Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

David Kenneth Trefflich, MD

Internal Medicine Physician in Santa Maria, CA · enumerated 2013 · practices at Community Health Centers of the Central Coast Inc.

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

National Provider Identifier

1861836942

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Registry record

Entity type Individual (Type 1)

Name David Kenneth Trefflich

Credential MD

Sex Male

Practice address 430 S Blosser Rd, Santa Maria, CA, 93458

Phone (805) 361-8900

Fax (805) 361-8990

Enumeration date Apr 19, 2013

Last updated in NPPES Oct 28, 2020

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License A170337 (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

What is the NPI number for David Trefflich?

The National Provider Identifier (NPI) for David Trefflich is 1861836942, a Type 1 (individual) record in the CMS NPPES registry.

Where does David Trefflich practice?

The practice location on file with NPPES is in Santa Maria, CA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-10-28.