DR. CHARLES A DUNCAN (MD) – Pulmonary Disease Physician, NPI 1215932462
Pulmonary Disease Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,360 CRITICAL CARE (INTENSIVISTS) in TX
Provider Addresses for DR. CHARLES A DUNCAN (MD)
10007 HUEBNER RD STE 402
SAN ANTONIO, TX 78240
Phone: (210) 692-0361
Fax: (210) 692-0151
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 192 Open Payments records for all available years, with a total value of $4,045.
Total Amount is formed as General ($4,045) + Research ($0) + Ownership ($0) = $4,045.
Last reported payment date: 2024-12-19 • Largest payer in this snapshot: AstraZeneca Pharmaceuticals LP ($800).
Total Amount
$4,045
General + Research + Ownership
Payments
192
Total payment records
General Amount
$4,045
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-19
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| AstraZeneca Pharmaceuticals LP | $800 |
| GlaxoSmithKline, LLC. | $532 |
| Actelion Pharmaceuticals US, Inc. | $199 |
| Regeneron Healthcare Solutions, Inc. | $195 |
| Ethicon Inc. | $185 |
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: 2005-05-09
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 |
|---|---|---|---|---|
| I20050509000654 | I | Critical Care (Intensivists) | 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 |
|---|---|---|---|---|
| 94060 | Test to measure expiratory airflow and volume changes before and after medication administration | 235 | 184 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 203 | 140 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 68 | 57 | $0 |
| 94727 | Test to determine lung volumes using gas dilution or washout | 54 | 49 | $0 |
| 94729 | Test to examine how well the lungs exchange gases | 53 | 48 | $0 |
Insurance plans in this area (ZIP 78240)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| CRITICAL CARE (INTENSIVISTS) | TX | 94060 | Measurement and graphic recording of the amount and speed of breathed air, before and following medication administration | 100 | 77 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Critical Care (Intensivists), Pulmonary Disease | TX | |
| Pulmonary Disease, Critical Care (Intensivists) | TX | |
| Critical Care (Intensivists), Pulmonary Disease | TX | |
| Pulmonary Disease, Critical Care (Intensivists) | TX | |
| Pulmonary Disease, Critical Care (Intensivists) | TX | |
| Pulmonary Disease, Critical Care (Intensivists), Internal Medicine | TX |
Reviews
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