Dr. William Alexander Block, M.D.
Dr. William Alexander Block is a Clinical Pathology/Laboratory Medicine Physician provider (Pathology) practicing in Troy, MI, registered in the NPPES registry with NPI 1730358854 since 2008. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1730358854 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. William Alexander Block |
| Credential | M.D. |
| Sex | Male |
| Practice address | 500 KIRTS BLVD, Troy, MI, 48084 |
| Phone | 2488246600 |
| Fax | 2483241477 |
| Enumeration date | 2008-02-22 |
| Last updated in NPPES | 2012-07-24 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 207ZP0105X | Clinical Pathology/Laboratory Medicine Physician | Primary | L1250464 | MI |
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: William Block, M.D. NPI: 1730358854 Taxonomy: 207ZP0105X (Clinical Pathology/Laboratory Medicine Physician) Address: 500 KIRTS BLVD, Troy, MI, 48084
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1477544823 | Phoenix Home Health Care, LLC | Organization | Home Health Agency | Troy, MI |
| 1588631147 | Annemarie Daly | Individual | Internal Medicine Physician | Troy, MI |
| 1518902741 | Erlinda Delpilar | Individual | Family Medicine Physician | Troy, MI |
| 1336153295 | Vpa PC | Organization | Family Medicine Physician | Troy, MI |
| 1629172317 | Ronaldo San Juan | Individual | Diagnostic Radiology Physician | Troy, MI |
| 1427120336 | Vpa PC | Organization | Clinical Medical Laboratory | Troy, MI |
| 1871666784 | Vpa PC | Organization | Portable X-ray and/or Other Portable Diagnostic Imaging Supplier | Troy, MI |
| 1174752463 | Kinda Hayek | Individual | Anatomic Pathology & Clinical Pathology Physician | Troy, MI |
Verify this record
Cross-check NPI 1730358854 against the authoritative CMS record: view Dr. William Alexander Block 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 2012-07-24.