NPPES file of Aug 9, 2026

Leticia De Mattei, M.D.

Internal Medicine Physician · Royal Oak, MI

Leticia De Mattei, M.D. is an internal medicine physician with a practice address in Royal Oak, Michigan, and NPI 1073355657, issued on Jun 12, 2024. Check the license (Michigan 4351052679, 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
1073355657
Name
Leticia De Mattei
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
4351052679 MI
Self-reported in NPPES; status is on the state search
Practice location
3601 W Thirteen Mile Road, Royal Oak, MI 48073
Phone
(248) 551-3000
Enumerated
Jun 12, 2024
Record last updated
Sep 18, 2024
Fax
(248) 551-9425
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest internal medicine physician records → All 5,735 in Michigan → Look up another NPI →

Verify Leticia De Mattei 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 4351052679    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

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96% fewer Medicare Part D claims than the average internal medicine physician in 2024

124 Medicare Part D claims for 29 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.

  1. Leticia De Mattei124
  2. Specialty average3,176

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.

Leticia De Mattei among 5,735 internal medicine physician records in Michigan

Leticia De Mattei, M.D. is one of 5,735 internal medicine physician records with a practice address in Michigan. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2024, is newer than 93% of them.

  • NPI issued2024 · 93% of these records are older, 4% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileNo · 62% of these records are
  • Record last updated2024 · 54% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

218 internal medicine physician records list a practice address in Royal Oak

They are 218 of the 3,887 NPPES records with a practice address in Royal Oak, and 5,735 internal medicine physician records in Michigan.

All 5,735 in Michigan → Every provider in Royal Oak → Internal Medicine Physician nationwide →

The 8 internal medicine physician records with the nearest ZIP codes

  1. Shanu Agarwal, MDRoyal Oak, MI 480731992759302
  2. Michael BarnesRoyal Oak, MI 480731588633176
  3. Robin Ehrmann, MDRoyal Oak, MI 480731992788541
  4. Ali Farhat, MDRoyal Oak, MI 480731467411363
  5. Brent FullerRoyal Oak, MI 480731871552646
  6. Joseph James, MDRoyal Oak, MI 480731154398196
  7. Frederick Karoub, MDRoyal Oak, MI 480731679554562
  8. Carl Karoub, MDRoyal Oak, MI 480731063494706

Common questions

What is Leticia De Mattei, M.D.'s NPI number?

Leticia De Mattei, M.D.'s National Provider Identifier (NPI) is 1073355657, issued on Jun 12, 2024. An NPI identifies a provider in billing; it is not a license.

Where is Leticia De Mattei, M.D. located?

The NPPES record lists a practice address at 3601 W Thirteen Mile Road, Royal Oak, MI, 48073. Phone: (248) 551-3000. Providers update this record themselves, so call before visiting.

How can I verify Leticia De Mattei, M.D.'s license?

NPPES lists Michigan license number 4351052679, 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 Leticia De Mattei, M.D. prescribe under Medicare Part D?

In 2024, Leticia De Mattei, M.D. had 124 Medicare Part D claims for 29 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.