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MS. MARIA DIAZ D.O PHARMD
NPI 1851383913
Internal Medicine in Miami Beach, FL

Active since August 16, 2005PECOS EnrolledAccepts Medicare Assignment
4308 ALTON RD, SUITE 860, MIAMI BEACH, FL 33140(305) 604-2888(305) 604-2887 Get Directions Write a Review

NPPES record last updated: January 12, 2010. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Ms. Maria Diaz D.o Pharmd NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MS. MARIA DIAZ D.O PHARMD (NPI 1851383913) is an individual internal medicine provider in Miami Beach, Florida, licensed in Florida (OS8226) and active in the NPI registry since August 2005. She is enrolled in Medicare PECOS and is a graduate of Nova Southeastern College Of Osteo Medicine (1998).

NPPES Registry Identity

NPI1851383913
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameMS. MARIA DIAZCredential: D.O PHARMD
Location Address4308 ALTON RD, SUITE 860Miami Beach, FL 33140-4556
Mailing Address9415 Ne 6th AveMiami Shores, FL 33138 · (305) 756-7899 · Fax (305) 756-7898
Phone(305) 604-2888
Fax(305) 604-2887
Sole ProprietorNo
Medical School CMSNova Southeastern College Of Osteo MedicineGraduated 1998
Enumeration DateAugust 16, 2005
Last NPPES UpdateJanuary 12, 2010
✔ NPI 1851383913 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in FL · OS8226
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
4308 ALTON RD, Miami Beach, FL 33140
Open in Google Maps ↗

Other Identifiers 4

Medicaid262657800FL
Medicare ID-Type UnspecifiedK5246FL
Other06337YFL · Medicare Ind.
Medicare UPINH54026FL

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Superior HealthPlan, Ambetter Health, Ambetter of Alabama and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Ms. Maria Diaz D.o Pharmd is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3779576681
PECOS Enrollment IDI20040407000762
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Maria Diaz reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Miami Aesthetics Inc
4.4 mi
Internal Medicine
9420 PARK DR
Miami Shores, FL 33138
  • Reassigned Medicare billing, Florida enrollment
NPI 1073700670 (305) 756-7898

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 33140 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$141.56 typical visit price
range $60.92 – $187.05
Typical copayment $35.39 (range $15.23 – $46.76)
Most-billed visit code 99204
Established Patient
$107.17 typical visit price
range $18.99 – $150.24
Typical copayment $26.79 (range $4.74 – $37.56)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

OSVALDO HALPHEN M D P A
Orthopaedic Surgery
4308 ALTON RD, SUITE 320
MIAMI BEACH, FL 33140
Miami-Dade County (305) 532-5445
CARLOS ARTURO VILLALBA MD
Internal Medicine
4308 ALTON RD, 860
MIAMI BEACH, FL 33140
Miami-Dade County (305) 604-2888
BRIAN JEFFREY KATZ MD
Dermatology
4308 ALTON RD, S.510
MIAMI BEACH, FL 33140
Miami-Dade County (305) 674-8865
DANA Y RAMIREZ-ANGUIANO MD
Pediatrics
4308 ALTON RD, SUITE 910
MIAMI BEACH, FL 33140
Miami-Dade County (305) 532-3378
MAIN STREET CHILDRENS DENTISTRY AND ORTHODONTICS OF MIAMI BEACH PLLC
Dentist
4308 ALTON RD, SUITE 930
MIAMI BEACH, FL 33140
Miami-Dade County (305) 274-2499
DR. TAYLOR GIBBS POOLE M.D.
Ophthalmology
4308 ALTON RD, SUITE 870
MIAMI BEACH, FL 33140
Miami-Dade County (305) 674-2047
PATRICIA CASTELLANOS MATEUS
General Acute Care Hospital
4308 ALTON RD, 860
MIAMI, FL 33140
Miami-Dade County (305) 604-2888
DR. DANIEL RIVLIN MD
Dermatology (Dermatopathology)
4308 ALTON RD, STE 510
MIAMI BEACH, FL 33140
Miami-Dade County (305) 674-8865

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Maria Diaz's NPI number?

The NPI number for Maria Diaz is 1851383913. It was assigned to this individual provider in the NPPES registry on August 16, 2005.

Where is Maria Diaz located?

Maria Diaz practices at 4308 Alton Rd Suite 860, Miami Beach, FL 33140. The listed phone number is (305) 604-2888.

What is Maria Diaz's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Maria Diaz enrolled in Medicare?

Yes. Maria Diaz is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Maria Diaz's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Maria Diaz reassigns Medicare benefits to Miami Aesthetics Inc (Miami Shores, FL). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Maria Diaz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Maria Diaz accept?

Health plans from Ambetter Health, Ambetter from Superior HealthPlan, Ambetter of Alabama, Florida Blue (BlueCross BlueShield FL) and Florida Blue HMO (a BlueCross BlueShield FL company) and 1 other insurer list Maria Diaz as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Maria Diaz was last updated on January 12, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.