Dr. Michael Cassidy, M.D.
Dr. Michael Cassidy is a Specialist provider (Specialist) practicing in Berkeley, CA, registered in the NPPES registry with NPI 1780673442 since 2005. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1780673442 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Michael Cassidy |
| Credential | M.D. |
| Sex | Male |
| Practice address | 2001 DWIGHT WAY, Berkeley, CA, 94704 |
| Phone | 5102041591 |
| Fax | 5102046440 |
| Enumeration date | 2005-10-17 |
| Last updated in NPPES | 2007-07-08 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 174400000X | Specialist | Primary | G330960 | 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 |
|---|---|---|---|
| GR0089940 | Medicaid | CA | — |
Copy-ready billing details
Provider: Michael Cassidy, M.D. NPI: 1780673442 Taxonomy: 174400000X (Specialist) Address: 2001 DWIGHT WAY, Berkeley, CA, 94704
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1295738805 | Bay Area Rehabilitation Medical Group | Organization | Physical Medicine & Rehabilitation Physician | Berkeley, CA |
| 1518963693 | Lifelong Medical Care | Organization | Family Medicine Physician | Berkeley, CA |
| 1881694198 | Erika Bruce | Individual | Adult Health Nurse Practitioner | Berkeley, CA |
| 1053312355 | Patrick Swift | Individual | Radiation Oncology Physician | Berkeley, CA |
| 1043208457 | Northern California Hematology and Oncology Consultants, Inc | Organization | Hematology & Oncology Physician | Berkeley, CA |
| 1780672048 | David Irwin | Individual | Hematology & Oncology Physician | Berkeley, CA |
| 1093704637 | Anne-Renne Hartman | Individual | Specialist | Berkeley, CA |
| 1275522823 | Bay Area Oncology Hematology Medical Group | Organization | Specialist | Berkeley, CA |
Verify this record
Cross-check NPI 1780673442 against the authoritative CMS record: view Dr. Michael Cassidy 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
How do I verify Michael Cassidy's NPI record?
Is NPI 1780673442 active?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.