Thomas Geoghegan Weiser, MD
Thomas Geoghegan Weiser is a Surgical Critical Care Physician provider (Surgery) practicing in Palo Alto, CA, registered in the NPPES registry with NPI 1144201625 since 2005. The credential MD stands for Doctor of Medicine. Practices at Lucile Packard Stanford Children'S Hospital (listed at the same practice address in NPPES).
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1144201625 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Thomas Geoghegan Weiser |
| Credential | MD |
| Sex | Male |
| Practice address | 300 PASTEUR DR, Palo Alto, CA, 94304 |
| Phone | 6507234000 |
| Enumeration date | 2005-11-10 |
| Last updated in NPPES | 2024-04-29 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 208600000X | Surgery Physician | Secondary | A84864 | CA |
| 2086S0102X | Surgical Critical Care Physician | Primary | A84864 | 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: Thomas Weiser, MD NPI: 1144201625 Taxonomy: 2086S0102X (Surgical Critical Care Physician) Address: 300 PASTEUR DR, Palo Alto, CA, 94304
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1851391940 | Paul Martin | Individual | Anesthesiology Physician | Palo Alto, CA |
| 1528058716 | Frank Seidel | Individual | Diagnostic Radiology Physician | Palo Alto, CA |
| 1639153661 | Stanley Deresinski | Individual | Infectious Disease Physician | Palo Alto, CA |
| 1427026442 | Lorinda Chung | Individual | Rheumatology Physician | Palo Alto, CA |
| 1326009572 | Gordon Lee | Individual | Plastic Surgery Physician | Palo Alto, CA |
| 1972567246 | Electron Kebebew | Individual | Surgery Physician | Palo Alto, CA |
| 1578528733 | Irene Jun | Individual | Pediatrics Physician | Palo Alto, CA |
| 1457303646 | Barry Press | Individual | Plastic Surgery Physician | Palo Alto, CA |
Verify this record
Cross-check NPI 1144201625 against the authoritative CMS record: view Thomas Geoghegan Weiser 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 2024-04-29.