Dr. David D. Chi, M.D.

Dr. David D. Chi is a Surgery Physician provider (Surgery) practicing in Thousand Oaks, CA, registered in the NPPES registry with NPI 1881746428 since 2007. The credential MD stands for Doctor of Medicine.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI	1881746428
Entity type	Individual (Type 1)
Name	Dr. David D. Chi
Credential	M.D.
Sex	Male
Practice address	Thousand Oaks, CA, 91360
Phone	8054977785
Fax	8054977728
Enumeration date	2007-01-16
Last updated in NPPES	2011-07-08

Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
208600000X	Surgery Physician	Primary	G84570	CA
2086X0206X	Surgical Oncology Physician	Secondary	G84570	CA

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

Copy-ready billing details

Provider: David Chi, M.D.
NPI: 1881746428
Taxonomy: 208600000X (Surgery Physician)
Address: Thousand Oaks, CA, 91360

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1154649796	David D. Chi, M.D., F.A.C.S., A Medical Corp.	Organization	Surgical Oncology Physician	Thousand Oaks, CA
1871866426	Edward M. Feldman, D.O., Facog, Inc	Organization	Obstetrics & Gynecology Physician	Thousand Oaks, CA

Verify this record

Cross-check NPI 1881746428 against the authoritative CMS record: view Dr. David D. Chi on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

What specialty is David Chi?

David Chi is registered in NPPES with the primary taxonomy of Surgery Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2011-07-08.