1. Home
  2. Directory
  3. California
  4. Ventura
  5. Internal Medicine
  6. NPI Profile

ILONA SYLVESTER M.D.
NPI 1215959291
Internal Medicine in Ventura, CA

Active since July 25, 2006
200 S WELLS RD, SUITE 200, VENTURA, CA 93004(805) 659-1740(805) 659-9959 Get Directions Write a Review

NPPES record last updated: March 22, 2013. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Ilona Sylvester M.d. NPPES

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

ILONA SYLVESTER M.D. (NPI 1215959291) is an individual internal medicine provider in Ventura, California, licensed in California (A055316) and active in the NPI registry since July 2006.

NPPES Registry Identity

NPI1215959291
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameILONA SYLVESTERCredential: M.D.
Location Address200 S WELLS RD, SUITE 200Ventura, CA 93004-1377
Mailing Address200 S Wells Rd, Suite 200Ventura, CA 93004-1377 · (805) 659-1740 · Fax (805) 659-9959
Phone(805) 659-1740
Fax(805) 659-9959
Sole ProprietorNo
Enumeration DateJuly 25, 2006
Last NPPES UpdateMarch 22, 2013
✔ NPI 1215959291 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · A055316
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.
200 S WELLS RD, Ventura, CA 93004
Open in Google Maps ↗

Other Identifiers 10

Other95-1683892CA · Other Insurance
Medicare ID-Type Unspecified058608CA · Rh Medicare
MedicaidRHM18553HCA
Other050394CA · Blue Cross
Medicare ID-Type Unspecified058553CA · Rh Medicare
MedicaidRHM08609FCA
Medicare ID-Type Unspecified050394CA · Medicare
Medicare ID-Type Unspecified058609CA · Rh Medicare
MedicaidRHM08608FCA
MedicaidZZT40394FCA

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.

DR. FOUZIA ANWAR AFTAB MD
Family Medicine
200 S WELLS RD, SUITE 100 CLINICAS DEL CAMINO REAL INC
VENTURA, CA 93004
Ventura County (805) 659-1740
DR. HEIDI MICHELLE ELOWITCH PHD
Psychologist
200 S WELLS RD, CLINICAS DEL CAMINO REAL INC
VENTURA, CA 93004
Ventura County (805) 732-9446
DR. PEDRO LUIS GONZALEZ DMD
Dentist (Endodontics)
200 S WELLS RD, SUITE 200
VENTURA, CA 93004
Ventura County (805) 659-1740
DR. HADEEL ISSA NAQIB M.D.
Pediatrics
200 S WELLS RD
VENTURA, CA 93004
Ventura County (410) 687-6434
DR. SHYAM MURKOTH KRISHNAN DDS
Dentist
200 S WELLS RD, SUITE 200
VENTURA, CA 93004
Ventura County (805) 659-1740
LAUREEN LOPEZ BERRY FNP
Nurse Practitioner (Family)
200 S WELLS RD
VENTURA, CA 93004
Ventura County (805) 647-6353
MS. LANETTE A HATCH MSPAC
Physician Assistant
200 S WELLS RD, SUITE 200
VENTURA, CA 93004
Ventura County (805) 659-1740
DR. KLARA EFNER DDS
Dentist (General Practice)
200 S WELLS RD, SUITE 100
VENTURA, CA 93004
Ventura County (805) 647-6322

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 Ilona Sylvester's NPI number?

The NPI number for Ilona Sylvester is 1215959291. It was assigned to this individual provider in the NPPES registry on July 25, 2006.

Where is Ilona Sylvester located?

Ilona Sylvester practices at 200 S Wells Rd Suite 200, Ventura, CA 93004. The listed phone number is (805) 659-1740.

What is Ilona Sylvester'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 Ilona Sylvester was last updated on March 22, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years 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.