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

Dr. Brian Matthew Lake, DO

Individual provider Internal Medicine Physician · NPI 1295887040

Dr. Brian Matthew Lake, DO practises Endocrinology in Largo, Florida. Graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville in 2004, 22 years ago. Practices with Lake Endocrinology and Diabetes, PLLC, a 2-clinician group and accepts Medicare assignment. Licensed in Florida and South Carolina.

Years since qualifying
22
Trained at
At Still University of Health Sciences, College of Osteo Med, Kirksville
Licensed in
FL, SC
In the registry since
2007
Specialties on file
3
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

13123 66th St
Largo, FL 33773-1812
Phone: (727) 477-1039
Fax: (727) 477-0498
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Endocrinology, Diabetes & Metabolism Physician (primary) Taxonomy 207RE0101X · Licence OS9591 (FL)
Internal Medicine Physician Taxonomy 207R00000X · Licence OS9591 (FL)
Endocrinology, Diabetes & Metabolism Physician Taxonomy 207RE0101X · Licence 1056 (SC)

Record details

NPI number1295887040
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorYes
NPI enumeratedJanuary 18, 2007
Last updated in NPPESMay 2, 2021
Certification dateMay 2, 2021

Medicare enrollment

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

Medicare specialtyENDOCRINOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolAT STILL UNIVERSITY OF HEALTH SCIENCES, COLLEGE OF OSTEO MED, KIRKSVILLE
Graduated 2004 (22 years in practice)
Group practice Lake Endocrinology And Diabetes, Pllc — 2 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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 patients667
Services billed 2,630 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Compensation for services other than consulting , including serving as faculty or as a speaker at a venue other than a continuing education program $106,426 71 payments
Compensation for serving as faculty or as a speaker for a medical education program $30,149 18 payments
Travel and Lodging $10,874 60 payments · travel or lodging paid or reimbursed, such as to attend a conference
Food and Beverage $7,632 173 payments · a meal or drink at a meeting or visit, not a fee
Consulting Fee $7,125 1 payment

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Morton Plant Hospital Hospital · Clearwater, FL · listed as Morton Plant Mease Hospital
  • St Anthonys Hospital Hospital · Saint Petersburg, FL · listed as St Anthonys Hospital, Inc
  • St Josephs Hospital Hospital · Tampa, FL · listed as St Joseph's Hospital, Inc
  • Orlando Health Bayfront Hospital Hospital · Saint Petersburg, FL

Colleagues at Lake Endocrinology and Diabetes, PLLC

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

Other providers in Largo