Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Mark Douglas Fullmer, D.C.
Chiropractor in Yuba City, CA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1003023425
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Dr. Mark Douglas Fullmer
Credential D.C.
Sex Male
Practice address 471 Ainsley Ave, Yuba City, CA, 95991
Phone (530) 755-3200
Fax (530) 755-3205
Enumeration date May 16, 2007
Last updated in NPPES Aug 18, 2010
Taxonomy & licenses
DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders.
About the DC credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| DC0205900 | Medicaid | CA | - |
| 1811084973 | Other | CA | FACILITY NPI NUMBER |
| GDC000590 | Medicaid | CA | - |
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.
Frequently asked questions
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.
What specialty is Mark Fullmer?
Mark Fullmer is registered in NPPES with the primary taxonomy of Chiropractor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Price Chiropractic, Inc Chiropractor · Yuba City, CA NPI 1811084973 Charles Price Chiropractor · Yuba City, CA NPI 1457568867 Debbie Knight Clinical Social Worker · Yuba City, CA NPI 1891021564 Medical Support Los Angeles A Medical Corporation Independent Medical Examiner Physician · Yuba City, CA NPI 1306360458 Nicholas Shannon Chiropractor · Yuba City, CA NPI 1700485455
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-08-18.