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

Lynn Van Ummersen, MD

Individual provider Medical Oncology Physician · NPI 1447211818

Lynn Van Ummersen, MD is a Hematology/Oncology in Orange City, Florida. Graduated from University of Massachusetts Medical School in 1991, 35 years ago. Practices with Florida Cancer Specialists and Research Institute, LLC, a 460-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Florida.

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

See every abbreviation used in this directory →

Practice location Address checks out

2824 Enterprise Rd
Orange City, FL 32763-8428
Phone: (386) 774-7411
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 810 N Spring Garden Ave Ste 101, Deland, FL 32720-3106 — (386) 943-9446

Specialties & licences

Medical Oncology Physician (primary) Taxonomy 207RX0202X · Licence 99045 (FL)

Record details

NPI number1447211818
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 28, 2006
Last updated in NPPESJuly 2, 2026
Certification dateJuly 2, 2026

Medicare enrollment

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

Medicare specialtyHEMATOLOGY/ONCOLOGY
Medical schoolUNIVERSITY OF MASSACHUSETTS MEDICAL SCHOOL
Graduated 1991 (35 years in practice)
Group practice Florida Cancer Specialists And Research Institute, Llc — 460 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Orange City