1. Home
  2. Directory
  3. Florida
  4. Sunny Isles Beach
  5. Internal Medicine
  6. NPI Profile
Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

SYLVIA DIAZ M.D.
NPI 1083880009
Internal Medicine - Endocrinology, Diabetes & Metabolism in Sunny Isles Beach, FL

Active since April 30, 2008PECOS EnrolledAccepts Medicare Assignment
323 SUNNY ISLES BLVD, SUNNY ISLES BEACH, FL 33160(786) 274-8105(786) 274-8905 Get Directions Write a Review

NPPES record last updated: September 28, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 28, 2026, Dec 19, 2025, Apr 18, 2022 and 2 more (5 updates tracked since 2019).

About Sylvia Diaz M.d. NPPES

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

SYLVIA DIAZ M.D. (NPI 1083880009) is an individual endocrinology, diabetes & metabolism provider in Sunny Isles Beach, Florida, licensed in Florida (ME115603) and active in the NPI registry since April 2008. She is enrolled in Medicare PECOS, is affiliated with Canton-potsdam Hospital, and maintains 4 additional practice locations.

NPPES Registry Identity

NPI1083880009
Entity TypeIndividualFemale
Primary Taxonomy207RE0101X
Provider Legal NameSYLVIA DIAZCredential: M.D.
Location Address323 SUNNY ISLES BLVDSunny Isles Beach, FL 33160
Mailing Address2845 Aventura Blvd Ste 250Aventura, FL 33180-3120 · (305) 692-1080 · Fax (305) 692-1081
Phone(786) 274-8105
Fax(786) 274-8905
Sole ProprietorNo
Medical School CMSOtherGraduated 1999
Enumeration DateApril 30, 2008
Last NPPES UpdateSeptember 28, 20265 updates tracked since enumeration
NPPES CertifiedSeptember 28, 2026
✔ NPI 1083880009 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians
Taxonomy Code207RE0101X
Licenses✔ Licensed in FL · ME115603✔ Licensed in WV · 35410✔ Licensed in SC · 84910✔ Licensed in NH · 19510✔ Licensed in NY · 284748✔ Licensed in NH · LT-4051
Definition
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.
Also ListedInternal MedicineTaxonomy 207R00000X · License 35410 (WV), ME115603 (FL)
323 SUNNY ISLES BLVD, Sunny Isles Beach, FL 33160
Open in Google Maps ↗

Secondary Practice Locations 4

Location 1101 E Wood StSpartanburg, SC 29303-3040 · Phone (864) 560-6419 · Fax (864) 560-7498
Location 220 4th StMalone, NY 12953-1339 · Phone (518) 481-2677
Location 3100 Hitchcock WayManchester, NH 03104-4125 · Phone (603) 695-2722
Location 43100 MacCorkle Ave SE Ste 810Charleston, WV 25304-1233 · Phone (304) 351-3961

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Absolute Total Care, Ambetter Health, Ambetter of North Carolina 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

Sylvia Diaz M.d. 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 ID9537303813
PECOS Enrollment IDI20260128004111
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 Reassignments

4

Medicare enrollment records show Sylvia Diaz reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Physician Practices Of Msmc, LLC
7.9 mi
Neurological Surgery
4302 ALTON RD, SUITE 830
Miami Beach, FL 33140
  • Reassigned Medicare billing, Florida enrollment
  • 240 clinicians in this Medicare group
NPI 1356630628 (305) 674-2404
Charleston Area Medical Center, Inc.
816 mi
Hospitalist
1320 MAPLEWOOD AVE
Ronceverte, WV 24970
  • Reassigned Medicare billing, West Virginia enrollment
  • 1,511 clinicians in this Medicare group
NPI 1972125995 (304) 793-2220
Westchester Medical Center Advanced Physician Services PC
1,106 mi
Anesthesiology
100 WOODS RD, TAYLOR PAVILION - ROOM M229
Valhalla, NY 10595
  • Reassigned Medicare billing, New York enrollment
  • 1,663 clinicians in this Medicare group
NPI 1740687458 (914) 493-2844
Alice Hyde Medical Center
1,345 mi
Critical Access
133 PARK ST
Malone, NY 12953
  • Reassigned Medicare billing, New York enrollment
  • 326 clinicians in this Medicare group
NPI 1114954682 (518) 481-2210

