Maria Diaz, D.O PHARMD
Internal Medicine Physician · Miami Beach, FL
Maria Diaz, D.O PHARMD is an internal medicine physician with a practice address in Miami Beach, Florida, and NPI 1851383913, issued on Aug 16, 2005. Check the license (Florida OS8226, as entered in NPPES) on the Florida health license search; the Medicare figures below come from public CMS files.
- Name
- Maria Diaz
- Credential
- D.O PHARMD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- OS8226 FL
Self-reported in NPPES; status is on the state search - Practice location
- 4308 Alton RD, Miami Beach, FL 33140
- Phone
- (305) 604-2888
- Enumerated
- Aug 16, 2005
- Record last updated
- Jan 12, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (305) 604-2887
- Medicaid ID
- 262657800 FL
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 10,151 in Florida → Look up another NPI →
Also registered at 4308 Alton RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Maria Diaz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersFlorida health license search
Search for license OS8226Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average internal medicine physician in 2024
152 Medicare Part D claims for 22 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.
Most prescribed
- Losartan Potassium12 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: $29.13
1 payment: food and beverage; the largest payer was Lilly USA, LLC. 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.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Maria Diaz among 10,151 internal medicine physician records in Florida
Maria Diaz, D.O PHARMD 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 90% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileNo · 65% of these records are
- Record last updated2010 · 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).
112 internal medicine physician records list a practice address in Miami Beach
They are 112 of the 2,173 NPPES records with a practice address in Miami Beach, and 10,151 internal medicine physician records in Florida.
All 10,151 in Florida → Every provider in Miami Beach → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
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- Alejandro Del Valle, DOMiami Beach, FL 331401720080609
- Martin Drost, MDMiami Beach, FL 331401235135351
- Lewis Elias, M.D.Miami Beach, FL 331401134106453
- Leilany Irizarry-Colon, MDMiami Beach, FL 331401962408120
- Ivan Jonas, MDMiami Beach, FL 331401265438410
- Alan Kutner, MDMiami Beach, FL 331401265438386
Common questions
What is Maria Diaz, D.O PHARMD's NPI number?
Maria Diaz, D.O PHARMD's National Provider Identifier (NPI) is 1851383913, issued on Aug 16, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Maria Diaz, D.O PHARMD located?
The NPPES record lists a practice address at 4308 Alton RD, Miami Beach, FL, 33140. Phone: (305) 604-2888. Providers update this record themselves, so call before visiting.
How can I verify Maria Diaz, D.O PHARMD's license?
NPPES lists Florida license number OS8226, 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 Maria Diaz, D.O PHARMD prescribe under Medicare Part D?
In 2024, Maria Diaz, D.O PHARMD had 152 Medicare Part D claims for 22 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.