Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. David Alexander Lessman

Individual provider Nephrology Physician · NPI 1487813275

Dr. David Alexander Lessman practises Nephrology in New York, New York. Graduated from Icahn School of Medicine at Mount Sinai in 2007, 19 years ago. Practices with The Madison Physicians, LLP, a 6-clinician group, accepts Medicare assignment and offers telehealth. Licensed in New York.

Years since qualifying
19
Trained at
Icahn School of Medicine at Mount Sinai
Licensed in
NY
In the registry since
2008
Specialties on file
2
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Practice location Address checks out

177 Fort Washington Ave
New York, NY 10032-3733
Phone: (212) 305-5138
Fax: (212) 305-2843
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Nephrology Physician (primary) Taxonomy 207RN0300X · Licence 253662 (NY)
Internal Medicine Physician Taxonomy 207R00000X · Licence 253662 (NY)

Record details

NPI number1487813275
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedJune 5, 2008
Last updated in NPPESNovember 1, 2016

Medicare enrollment

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

Medicare specialtyNEPHROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolICAHN SCHOOL OF MEDICINE AT MOUNT SINAI
Graduated 2007 (19 years in practice)
Group practice The Madison Physicians, Llp — 6 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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 patients264
Services billed 1,153 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

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.

Food and Beverage $249 9 payments · a meal or drink at a meeting or visit, not a fee

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.

Colleagues at The Madison Physicians, LLP

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 6 clinicians in the practice; 4 are shown here.

Other providers in New York