Mark Lones, M.D.
Mark Lones is a Anatomic Pathology & Clinical Pathology Physician provider (Pathology) practicing in Orange, CA, registered in the NPPES registry with NPI 1780752139 since 2006. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1780752139 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Mark Lones |
| Credential | M.D. |
| Sex | Male |
| Practice address | 1100 W STEWART DR, Orange, CA, 92868 |
| Phone | 7147718176 |
| Enumeration date | 2006-12-02 |
| Last updated in NPPES | 2007-10-11 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 207ZP0102X | Anatomic Pathology & Clinical Pathology Physician | Primary | A43615 | CA |
MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 00A436150 | Other | CA | MEDI-CAL |
Copy-ready billing details
Provider: Mark Lones, M.D. NPI: 1780752139 Taxonomy: 207ZP0102X (Anatomic Pathology & Clinical Pathology Physician) Address: 1100 W STEWART DR, Orange, CA, 92868
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1255331385 | Lianjie Du | Individual | Psychiatry Physician | Orange, CA |
| 1720080294 | Jack Lianjie Du, M.D., A Medical Corporation | Organization | Psychiatry Physician | Orange, CA |
| 1609850320 | St Joseph Hospital of Orange | Organization | End-Stage Renal Disease (ESRD) Treatment Clinic/Center | Orange, CA |
| 1912982216 | St Joseph Hospital of Orange | Organization | General Acute Care Hospital | Orange, CA |
| 1285619254 | St Joseph Hospital of Orange | Organization | Psychiatric Hospital Unit | Orange, CA |
| 1184691867 | Jonathan Cohen | Individual | Anesthesiology Physician | Orange, CA |
| 1568421832 | Norichika Okada | Individual | Anesthesiology Physician | Orange, CA |
| 1639124811 | Matthew Mullarky | Individual | Emergency Medical Services (Emergency Medicine) Physician | Orange, CA |
Verify this record
Cross-check NPI 1780752139 against the authoritative CMS record: view Mark Lones 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
Is NPI 1780752139 active?
How do I verify Mark Lones's NPI record?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-10-11.