Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Betty M Tam, MD

Internal Medicine Physician in Livermore, CA · enumerated 2006.

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

National Provider Identifier

1770532244

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Registry record

Entity type Individual (Type 1)

Name Betty M Tam

Credential MD

Sex Female

Practice address 1133 East Stanley Blvd, # 101, Livermore, CA, 94550

Phone (925) 454-4280

Fax (925) 454-4284

Enumeration date May 10, 2006

Last updated in NPPES Oct 31, 2011

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License A86417 (CA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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

How do I verify Betty Tam's NPI record?

Cross-check NPI 1770532244 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1770532244 active?

Yes, as of the latest NPPES snapshot, NPI 1770532244 is active (record last updated 2011-10-31).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-10-31.