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DR. ELIZABETH O, ROSS M.D.
NPI 1437358967
Internal Medicine - Gastroenterology in San Francisco, CA

Active since July 14, 2007PECOS Enrolled
2350 GEARY BLVD, SAN FRANCISCO, CA 94115(415) 833-2000 Get Directions Write a Review

NPPES record last updated: May 13, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: May 13, 2024, Dec 14, 2021 (2 updates tracked since 2021).

About Dr. Elizabeth O, Ross M.d. NPPES

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

DR. ELIZABETH O, ROSS M.D. (NPI 1437358967) is an individual gastroenterology provider in San Francisco, California, licensed in California (A119731) and active in the NPI registry since July 2007. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1437358967
Entity TypeIndividualFemale
Primary Taxonomy207RG0100X
Provider Legal NameDR. ELIZABETH O, ROSSCredential: M.D.
Location Address2350 GEARY BLVDSan Francisco, CA 94115-3305
Mailing Address144 E 7th St, Apt A15New York, NY 10009-6203 · (917) 309-1470
Phone(415) 833-2000
Sole ProprietorNo
Enumeration DateJuly 14, 2007
Last NPPES UpdateMay 13, 20242 updates tracked since enumeration
NPPES CertifiedMay 13, 2024
✔ NPI 1437358967 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
Licenses✔ Licensed in CA · A119731✔ Licensed in HI · 16185
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
2350 GEARY BLVD, San Francisco, CA 94115
Open in Google Maps ↗

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Elizabeth O, Ross M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Elizabeth Ross reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Permanente Medical Group Inc
0.1 mi
Internal Medicine
2238 GEARY
San Francisco, CA 94116
  • Reassigned Medicare billing, California enrollment
  • 20,078 clinicians in this Medicare group
NPI 1841373800 (415) 833-2200

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94115 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$153.83 typical visit price
range $69.00 – $202.35
Typical copayment $38.45 (range $17.25 – $50.58)
Most-billed visit code 99204
Established Patient
$119.48 typical visit price
range $23.44 – $166.46
Typical copayment $29.87 (range $5.86 – $41.61)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

KRISTIN SUZANNE MORTIMORE PA-C
Physician Assistant (Surgical)
2350 GEARY BLVD
SAN FRANCISCO, CA 94115
San Francisco County (415) 833-3800
KRISTINA KEILMAN MS, CGC
Genetic Counselor, MS
2350 GEARY BLVD, GENETICS, 3RD FLOOR
SAN FRANCISCO, CA 94115
San Francisco County (415) 833-2998
MR. KEVIN NG-TANG PA-C
Internal Medicine (Gastroenterology)
2350 GEARY BLVD
SAN FRANCISCO, CA 94115
San Francisco County (510) 386-3177
MS. LYNNETTE A DECILLIS
Nurse Practitioner (Acute Care)
2350 GEARY BLVD
SAN FRANCISCO, CA 94115
San Francisco County (415) 833-2000
MS. REENA J PATEL
Genetic Counselor, MS
2350 GEARY BLVD, 3RD FLOOR GENETICS DEPT.
SAN FRANCISCO, CA 94115
San Francisco County (415) 833-3872
SUNGJOO STEPHANIE BAE MS
Genetic Counselor, MS
2350 GEARY BLVD
SAN FRANCISCO, CA 94115
San Francisco County (415) 833-2000
KATHLEEN MARY GHANAYEM
Respiratory Therapist, Registered (Pulmonary Diagnostics)
2350 GEARY BLVD
SAN FRANCISCO, CA 94115
San Francisco County (415) 833-8525
REGINA ELIZABETH LIU PHARMD, CDE
Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)
2350 GEARY BLVD
SAN FRANCISCO, CA 94115
San Francisco County (415) 833-0142

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 Elizabeth Ross's NPI number?

The NPI number for Elizabeth Ross is 1437358967. It was assigned to this individual provider in the NPPES registry on July 14, 2007.

Where is Elizabeth Ross located?

Elizabeth Ross practices at 2350 Geary Blvd, San Francisco, CA 94115. The listed phone number is (415) 833-2000.

What is Elizabeth Ross's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Elizabeth Ross enrolled in Medicare?

Yes. Elizabeth Ross is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Elizabeth Ross's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Elizabeth Ross reassigns Medicare benefits to Permanente Medical Group Inc (San Francisco, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Elizabeth Ross's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Elizabeth Ross was last updated on May 13, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.