William Austin Critchlow, MD
William Austin Critchlow is a Urology Physician provider (Urology) practicing in Fairview Heights, IL, registered in the NPPES registry with NPI 1700296621 since 2014. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1700296621 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | William Austin Critchlow |
| Credential | MD |
| Sex | Male |
| Practice address | 326 FOUNTAINS PKWY, Fairview Heights, IL, 62208 |
| Phone | 6182773109 |
| Enumeration date | 2014-04-30 |
| Last updated in NPPES | 2021-12-01 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 208800000X | Urology Physician | Secondary | 2019017136 | MO |
| 208800000X | Urology Physician | Primary | 36150011 | IL |
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 Critchlow, MD NPI: 1700296621 Taxonomy: 208800000X (Urology Physician) Address: 326 FOUNTAINS PKWY, Fairview Heights, IL, 62208
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1861587586 | Xrt III, Inc | Organization | Specialist | Fairview Heights, IL |
| 1427109248 | Seth Strope | Individual | Urology Physician | Fairview Heights, IL |
| 1801042700 | James Rybak | Individual | Urology Physician | Fairview Heights, IL |
| 1427646496 | Joshua Gibson | Individual | Nurse Practitioner | Fairview Heights, IL |
| 1528901287 | Urology of St. Louis, Inc. | Organization | Urology Physician | Fairview Heights, IL |
Verify this record
Cross-check NPI 1700296621 against the authoritative CMS record: view William Austin Critchlow 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 2021-12-01.