WILLIAM JAMES CALHOUN MD
NPI 1811056567
Internal Medicine - Pulmonary Disease in Galveston, TX
About William James Calhoun Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM JAMES CALHOUN MD (NPI 1811056567) is an individual pulmonary disease provider in Galveston, Texas, licensed in Texas (N1274) and active in the NPI registry since December 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
William James Calhoun Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show William Calhoun reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Galveston, TX 77555
- Reassigned Medicare billing, Texas enrollment
- 2,222 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.
Areas of Expertise CMS Part B claims 10
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 77555 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Referred Medical Equipment & Supplies CMS DME claims 5
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
GALVESTON, TX 77555
GALVESTON, TX 77555
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 Calhoun's NPI number?
The NPI number for William Calhoun is 1811056567. It was assigned to this individual provider in the NPPES registry on December 8, 2006.
Where is William Calhoun located?
William Calhoun practices at 301 University Blvd, Galveston, TX 77555. The listed phone number is (409) 772-2222.
What is William Calhoun's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.
Is William Calhoun enrolled in Medicare?
Yes. William Calhoun is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for William Calhoun's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Calhoun reassigns Medicare benefits to Utmb Faculty Group Practice (Galveston, TX). The 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 Calhoun's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for William Calhoun was last updated on January 24, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years 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.
# William James Calhoun, MD · NPI 1811056567
Pulmonary Disease physician in Galveston, Texas. Individual provider, active in the CMS NPPES registry since December 8, 2006.
## Identity
- **NPI:** 1811056567 (Entity type: Individual)
- **Enumerated:** December 8, 2006
- **Primary specialty:** Internal Medicine - Pulmonary Disease · taxonomy 207RP1001X
- **State license:** N1274 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 301 UNIVERSITY BLVD, Galveston, TX 77555-5302
- **Phone:** (409) 772-2222
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Utmb Faculty Group Practice (NPI 1942241146, Galveston, TX), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** January 24, 2020
- **Other identifiers:** Medicaid 178345801 (TX)
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Source: [NPI Profile](https://npiprofile.com/npi/1811056567) · Data from the CMS NPPES public registry.