Karen L Fields, MD

Karen L Fields is a Internal Medicine Physician provider (Internal Medicine) practicing in Camarillo, CA, registered in the NPPES registry with NPI 1497779656 since 2006. The credential MD stands for Doctor of Medicine. Practices at Karen L Fields MD Inc (listed at the same practice address in NPPES).

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NPI	1497779656
Entity type	Individual (Type 1)
Name	Karen L Fields
Credential	MD
Sex	Female
Practice address	1601 CARMEN DR STE 106, Camarillo, CA, 93010
Phone	8187883308
Fax	8053898188
Enumeration date	2006-07-27
Last updated in NPPES	2023-09-14

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
207R00000X	Internal Medicine Physician	Primary	A45315	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: Karen Fields, MD
NPI: 1497779656
Taxonomy: 207R00000X (Internal Medicine Physician)
Address: 1601 CARMEN DR STE 106, Camarillo, CA, 93010

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1144009846	Karen L Fields MD Inc	Organization	Internal Medicine Physician	Camarillo, CA
1861372682	Liz Gahit	Individual	Psychiatric/Mental Health Nurse Practitioner	Camarillo, CA
1679447726	Michael Takagi	Individual	Psychiatric/Mental Health Nurse Practitioner	Camarillo, CA

Verify this record

Cross-check NPI 1497779656 against the authoritative CMS record: view Karen L Fields 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 Karen Fields?

Karen Fields is registered in NPPES with the primary taxonomy of Internal Medicine 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 2023-09-14.