Theodore Hobart Welling, MD
Theodore Hobart Welling is a Surgery Physician provider (Surgery) practicing in La Jolla, CA, registered in the NPPES registry with NPI 1023109683 since 2006. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1023109683 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Theodore Hobart Welling |
| Credential | MD |
| Sex | Male |
| Practice address | 3855 HEALTH SCIENCES DR, La Jolla, CA, 92093 |
| Phone | 8009268273 |
| Fax | 8885398781 |
| Enumeration date | 2006-09-27 |
| Last updated in NPPES | 2025-11-17 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 208600000X | Surgery Physician | Primary | C196248 | CA |
| 208600000X | Surgery Physician | Secondary | 4301073979 | MI |
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 |
|---|---|---|---|
| 4754714 | Medicaid | MI | — |
Copy-ready billing details
Provider: Theodore Welling, MD NPI: 1023109683 Taxonomy: 208600000X (Surgery Physician) Address: 3855 HEALTH SCIENCES DR, La Jolla, CA, 92093
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1356327316 | Hitendra Patel | Individual | Medical Oncology Physician | La Jolla, CA |
| 1720051493 | Rafael Bejar | Individual | Hematology & Oncology Physician | La Jolla, CA |
| 1265408678 | Teresa Helsten | Individual | Hematology & Oncology Physician | La Jolla, CA |
| 1306815477 | Karin Morris | Individual | Physician Assistant | La Jolla, CA |
| 1508828179 | Michael Mchale | Individual | Gynecologic Oncology Physician | La Jolla, CA |
| 1275598591 | Jill Attia | Individual | Nurse Practitioner | La Jolla, CA |
| 1629093927 | Barbara Parker | Individual | Hematology & Oncology Physician | La Jolla, CA |
| 1881610137 | Ajay Pal Sandhu | Individual | Radiation Oncology Physician | La Jolla, CA |
Verify this record
Cross-check NPI 1023109683 against the authoritative CMS record: view Theodore Hobart Welling 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
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2025-11-17.