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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. RALPH MASAYUKI SHISHIDO M.D.
NPI 1184631681
Pathology - Anatomic Pathology & Clinical Pathology in San Diego, CA

Active since August 01, 2006
591 CAMINO DE LA REINA, SUITE 200, SAN DIEGO, CA 92108(619) 325-8748(619) 325-8732 Get Directions Write a Review

NPPES record last updated: July 19, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Ralph Masayuki Shishido M.d. NPPES

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

DR. RALPH MASAYUKI SHISHIDO M.D. (NPI 1184631681) is an individual anatomic pathology & clinical pathology provider in San Diego, California, licensed in California (G07259) and active in the NPI registry since August 2006.

NPPES Registry Identity

NPI1184631681
Entity TypeIndividualMale
Primary Taxonomy207ZP0102X
Provider Legal NameDR. RALPH MASAYUKI SHISHIDOCredential: M.D.
Location Address591 CAMINO DE LA REINA, SUITE 200San Diego, CA 92108-3102
Mailing Address591 Camino De La Reina, Suite 200San Diego, CA 92108-3102 · (619) 325-8748 · Fax (619) 325-8732
Phone(619) 325-8748
Fax(619) 325-8732
Sole ProprietorNo
Enumeration DateAugust 1, 2006
Last NPPES UpdateJuly 19, 2026
✔ NPI 1184631681 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPathology · Anatomic Pathology & Clinical PathologyAllopathic & Osteopathic Physicians
Taxonomy Code207ZP0102X
License✔ Licensed in CA · G07259
Definition
A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.
591 CAMINO DE LA REINA, San Diego, CA 92108
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Other Identifiers 1

Medicaid00G072590CA

Other Providers at the Same Location NPPES 13

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MRS. RICHARD KASTANIAS SR.
Marriage & Family Therapist
591 CAMINO DE LA REINA, SUITE 918
SAN DIEGO, CA 92108
San Diego County (619) 417-4923
OMAR M ALHASSOON PH.D.
Clinical Neuropsychologist
591 CAMINO DE LA REINA, SUITE 1217
SAN DIEGO, CA 92108
San Diego County (619) 800-8743
SARAH SHARPE
Social Worker (Clinical)
591 CAMINO DE LA REINA
SAN DIEGO, CA 92108
San Diego County (760) 487-8295
DR. JON WILLIAM CASSELL DDS
Dentist (General Practice)
591 CAMINO DE LA REINA, SUITE 412
SAN DIEGO, CA 92108
San Diego County (619) 220-7475
HENGAMEH MOTAGHED PHD CLINICAL PSYCHOL
Psychologist
591 CAMINO DE LA REINA, 918
SAN DIEGO, CA 92108
San Diego County (619) 969-6790
MRS. SUSAN REEDER GRAF-COTE MFT
Marriage & Family Therapist
591 CAMINO DE LA REINA, SUITE 918
SAN DIEGO, CA 92108
San Diego County (858) 414-0411
DR. DAVID JAMES BAINER D,D,S,
Dentist
591 CAMINO DE LA REINA, SUITE 412
SAN DIEGO, CA 92108
San Diego County (619) 220-7475
WESTERN HEALTH RESOURCES
Home Health
591 CAMINO DE LA REINA, SUITE #1010 B
SAN DIEGO, CA 92108
San Diego County (619) 293-6820

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 Ralph Shishido's NPI number?

The NPI number for Ralph Shishido is 1184631681. It was assigned to this individual provider in the NPPES registry on August 1, 2006.

Where is Ralph Shishido located?

Ralph Shishido practices at 591 Camino De La Reina Suite 200, San Diego, CA 92108. The listed phone number is (619) 325-8748.

What is Ralph Shishido's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.

When was this NPI record last updated?

The NPPES record for Ralph Shishido was last updated on July 19, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.