NPPES file of Aug 9, 2026

Ralph Marcus, D.O.

Adult Medicine Physician · Miami, FL

Ralph Marcus, D.O. is an adult medicine physician with a practice address in Miami, Florida, and NPI 1669531927, issued on Dec 6, 2006. Check the license (Florida OS0003677, 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
1669531927
Name
Ralph Marcus
Credential
D.O.
Primary taxonomy
Adult Medicine Physician 207QA0505X
License number
OS0003677 FL
Self-reported in NPPES; status is on the state search
Practice location
9000 S.W. 87 CT., Miami, FL 33176
Phone
(305) 232-6565
Enumerated
Dec 6, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
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 adult medicine physician records → All 297 in Florida → Look up another NPI →

Verify Ralph Marcus in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersFlorida health license search
    Search for license OS0003677    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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95% fewer Medicare Part D claims than the average adult medicine physician in 2024

138 Medicare Part D claims for 15 beneficiaries, against an average of 3,002 among the 1,307 providers of this specialty who prescribed in Part D.

  1. Ralph Marcus138
  2. Specialty average3,002

Most prescribed

  1. Clonazepam13 claims
  2. Valsartan13 claims
  3. Amlodipine Besylate12 claims
  4. Simvastatin11 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.

Ralph Marcus among 297 adult medicine physician records in Florida

Ralph Marcus, D.O. is one of 297 adult medicine physician records with a practice address in Florida. 63% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.

  • NPI issued2006 · 6% of these records are older, 54% newer
  • In a Medicare fileYes · 63% of these records are
  • In the CMS Doctors and Clinicians fileNo · 39% of these records are
  • Record last updated2007 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207QA0505X and a Florida practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Adult Medicine Physician providers in Florida

There are 297 adult medicine physician records in Florida.

All 297 in Florida → Every provider in Miami → Adult Medicine Physician nationwide →

The 8 adult medicine physician records with the nearest ZIP codes

  1. Hernando Chong, D.O.Miami, FL 331761386613586
  2. Ariadna Valdes, MEDICAL DOCTORMiami, FL 331761841451929
  3. Jose Calderon, APRN 11001721Miami, FL 331741558822205
  4. Carlos Castillo Basso, APRN,FNPMiami, FL 331741710556618
  5. Belkys Mendigutia Ruiz, MSN,APRN,FNPMiami, FL 331741871162602
  6. Maryse Pedoussaut, M.DMiami, FL 331741881639458
  7. Agustin Alfonso, M.D.Miami, FL 331731508934357
  8. Diego Perez, M.D.Miami, FL 331731598908824

Common questions

What is Ralph Marcus, D.O.'s NPI number?

Ralph Marcus, D.O.'s National Provider Identifier (NPI) is 1669531927, issued on Dec 6, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Ralph Marcus, D.O. located?

The NPPES record lists a practice address at 9000 S.W. 87 CT., Miami, FL, 33176. Phone: (305) 232-6565. Providers update this record themselves, so call before visiting.

How can I verify Ralph Marcus, D.O.'s license?

NPPES lists Florida license number OS0003677, 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 Ralph Marcus, D.O. prescribe under Medicare Part D?

In 2024, Ralph Marcus, D.O. had 138 Medicare Part D claims for 15 beneficiaries; the average among adult medicine physician prescribers was 3,002. 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.