Dr. Mark Flannery, D.C.

Dr. Mark Flannery is a Nutrition Chiropractor provider (Chiropractor) practicing in Simi Valley, CA, registered in the NPPES registry with NPI 1902076482 since 2008. The credential DC stands for Doctor of Chiropractic.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI	1902076482
Entity type	Individual (Type 1)
Name	Dr. Mark Flannery
Credential	D.C.
Sex	Male
Practice address	Simi Valley, CA, 93065
Phone	8059917455
Fax	8059917466
Enumeration date	2008-03-11
Last updated in NPPES	2008-03-11

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

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
111NN1001X	Nutrition Chiropractor	Primary	30513	CA

DC — Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC credential

Copy-ready billing details

Provider: Mark Flannery, D.C.
NPI: 1902076482
Taxonomy: 111NN1001X (Nutrition Chiropractor)
Address: Simi Valley, CA, 93065

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1982874467	Vera Flannery	Individual	Chiropractor	Simi Valley, CA

Verify this record

Cross-check NPI 1902076482 against the authoritative CMS record: view Dr. Mark Flannery 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 Mark Flannery?

Mark Flannery is registered in NPPES with the primary taxonomy of Nutrition Chiropractor. 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 2008-03-11.