 2007 among the 45 with a school on file
  • Record last updated2022 · 46% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Hematology (Internal Medicine) Physician providers in Michigan

There are 57 hematology (internal medicine) physician records in Michigan.

All 57 in Michigan → Every provider in Detroit → Hematology (Internal Medicine) Physician nationwide →

The 8 hematology (internal medicine) physician records with the nearest ZIP codes

  1. Hiba Jabbour-Aida, M.D.Detroit, MI 482021144682857
  2. Ahmad Mattour, M.D.Detroit, MI 482021497980635
  3. Asif Alavi, M.D.Detroit, MI 482011790952562
  4. Carter Bishop, MDDetroit, MI 482011558308049
  5. Andrew Kin, MDDetroit, MI 482011407112162
  6. Mona Vekaria, MDWyandotte, MI 481921316178007
  7. Muhammad Shurafa, M.D.Grosse Pointe Woods, MI 482361184638041
  8. Amit Mohindra, M.D.Livonia, MI 481541427029453

Common questions

What is Maria Diab's NPI number?

Maria Diab's National Provider Identifier (NPI) is 1003259045, issued on Apr 9, 2013. An NPI identifies a provider in billing; it is not a license.

Where is Maria Diab located?

The NPPES record lists a practice address at 2799 W Grand Blvd, Detroit, MI, 48202. Phone: (800) 653-6568. Providers update this record themselves, so call before visiting.

How can I verify Maria Diab's license?

NPPES lists Michigan license number 4301103541, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Maria Diab prescribe under Medicare Part D?

In 2024, Maria Diab had 732 Medicare Part D claims for 143 beneficiaries; the average among hematology (internal medicine) physician prescribers was 496. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.