NPPES file of Aug 9, 2026

Gregory Desrosiers, MD

Internal Medicine Physician · Naples, FL

Gregory Desrosiers, MD is an internal medicine physician with a practice address in Naples, Florida, and NPI 1104453489, issued on Mar 25, 2020. Check the license (Florida ME163528, as entered in NPPES) on the Florida health license search; 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
1104453489
Name
Gregory Desrosiers
Credential
MD
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
ME163528 FL
Self-reported in NPPES; status is on the state search
Practice location
311 9TH St N Ste 300, Naples, FL 34102
Phone
(239) 624-0940
Enumerated
Mar 25, 2020
Record last updated
Jul 25, 2023
Fax
(239) 624-0941
Medicare enrollment
Enrolled (PECOS I20251014004727); accepts Medicare assignment
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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Also registered at 311 9TH St N Ste 300

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

  1. Alaa Almallouhi, MDStudent in an Organized Health Care Education/Training Program1285484212
  2. Simone EnnevorInternal Medicine Physician1912602715
  3. Daniel HannaInternal Medicine Physician1295362457
  4. Andrew Kossack, MDHospitalist Physician1184201485
  5. Kathy Majcina, MDInternal Medicine Physician1164437729
  6. Bruce NakfoorStudent in an Organized Health Care Education/Training Program1891639670

Verify Gregory Desrosiers in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersFlorida health license search
    Search for license ME163528
    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 Florida license search

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

133 Medicare Part D claims for 46 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.

  1. Gregory Desrosiers133
  2. Specialty average3,176

Most prescribed

  1. Metformin Hcl Er15 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: $406.99

15 payments; by number, the most common kind was food and beverage; the largest payer was Abbott Laboratories. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Gregory Desrosiers$406.99
  2. Specialty average$1,303.06

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. Southeastern Physician Services PCPowell, TN

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

Gregory Desrosiers among 10,151 internal medicine physician records in Florida

Gregory Desrosiers, MD is one of 10,151 internal medicine physician records with a practice address in Florida. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 86% of them.

  • NPI issued2020 · 86% of these records are older, 11% newer
  • In a Medicare fileYes · 84% of these records are
  • In the CMS Doctors and Clinicians fileYes · 65% of these records are
  • Graduated2019 · median 2004 among the 6,606 with a school on file
  • Record last updated2023 · 48% 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 Florida practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

208 internal medicine physician records list a practice address in Naples

They are 208 of the 5,950 NPPES records with a practice address in Naples, and 10,151 internal medicine physician records in Florida.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Maria Bendeck, D.O.Naples, FL 341021972592442
  2. Susan Best, DONaples, FL 341021497758833
  3. Jeffrey Craig, MDNaples, FL 341021578528238
  4. George Ferguson, MDNaples, FL 341021336195098
  5. Phillip Francis, MDNaples, FL 341021134166176
  6. Hermes Koop, MDNaples, FL 341021619923323
  7. Richard Kravis, M.D.Naples, FL 341021215937016
  8. David Madwar, MDNaples, FL 341021255383592

Common questions

What is Gregory Desrosiers, MD's NPI number?

Gregory Desrosiers, MD's National Provider Identifier (NPI) is 1104453489, issued on Mar 25, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Gregory Desrosiers, MD located?

The NPPES record lists a practice address at 311 9TH St N Ste 300, Naples, FL, 34102. Phone: (239) 624-0940. Providers update this record themselves, so call before visiting.

How can I verify Gregory Desrosiers, MD's license?

NPPES lists Florida license number ME163528, as entered by the provider. Search the Florida health license search at https://mqa-internet.doh.state.fl.us/mqasearchservices/healthcareproviders. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Gregory Desrosiers, MD prescribe under Medicare Part D?

In 2024, Gregory Desrosiers, MD had 133 Medicare Part D claims for 46 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.

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.