William Walker, MD
William Walker, MD is a pediatric gastroenterology physician practicing in Boston, MA. The NPI was issued on January 13, 2006, and the record was last updated in NPPES on July 13, 2026.
Taxonomies and licenses
| Taxonomy | Code | License |
|---|---|---|
| Pediatric Gastroenterology Physician Primary | 2080P0206X | 31989 (MA) |
Practice location
Massachusetts General Hospital
Boston, MA 02114
Local context
Active NPPES records list 119 providers with pediatric gastroenterology physician as the primary taxonomy within 25 miles of this practice location's ZIP code, 117 of them within 10 miles.
The same primary taxonomy is listed by 139 in Massachusetts and 2,776 nationwide.
These are counts from NPPES records, not a ranking or recommendation. Distances are measured between ZIP code centers, not street addresses.
Record history
- Name on record
- Dr. William Alian Walker
- Status
- Active
- NPI issued
- Last updated in NPPES
Is this your record? Updates are made through NPPES, the official National Plan and Provider Enumeration System.
NPPES data as of · Source: CMS NPPES
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