WILLIAM JAMES CALHOUN (MD) – Pulmonary Disease Physician, NPI 1811056567
Pulmonary Disease Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
13,290 INTERNAL MEDICINE in TX
Loading map...
Provider Addresses for WILLIAM JAMES CALHOUN (MD)
301, University Boulevard - 6th Street, Galveston, Galveston County, Texas, 77550, United States
GALVESTON, TX 775555302
Phone: (409) 772-2222
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
Loading prescription activity...
Open Payments (CMS)
CMS reports 183 Open Payments records for all available years, with a total value of $284,314.
Total Amount is formed as General ($284,314) + Research ($0) + Ownership ($0) = $284,314.
Last reported payment date: 2024-12-12 • Largest payer in this snapshot: GENZYME CORPORATION ($206,270).
Total Amount
$284,314
General + Research + Ownership
Payments
183
Total payment records
General Amount
$284,314
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-12
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| GENZYME CORPORATION | $206,270 |
| Regeneron Healthcare Solutions, Inc. | $63,248 |
| Merck Sharp & Dohme LLC | $11,285 |
| Novartis Pharmaceuticals Corporation | $2,700 |
| PFIZER INC. | $500 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2005-12-30
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20051230000027 | I | Internal Medicine | TX | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 94726 | Test to determine lung volumes using sensors | 85 | 85 | $0 |
| 94729 | Test to examine how well the lungs exchange gases | 84 | 84 | $0 |
| 94010 | Test to measure expiratory airflow and volume | 70 | 70 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 54 | 40 | $0 |
| 94618 | Test for exercise-induced lung stress | 41 | 40 | $0 |
Insurance plans in this area (ZIP 77555)
Loading plans...
Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| PULMONARY DISEASE | TX | 94060 | Measurement and graphic recording of the amount and speed of breathed air, before and following medication administration | 27 | 27 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| - | TX | |
| - | TX | |
| N E U R O L O G Y | NY | |
| - | NY | |
| Sleep Medicine, Critical Care (Intensivists) | TX | |
| G A S T R O E N T E R O L O G Y | TX | |
| A N E S T H E S I O L O G Y | TX | |
| Orthopedic Surgery | TX | |
| O P H T H A L M O L O G Y | TX | |
| N E P H R O L O G Y | TX |
Reviews
All reviews are moderated before publication. Reviews reflect users' opinions; we do not verify the accuracy of individual reviews.
No reviews yet. Be the first to share your experience — your opinion helps families compare providers.