Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Nathaniel P Fleischner, MD

Individual provider Internal Medicine Physician · NPI 1083880926

Dr. Nathaniel P Fleischner, MD is an Internal Medicine in Royal Palm Beach, Florida. Graduated from Boston University School of Medicine in 2005, 21 years ago. Practices with Accountable Teaching Services LLC, a 22-clinician group and accepts Medicare assignment. Licensed in Florida.

Years since qualifying
21
Trained at
Boston University School of Medicine
Licensed in
FL
In the registry since
2008
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

11700 Okeechobee Blvd
Royal Palm Beach, FL 33411-8721
Phone: (561) 790-0789
Fax: (855) 753-3317
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence ME105685 (FL)

Record details

NPI number1083880926
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 30, 2008
Last updated in NPPESJune 23, 2025
Certification dateJune 23, 2025
Mailing address11700 Okeechobee Blvd, Royal Palm Beach, FL 33411-8721

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolBOSTON UNIVERSITY SCHOOL OF MEDICINE
Graduated 2005 (21 years in practice)
Group practice Accountable Teaching Services Llc — 22 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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