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Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

HALLIE RYAN
NPI 1639082415
Genetic Counselor, MS in Sunnyvale, CA

Active since September 23, 2026
301 OLD SAN FRANCISCO RD, SUNNYVALE, CA 94086(408) 730-6145 Get Directions Write a Review

NPPES record added: September 23, 2026. Verified against the NPPES registry weekly; last sync: October 11, 2026.

About Hallie Ryan NPPES

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

HALLIE RYAN (NPI 1639082415) is an individual genetic counselor, ms provider in Sunnyvale, California, licensed in California (GC002125) and active in the NPI registry since September 2026.

NPPES Registry Identity

NPI1639082415
Entity TypeIndividualFemale
Primary Taxonomy170300000X
Provider Legal NameHALLIE RYAN
Location Address301 OLD SAN FRANCISCO RDSunnyvale, CA 94086-6386
Mailing Address301 Old San Francisco RdSunnyvale, CA 94086-6386
Phone(408) 730-6145
Sole ProprietorNo
Enumeration DateSeptember 23, 2026
NPPES CertifiedSeptember 23, 2026
✔ NPI 1639082415 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyGenetic Counselor, MSOther Service Providers
Taxonomy Code170300000X
License✔ Licensed in CA · GC002125
Definition
A masters trained health care provider who collects and interprets genetic family histories; assesses the risk of disease occurrence or recurrence; identifies interventions to manage or ameliorate disease risk; educates about inheritance, testing, management, prevention, ethical issues, resources, and research; and counsels to promote informed choices and adaptation. Certification was established in 1993 by the American Board of Genetic Counseling and prior to that by the American Board of Medical Genetics. Requirements for experience, licensure, and job responsibilities vary among the states.
301 OLD SAN FRANCISCO RD, Sunnyvale, CA 94086
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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. TAN MICHAEL NGUYEN MD
Internal Medicine
301 OLD SAN FRANCISCO RD
SUNNYVALE, CA 94086
Santa Clara County (408) 730-4360
MS. VAN T VU M.D.
Family Medicine
301 OLD SAN FRANCISCO RD
SUNNYVALE, CA 94086
Santa Clara County (408) 730-4262
AISHA AMIN
Internal Medicine
301 OLD SAN FRANCISCO RD
SUNNYVALE, CA 94086
Santa Clara County (718) 334-2488
MRS. CAM LINH FERNANDEZ NP
Nurse Practitioner
301 OLD SAN FRANCISCO RD
SUNNYVALE, CA 94086
Santa Clara County (408) 739-6000
DR. KIMBERLEY FAITH MA D.O
Family Medicine
301 OLD SAN FRANCISCO RD
SUNNYVALE, CA 94086
Santa Clara County (408) 730-4262
YUEN LAM SHEK LCSW
Social Worker (Clinical)
301 OLD SAN FRANCISCO RD
SUNNYVALE, CA 94086
Santa Clara County (408) 730-2800
BRANDON HSU DPT
Physical Therapist
301 OLD SAN FRANCISCO RD
SUNNYVALE, CA 94086
Santa Clara County (408) 523-3060
CAROLINE PHILIP NP
Nurse Practitioner (Family)
301 OLD SAN FRANCISCO RD
SUNNYVALE, CA 94086
Santa Clara County (408) 524-4116

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 Hallie Ryan's NPI number?

The NPI number for Hallie Ryan is 1639082415. It was assigned to this individual provider in the NPPES registry on September 23, 2026.

Where is Hallie Ryan located?

Hallie Ryan practices at 301 Old San Francisco Rd, Sunnyvale, CA 94086. The listed phone number is (408) 730-6145.

What is Hallie Ryan's specialty?

The primary specialty registered for this NPI is Genetic Counselor, MS with taxonomy code 170300000X.

When was this NPI record last updated?

The NPPES record for Hallie Ryan was last updated on September 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 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.