Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. MARGARET RYAN MD, MPH
NPI 1619977618
Preventive Medicine - Preventive Medicine/Occupational Environmental Medicine in San Diego, CA

Q: What is Margaret Ryan's NPI number?

The NPI number for Margaret Ryan is 1619977618. It was assigned to this individual provider in the NPPES registry on August 1, 2005.

Q: What is Margaret Ryan's specialty?

The primary specialty registered for this NPI is Preventive Medicine, specializing in Preventive Medicine/Occupational Environmental Medicine, with taxonomy code 2083P0500X.

Q: When was this NPI record last updated?

The NPPES record for Margaret Ryan 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 42 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.

Active since August 01, 2005

NHRC CODE 25, BOX 85122, SAN DIEGO, CA 92186(619) 553-8097(619) 553-7601 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

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About Dr. Margaret Ryan Md, Mph NPPES

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

DR. MARGARET RYAN MD, MPH (NPI 1619977618) is an individual preventive medicine/occupational environmental medicine provider in San Diego, California, licensed in Maryland (D42576) and active in the NPI registry since August 2005.

NPPES Registry Identity

NPI1619977618

Entity TypeIndividualFemale

Primary Taxonomy2083P0500X

Provider Legal NameDR. MARGARET RYANCredential: MD, MPH

Location AddressNHRC CODE 25, BOX 85122San Diego, CA 92186-5122

Mailing Address12244 Caminito Del Mar SandsSan Diego, CA 92130-2521 · (858) 259-4234

Phone(619) 553-8097

Fax(619) 553-7601

Sole ProprietorNo

Enumeration DateAugust 1, 2005

Last NPPES UpdateJuly 13, 2026

✔ NPI 1619977618 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPreventive Medicine · Preventive Medicine/Occupational Environmental MedicineAllopathic & Osteopathic Physicians

Taxonomy Code2083P0500X

License✔ Licensed in MD · D42576

Definition

A preventive medicine physician who specializes in preventive medicine/occupational-environmental medicine, which is focused on protecting the population from occupational and environmental conditions.

NHRC CODE 25, San Diego, CA 92186

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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 Margaret Ryan's NPI number?

The NPI number for Margaret Ryan is 1619977618. It was assigned to this individual provider in the NPPES registry on August 1, 2005.

Where is Margaret Ryan located?

Margaret Ryan practices at Nhrc Code 25 Box 85122, San Diego, CA 92186. The listed phone number is (619) 553-8097.

What is Margaret Ryan's specialty?

The primary specialty registered for this NPI is Preventive Medicine, specializing in Preventive Medicine/Occupational Environmental Medicine, with taxonomy code 2083P0500X.

When was this NPI record last updated?

The NPPES record for Margaret Ryan 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 42 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.