Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

William Dinenberg, MD

Individual provider Orthopaedic Surgery Physician · NPI 1770556334

William Dinenberg, MD practises Orthopedic Surgery in Sarasota, Florida. Qualified in 1991, 35 years ago. Practices with Mark B Lonstein MD PA, a 2-clinician group and accepts Medicare assignment. Licensed in Florida.

Years since qualifying
35
Licensed in
FL
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1921 Waldemere St Ste 609
Sarasota, FL 34239-2943 Not confirmed with CMS for 14 years — call before visiting
Phone: (941) 917-6500
Fax: (941) 917-6504
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Orthopaedic Surgery Physician (primary) Taxonomy 207X00000X · Licence ME80369 (FL)

Record details

NPI number1770556334
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 13, 2006
Last updated in NPPESNovember 22, 2011

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyORTHOPEDIC SURGERY
Medical schoolOTHER
Graduated 1991 (35 years in practice)
Group practice Mark B Lonstein Md Pa — 2 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients22
Services billed 1,274 a service is one billed item, such as a visit, a test or a procedure
Average patient age78

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Mark B Lonstein MD PA

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.

Other providers in Sarasota