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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. OLEG REZNIK MD
NPI 1548884166
Internal Medicine in Orlando, FL

Active since May 29, 2020
52 UNDERWOOD ST, ORLANDO, FL 32806(321) 843-5172 Get Directions Write a Review

NPPES record last updated: July 7, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 7, 2026, Feb 19, 2025, May 29, 2020 (3 updates tracked since 2020).

About Dr. Oleg Reznik Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. OLEG REZNIK MD (NPI 1548884166) is an individual internal medicine provider in Orlando, Florida, licensed in Pennsylvania (MT220902) and active in the NPI registry since May 2020.

NPPES Registry Identity

NPI1548884166
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. OLEG REZNIKCredential: MD
Location Address52 UNDERWOOD STOrlando, FL 32806-1110
Mailing Address1335 Sligh BlvdOrlando, FL 32806-3901 · (321) 843-5172
Phone(321) 843-5172
Sole ProprietorNo
Enumeration DateMay 29, 2020
Last NPPES UpdateJuly 7, 20263 updates tracked since enumeration
NPPES CertifiedJuly 7, 2026
✔ NPI 1548884166 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in PA · MT220902
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
52 UNDERWOOD ST, Orlando, FL 32806
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Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

THAI QUOC NGUYEN MD
Internal Medicine
52 UNDERWOOD ST
ORLANDO, FL 32806
Orange County (321) 841-3581
MAQSOOD KHAN
Radiology (Diagnostic Radiology)
52 UNDERWOOD ST
ORLANDO, FL 32806
Orange County (321) 842-8475
SHARMILA PEARL PRICE M.D.
Internal Medicine
52 UNDERWOOD ST
ORLANDO, FL 32806
Orange County (321) 841-3581
DIEGO ESTEBAN VANEGAS ACOSTA MD
Internal Medicine
52 UNDERWOOD ST
ORLANDO, FL 32806
Orange County (321) 841-3581
NAFEESA RAADIA KHAN
Family Medicine
52 UNDERWOOD ST
ORLANDO, FL 32806
Orange County (321) 841-3581
NICOLE PHAM-SUN DO
Internal Medicine
52 UNDERWOOD ST
ORLANDO, FL 32806
Orange County (321) 841-3581
LIBBY THOMAS
Nurse Practitioner (Adult Health)
52 UNDERWOOD ST
ORLANDO, FL 32806
Orange County (321) 841-8727
LINDA GAVRIC DO
Student in an Organized Health Care Education/Training Program
52 UNDERWOOD ST
ORLANDO, FL 32806
Orange County (407) 841-5145

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Oleg Reznik's NPI number?

The NPI number for Oleg Reznik is 1548884166. It was assigned to this individual provider in the NPPES registry on May 29, 2020.

Where is Oleg Reznik located?

Oleg Reznik practices at 52 Underwood St, Orlando, FL 32806. The listed phone number is (321) 843-5172.

What is Oleg Reznik's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

When was this NPI record last updated?

The NPPES record for Oleg Reznik was last updated on July 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 34 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.