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

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Canton-Potsdam Hospital

Acute Care Hospitals · Potsdam, NY
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330197
Location50 Leroy StreetPotsdam, NY 13676 · St. Lawrence County
Emergency services Birthing friendly

Champlain Valley Physicians Hospital Medical Ctr

Acute Care Hospitals · Plattsburgh, NY
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330250
Location75 Beekman StreetPlattsburgh, NY 12901 · Clinton County
Emergency services Birthing friendly

The University Of Vermont Health Network-Alice Hy

Critical Access Hospitals · Malone, NY
OwnershipVoluntary non-profit - Private
CMS Certification Number331321
Location133 Park Street, PO Box 729Malone, NY 12953 · Franklin County
Emergency services

Slhs Massena, Inc

Critical Access Hospitals · Massena, NY
OwnershipVoluntary non-profit - Private
CMS Certification Number331322
Location1 Hospital DriveMassena, NY 13662 · St. Lawrence County
Emergency services

Charleston Area Medical Center

Acute Care Hospitals · Charleston, WV
1/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number510022
Location501 Morris StreetCharleston, WV 25301 · Kanawha County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 33160 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.

Referred Medical Equipment & Supplies CMS DME claims 6

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Supplies for maintenance of insulin infusion catheter, per week A4224
DME-Other DME · category DE017N
6 suppliers19 claims240 services$19.52 avg. paid by Medicare
Supplies for external insulin infusion pump, syringe type cartridge, sterile, each A4225
DME-Other DME · category DE017N
6 suppliers19 claims755 services$2.43 avg. paid by Medicare
Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
11 suppliers24 claims118 services$6.71 avg. paid by Medicare
External ambulatory infusion pump, insulin E0784
DME-Other DME · category DE017N
1 supplier16 claims16 services$331.94 avg. paid by Medicare
Insulin for administration through dme (i.e., insulin pump) per 50 units J1817
Treatment-Injections and Infusions (nononcologic) · category RI000N
6 suppliers25 claims3,660 services$6.61 avg. paid by Medicare
Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553
DME-Other DME · category DE017N
14 suppliers284 claims285 services$187.02 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES

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

SALUD HEALTHCARE LAUDERDALE LAKES, LLC
Internal Medicine (Cardiovascular Disease)
323 SUNNY ISLES BLVD
SUNNY ISLES BEACH, FL 33160
Miami-Dade County (954) 231-5141

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 Sylvia Diaz's NPI number?

The NPI number for Sylvia Diaz is 1083880009. It was assigned to this individual provider in the NPPES registry on April 30, 2008.

Where is Sylvia Diaz located?

Sylvia Diaz practices at 323 Sunny Isles Blvd, Sunny Isles Beach, FL 33160. The listed phone number is (786) 274-8105.

What is Sylvia Diaz's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Is Sylvia Diaz enrolled in Medicare?

Yes. Sylvia 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 organizations bill Medicare for Sylvia Diaz's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Sylvia Diaz reassigns Medicare benefits to 4 organizations: Physician Practices Of Msmc, LLC (Miami Beach, FL), Charleston Area Medical Center, Inc. (Ronceverte, WV), Westchester Medical Center Advanced Physician Services PC (Valhalla, NY) and Alice Hyde Medical Center (Malone, NY). Each 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 Sylvia Diaz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Sylvia Diaz accept?

Health plans from Ambetter Health, Ambetter from Absolute Total Care, Ambetter of North Carolina, BlueCross BlueShield of South Carolina and CareSource and 2 other insurers list Sylvia 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.

Is Sylvia Diaz affiliated with any hospitals?

According to CMS data, Sylvia Diaz is affiliated with Canton-Potsdam Hospital, Champlain Valley Physicians Hospital Medical Ctr, The University Of Vermont Health Network-Alice Hy, Slhs Massena, Inc and Charleston Area Medical Center.

When was this NPI record last updated?

The NPPES record for Sylvia Diaz was last updated on September 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 29 days 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.