Michael Lee Ditmars, MD
Michael Lee Ditmars is a Surgery Physician provider (Surgery) practicing in Antioch, CA, registered in the NPPES registry with NPI 1265440101 since 2006. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1265440101 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Michael Lee Ditmars |
| Credential | MD |
| Sex | Male |
| Practice address | 3903 LONE TREE WAY, SUITE 210, Antioch, CA, 94509 |
| Phone | 9257570800 |
| Fax | 9257572160 |
| Enumeration date | 2006-08-04 |
| Last updated in NPPES | 2021-12-01 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 208600000X | Surgery Physician | Primary | G080207 | 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: Michael Ditmars, MD NPI: 1265440101 Taxonomy: 208600000X (Surgery Physician) Address: 3903 LONE TREE WAY, SUITE 210, Antioch, CA, 94509
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1740253350 | Dennis Zai | Individual | Gastroenterology Physician | Antioch, CA |
| 1750334660 | Delta Pediatrics Medical Group, Inc. | Organization | Preferred Provider Organization | Antioch, CA |
| 1306874714 | Hamidreza Khonsari | Individual | Family Medicine Physician | Antioch, CA |
| 1215960091 | Full Care Medical Group, Inc. | Organization | Family Medicine Physician | Antioch, CA |
| 1255350534 | Sumner Seibert | Individual | Orthopaedic Surgery Physician | Antioch, CA |
| 1952403909 | Naoko Ikeda | Individual | Family Medicine Physician | Antioch, CA |
| 1578659561 | Dennis Zai, M.D., Inc | Organization | Gastroenterology Physician | Antioch, CA |
| 1750477733 | Alex A. Aslan, MD, Inc | Organization | Gastroenterology Physician | Antioch, CA |
Verify this record
Cross-check NPI 1265440101 against the authoritative CMS record: view Michael Lee Ditmars 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.
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2021-12-01.