Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Borislav S. Antonov, M.D.

Internal Medicine Physician in Lewes, DE · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1336249804

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Registry record

Entity type Individual (Type 1)

Name Borislav S. Antonov

Credential M.D.

Sex Male

Practice address 424 Savannah Rd, Lewes, DE, 19958

Phone (302) 645-3525

Fax (302) 645-3513

Enumeration date Sep 25, 2006

Last updated in NPPES Jun 4, 2025

Taxonomy & licenses

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License C1-0006494 (DE) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License C1-0006494 (DE) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
1336249804	Other	DE	DIAMOND STATE MEDICAID
P00382719	Other	DE	RAILROAD MEDICARE
000000208393	Other	DE	UNISON HEALTH CARE-MCAID
1336249804	Medicaid	DE	-
1336249804	Other	DE	DE PHYSICIAN CARE-MCAID
522011HOS	Other	DE	BCBS OF DELAWARE-HOSPITAL
591343	Other	DE	COVENTRY HEALTH CARE

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Borislav Antonov?

The National Provider Identifier (NPI) for Borislav Antonov is 1336249804, a Type 1 (individual) record in the CMS NPPES registry.

Where does Borislav Antonov practice?

The practice location on file with NPPES is in Lewes, DE. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Imtiaz Khokhar Internal Medicine Physician · Lewes, DE NPI 1629075387 Anthony Buonanno Internal Medicine Physician · Lewes, DE NPI 1609873413 Yongling Bian Clinical Pathology/Laboratory Medicine Physician · Lewes, DE NPI 1912907510 Maureen Syntax Certified Registered Nurse Anesthetist · Lewes, DE NPI 1093708562 Norman Boyer Diagnostic Radiology Physician · Lewes, DE NPI 1649267717 Jeffrey Mccann Diagnostic Radiology Physician · Lewes, DE NPI 1033106109 Ellen Albert Diagnostic Radiology Physician · Lewes, DE NPI 1790772879 Andrew Dahlke Diagnostic Radiology Physician · Lewes, DE NPI 1912994096

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-06-04.