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

Marc E Portner, MD

Individual provider Emergency Medicine Physician · NPI 1831222959

Marc E Portner, MD is registered under Critical Care (Intensivists) in Lakeland, Florida. Graduated from Pennsylvania State University College of Medicine in 2003, 23 years ago. Practices with Lakeland Regional Health Systems Inc, a 503-clinician group and accepts Medicare assignment. Licensed in Florida and Pennsylvania.

Years since qualifying
23
Trained at
Pennsylvania State University College of Medicine
Licensed in
FL, PA
In the registry since
2007
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

1324 Lakeland Hills Blvd
Lakeland, FL 33805-4543 Not confirmed with CMS for 10 years — call before visiting
Phone: (863) 687-1321
Fax: (863) 284-1730
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Critical Care Medicine (Internal Medicine) Physician (primary) Taxonomy 207RC0200X · Licence ME124696 (FL)
Emergency Medicine Physician Taxonomy 207P00000X · Licence MD427273 (PA)
Surgical Critical Care Physician Taxonomy 2086S0102X · Licence MD427273 (PA)

Record details

NPI number1831222959
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 14, 2007
Last updated in NPPESSeptember 20, 2016

Medicare enrollment

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

Medicare specialtyCRITICAL CARE (INTENSIVISTS)
Also practisesEMERGENCY MEDICINE
Medical schoolPENNSYLVANIA STATE UNIVERSITY COLLEGE OF MEDICINE
Graduated 2003 (23 years in practice)
Group practice Lakeland Regional Health Systems Inc — 503 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 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 patients102
Services billed 214 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Lakeland Regional Health Systems Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 503 clinicians in the practice; 12 are shown here.

Other providers in Lakeland