Dr. Mark Gregory Ellis, MD
Dr. Mark Gregory Ellis is a Pediatrics Physician provider (Pediatrics) practicing in Eureka, CA, registered in the NPPES registry with NPI 1003812744 since 2005. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1003812744 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Mark Gregory Ellis |
| Credential | MD |
| Sex | Male |
| Practice address | 2200 TYDD ST, Eureka, CA, 95501 |
| Phone | 7072697051 |
| Fax | 7072697054 |
| Enumeration date | 2005-06-27 |
| Last updated in NPPES | 2018-03-17 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 208000000X | Pediatrics Physician | Primary | G65432 | 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: Mark Ellis, MD NPI: 1003812744 Taxonomy: 208000000X (Pediatrics Physician) Address: 2200 TYDD ST, Eureka, CA, 95501
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1033113535 | Suzanne Dietz | Individual | Nurse Practitioner | Eureka, CA |
| 1649278797 | Jessica Vanarsdale | Individual | Family Medicine Physician | Eureka, CA |
| 1447235858 | Michael Turner | Individual | Internal Medicine Physician | Eureka, CA |
| 1720066061 | James Matsuda | Individual | Pediatrics Physician | Eureka, CA |
| 1033183777 | Pippa Coulter | Individual | Pediatrics Physician | Eureka, CA |
| 1962456285 | Ray Miller | Individual | Family Medicine Physician | Eureka, CA |
| 1114968310 | Lorraine Byrd | Individual | Pediatrics Physician | Eureka, CA |
| 1962598680 | Ellen Taylor | Individual | Medical Physician Assistant | Eureka, CA |
Verify this record
Cross-check NPI 1003812744 against the authoritative CMS record: view Dr. Mark Gregory Ellis 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 is the NPI number for Mark Ellis?
Where does Mark Ellis practice?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2018-03-17.