DR. WILLIAM T DENMAN MD
NPI 1376533794
Anesthesiology in Boston, MA
About Dr. William T Denman Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. WILLIAM T DENMAN MD (NPI 1376533794) is an individual anesthesiology provider in Boston, Massachusetts, licensed in Massachusetts (76104) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS and is a graduate of Other (1985).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. William T Denman Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
3Medicare enrollment records show William Denman reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,360 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,234 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 128 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BOSTON, MA 02114
BOSTON, MA 02114
BOSTON, MA 02114
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is William Denman's NPI number?
The NPI number for William Denman is 1376533794. It was assigned to this individual provider in the NPPES registry on October 26, 2005.
Where is William Denman located?
William Denman practices at 55 Fruit St Anesthesia Associates Cln 309, Boston, MA 02114. The listed phone number is (617) 726-3030.
What is William Denman's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is William Denman enrolled in Medicare?
Yes. William Denman is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for William Denman's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Denman reassigns Medicare benefits to 3 organizations: Massachusetts General Physicians Organization Inc (Boston, MA), The General Hospital Corporation (Boston, MA) and The Shriners' Hospital For Children (Boston, MA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for William Denman's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does William Denman accept?
Health plans from Taro Health list William Denman as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for William Denman was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. William T Denman, MD · NPI 1376533794
Anesthesiology physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since October 26, 2005.
## Identity
- **NPI:** 1376533794 (Entity type: Individual)
- **Enumerated:** October 26, 2005
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 76104 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 55 FRUIT ST, ANESTHESIA ASSOCIATES CLN 309, Boston, MA 02114-2621
- **Phone:** (617) 726-3030 · **Fax:** (617) 724-8500
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Massachusetts General Physicians Organization Inc (NPI 1801874573, Boston, MA); The General Hospital Corporation (NPI 1023049236, Boston, MA); The Shriners' Hospital For Children (NPI 1366886525, Boston, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1985
## Record status
- **NPPES last updated:** July 13, 2026
- **Other identifiers:** Other J12661 (MA); Medicaid 3093735 (MA); Other 737707 (MA)
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Source: [NPI Profile](https://npiprofile.com/npi/1376533794) · Data from the CMS NPPES public registry.