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ROBERT I OSTROFF M.D.
NPI 1912109240
Internal Medicine in Petaluma, CA

Active since May 31, 2007
400 N MCDOWELL BLVD, PETALUMA, CA 94954(707) 778-1111 Get Directions Write a Review

NPPES record last updated: July 24, 2007. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Robert I Ostroff M.d. NPPES

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

ROBERT I OSTROFF M.D. (NPI 1912109240) is an individual internal medicine provider in Petaluma, California, licensed in California (G23046) and active in the NPI registry since May 2007.

NPPES Registry Identity

NPI1912109240
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameROBERT I OSTROFFCredential: M.D.
Location Address400 N MCDOWELL BLVDPetaluma, CA 94954-2339
Mailing Address1310 Commerce St, Suite BPetaluma, CA 94954-1469 · (707) 778-7862 · Fax (707) 778-0969
Phone(707) 778-1111
Sole ProprietorNo
Enumeration DateMay 31, 2007
Last NPPES UpdateJuly 24, 2007
✔ NPI 1912109240 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 · G23046
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.
400 N MCDOWELL BLVD, Petaluma, CA 94954
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Other Identifiers 1

Medicare PIN00G230460CA

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.

NICHOLAS BAUTISTA RN
Registered Nurse
400 N MCDOWELL BLVD
PETALUMA, CA 94954
Sonoma County (707) 778-1111
DR. DONALD SCOTT SCHMIDT M.D.
Emergency Medicine (Emergency Medical Services)
400 N MCDOWELL BLVD
PETALUMA, CA 94954
Sonoma County (707) 778-1111
DR. EARL HERR M.D.
Emergency Medicine (Emergency Medical Services)
400 N MCDOWELL BLVD
PETALUMA, CA 94954
Sonoma County (707) 778-1111
DR. MICHAELA SHEPPHARD M.D.
Emergency Medicine (Emergency Medical Services)
400 N MCDOWELL BLVD
PETALUMA, CA 94954
Sonoma County (707) 778-1111
ANDREW K CHINNOCK FNP
Nurse Practitioner
400 N MCDOWELL BLVD
PETALUMA, CA 94954
Sonoma County (707) 776-8066
ROBERT I OSTROFF MD INC
General Acute Care Hospital
400 N MCDOWELL BLVD
PETALUMA, CA 94954
Sonoma County (707) 778-1111
DR. HENRY LOREN FONG M.D.
Emergency Medicine (Emergency Medical Services)
400 N MCDOWELL BLVD
PETALUMA, CA 94954
Sonoma County (707) 778-1111
KOKEB TESHOME M.D.
Internal Medicine
400 N MCDOWELL BLVD
PETALUMA, CA 94954
Sonoma County (707) 778-1111

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 Robert Ostroff's NPI number?

The NPI number for Robert Ostroff is 1912109240. It was assigned to this individual provider in the NPPES registry on May 31, 2007.

Where is Robert Ostroff located?

Robert Ostroff practices at 400 N Mcdowell Blvd, Petaluma, CA 94954. The listed phone number is (707) 778-1111.

What is Robert Ostroff'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 Robert Ostroff was last updated on July 24, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.