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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.

DR. ELISABETH RYZEN M.D.
NPI 1992745707
Internal Medicine - Endocrinology, Diabetes & Metabolism in Palo Alto, CA

Active since June 08, 2006PECOS Enrolled
3801 MIRANDA AVE, 111A, PALO ALTO, CA 94304(650) 493-5000 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Elisabeth Ryzen M.d. NPPES

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

DR. ELISABETH RYZEN M.D. (NPI 1992745707) is an individual endocrinology, diabetes & metabolism provider in Palo Alto, California, licensed in California (G42721) and active in the NPI registry since June 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1992745707
Entity TypeIndividualFemale
Primary Taxonomy207RE0101X
Provider Legal NameDR. ELISABETH RYZENCredential: M.D.
Location Address3801 MIRANDA AVE, 111APalo Alto, CA 94304-1207
Mailing Address3801 Miranda Ave, 111aPalo Alto, CA 94304-1207 · (650) 493-5000
Phone(650) 493-5000
Sole ProprietorNo
Enumeration DateJune 8, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1992745707 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians
Taxonomy Code207RE0101X
License✔ Licensed in CA · G42721
Definition
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.
3801 MIRANDA AVE, Palo Alto, CA 94304
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Elisabeth Ryzen 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94304 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
$156.67 typical visit price
range $70.37 – $206.04
Typical copayment $39.16 (range $17.59 – $51.51)
Most-billed visit code 99204
Established Patient
$121.77 typical visit price
range $23.96 – $169.60
Typical copayment $30.44 (range $5.99 – $42.40)
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.

DR. LAURA ELIZABETH STODDARD PHARMD
Pharmacist
3801 MIRANDA AVE
PALO ALTO, CA 94304
Santa Clara County (650) 493-5000
DR. KEVIN MCKENNA PH.D.
Psychologist (Clinical)
3801 MIRANDA AVE
PALO ALTO, CA 94304
Santa Clara County (650) 493-5000
VALLANCE WA-LUN AU-YEUNG PHARMD
Pharmacist
3801 MIRANDA AVE
PALO ALTO, CA 94304
Santa Clara County (650) 493-5000
ARLENE VICENTE-VELASCO
Registered Nurse
3801 MIRANDA AVE
PALO ALTO, CA 94304
Santa Clara County (650) 493-5000
MAHNOOSH KUHBANANI SEIFODDINI M.D.
Internal Medicine
3801 MIRANDA AVE, VA PALO ALTO HEALTH CARE SYSTEM (111STC)
PALO ALTO, CA 94304
Santa Clara County (209) 946-3400
DR. EDWARD LEE COHEN MD
Obstetrics & Gynecology
3801 MIRANDA AVE, #112
PALO ALTO, CA 94304
Santa Clara County (650) 493-5000
MRS. JEAN JONES GURGA OTR/L
Occupational Therapist
3801 MIRANDA AVE, PMRS (117)
PALO ALTO, CA 94304
Santa Clara County (650) 493-5000
MS. ELLEN WHITE FORD LCSW, MSW, MPH
Social Worker (Clinical)
3801 MIRANDA AVE, VAPAHCS SOCIAL WORK SERVICE, 122 PA
PALO ALTO, CA 94304
Santa Clara County (650) 493-5000

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 Elisabeth Ryzen's NPI number?

The NPI number for Elisabeth Ryzen is 1992745707. It was assigned to this individual provider in the NPPES registry on June 8, 2006.

Where is Elisabeth Ryzen located?

Elisabeth Ryzen practices at 3801 Miranda Ave 111A, Palo Alto, CA 94304. The listed phone number is (650) 493-5000.

What is Elisabeth Ryzen's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Is Elisabeth Ryzen enrolled in Medicare?

Yes. Elisabeth Ryzen is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Elisabeth Ryzen was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 35 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.