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Allergy/Immunology

Toby Levenson, MD

Works at hospitals in Fremont, CA · California

Summary

Toby Levenson, MD (Allergy/Immunology) is listed by Medicare at 1 hospital in Fremont, CA. NPI 1649288945. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Toby Levenson, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Allergy/ImmunologyPrimary specialty
YesAccepts Medicare assignment
YesOffers telehealth
36Years since medical school (graduated 1990)
Northwestern University Feinberg Medical SchoolMedical school
FemaleGender (as listed)
UCSF Health Medical FoundationGroup practice

Quick answers

Which hospitals does Toby Levenson work at?
Medicare's official clinician data lists Toby Levenson at 1 hospital: Washington Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Toby Levenson see patients?
Medicare's clinician data lists 1 practice location in Redwood City, CA. Call before your visit to confirm the address.
What is Toby Levenson's specialty?
Medicare lists Allergy/Immunology as the primary specialty, and also Internal Medicine.
Does Toby Levenson accept Medicare assignment?
Yes. Medicare's clinician data says Toby Levenson accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
Does Toby Levenson offer telehealth?
Medicare's clinician data says Toby Levenson offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Toby Levenson?
(650) 701-1882, as listed in official Medicare / NPI Registry data.
What is Toby Levenson's NPI number?
1649288945. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Toby Levenson works

Medicare's Facility Affiliation Data lists Toby Levenson at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Toby Levenson is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Toby Levenson as a member of this group (CMS data updated 2026-10-02).

  • UCSF Health Medical Foundation40 clinicians in the group

Specialties

Find other Allergy/Immunology doctors in California →

Other allergist and immunologists in Redwood City

Clinicians with the same Medicare primary specialty in Redwood City, CA — not a recommendation.

All allergist and immunologists in Redwood City →

Clinician information

CredentialMD
Medical schoolNorthwestern University Feinberg Medical School
Graduation year1990
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1649288945
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians