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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.

GROSSMAN AND GROSSMAN M D S A MEDICAL CORPORATION
NPI 1255483525
Obstetrics & Gynecology - Obstetrics in Thousand Oaks, CA

Active since January 17, 2007
558 N VENTU PARK RD, SUITE A, THOUSAND OAKS, CA 91320(805) 498-0240 Get Directions Write a Review

NPPES record last updated: August 4, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Aug 4, 2026, Jan 16, 2026, Feb 7, 2020 (3 updates tracked since 2020).

About Grossman And Grossman M D S A Medical Corporation NPPES

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

GROSSMAN AND GROSSMAN M D S A MEDICAL CORPORATION (NPI 1255483525) is a healthcare organization registered as an obstetrics in Thousand Oaks, California and active in the NPI registry since January 2007. The organization lists Robert Grossman, President, as its authorized official.

NPPES Registry Identity

NPI1255483525
Entity TypeOrganization
Primary Taxonomy207VX0000X
Legal Business NameGROSSMAN AND GROSSMAN M D S A MEDICAL CORPORATION
Location Address558 N VENTU PARK RD, SUITE AThousand Oaks, CA 91320-2718
Mailing Address558 N Ventu Park Rd Ste AThousand Oaks, CA 91320-2752 · (805) 498-0240
Phone(805) 498-0240
Organization SubpartNo
Authorized OfficialRobert GrossmanPresident · (805) 498-0240
Enumeration DateJanuary 17, 2007
Last NPPES UpdateAugust 4, 20263 updates tracked since enumeration
NPPES CertifiedAugust 4, 2026
✔ NPI 1255483525 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyObstetrics & Gynecology · ObstetricsAllopathic & Osteopathic Physicians
Taxonomy Code207VX0000X
Definition
A physician who specializes in diagnosis, treatment, and management of patients with obstetric conditions. Source: National Uniform Claim Committee
Also ListedInternal MedicineTaxonomy 207R00000X
558 N VENTU PARK RD, Thousand Oaks, CA 91320
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Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Other Providers at the Same Location NPPES 5

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

JENNIFER S YOUNG DO, INC.
Family Medicine
558 N VENTU PARK RD, SUITE A
THOUSAND OAKS, CA 91320
Ventura County (805) 498-8265
VALARIE CHRISTINE RENAUX RN, MSN, FNP
Specialist
558 N VENTU PARK RD
NEWBURY PARK, CA 91320
Ventura County (805) 480-0499
HANNAH GROSSMAN
Obstetrics & Gynecology (Gynecology)
558 N VENTU PARK RD, SUITE A
THOUSAND OAKS, CA 91320
Ventura County (805) 498-0240
MRS. BONNI TROMELLO CFNP
Nurse Practitioner (Family)
558 N VENTU PARK RD, SUITE B
NEWBURY PARK, CA 91320
Ventura County (805) 480-0499
CROSSROADS IN HEALTH
Nurse Practitioner
558 N VENTU PARK RD, SUITE B
NEWBURY PARK, CA 91320
Ventura County (805) 480-0499

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 Grossman And Grossman M D S A Medical Corporation's NPI number?

The NPI number for Grossman And Grossman M D S A Medical Corporation is 1255483525. It was assigned to this organization in the NPPES registry on January 17, 2007.

Where is Grossman And Grossman M D S A Medical Corporation located?

Grossman And Grossman M D S A Medical Corporation is located at 558 N Ventu Park Rd Suite A, Thousand Oaks, CA 91320. The listed phone number is (805) 498-0240.

What is Grossman And Grossman M D S A Medical Corporation's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Obstetrics, with taxonomy code 207VX0000X.

When was this NPI record last updated?

The NPPES record for Grossman And Grossman M D S A Medical Corporation was last updated on August 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.