Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Medical Oncology Associates of San Diego A Medical Group Inc

Hematology & Oncology Physician in San Diego, CA · enumerated 2006 · authorized official Marie Shieh, Specialist/Chief Physician.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1629046925

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Registry record

Entity type Organization (Type 2)

Legal business name Medical Oncology Associates of San Diego A Medical Group Inc

Practice address 3075 Health Center Dr, Suite 102, San Diego, CA, 92123

Phone (858) 637-7888

Fax (858) 637-7887

Enumeration date Mar 10, 2006

Last updated in NPPES May 30, 2024

Taxonomy & classification

207RH0000X Hematology (Internal Medicine) Physician Allopathic & Osteopathic Physicians Secondary

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians Primary

207RX0202X Medical Oncology Physician Allopathic & Osteopathic Physicians Secondary

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers Secondary

Authorized official

Name Marie Shieh

Title Specialist/Chief Physician

Phone (858) 637-7888

Other identifiers

Identifier	Type	State	Issuer
800298078	Medicaid	CA	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What type of organization is Medical Oncology Associates of San Diego A Medical Group Inc?

Medical Oncology Associates of San Diego A Medical Group Inc is registered in NPPES as a Hematology & Oncology Physician (its primary provider taxonomy).

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-05-30.