DR. OSCAR JACK III CHASTAIN (MD) – Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician, NPI 1285635409
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
492 VASCULAR SURGERY in TX
Provider Addresses for DR. OSCAR JACK III CHASTAIN (MD)
707 E Marshall Ave
Longview, TX 756015545
Phone: (903) 315-4880
Type: Location
703 E Marshall Ave Ste 5008
Longview, TX 756015557
Phone: (903) 315-4880
Type: Location
701, East Marshall Avenue, Longview, Gregg County, Texas, 75601, United States
SUITE 504
LONGVIEW, TX 756015659
Phone: (903) 315-2777
Fax: (903) 315-2771
Type: Location
705 E Marshall Ave Ste 5001
Longview, TX 756015524
Phone: (903) 315-4880
Type: Location
PO BOX 4207
LONGVIEW, TX 756064207
Phone: (903) 315-4119
Fax: (903) 315-4130
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 2 Open Payments records for all available years, with a total value of $35.
Total Amount is formed as General ($35) + Research ($0) + Ownership ($0) = $35.
Last reported payment date: 2024-08-29 • Largest payer in this snapshot: W. L. Gore & Associates, Inc. ($20).
Total Amount
$35
General + Research + Ownership
Payments
2
Total payment records
General Amount
$35
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-08-29
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| W. L. Gore & Associates, Inc. | $20 |
| Janssen Pharmaceuticals, Inc | $15 |
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: 2010-07-29
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 |
|---|---|---|---|---|
| I20100729000536 | I | Thoracic Surgery | 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 |
|---|---|---|---|---|
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 49 | 44 | $0 |
| 99205 | New patient office or other outpatient visit, 60-74 minutes | 45 | 45 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 28 | 27 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 18 | 18 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 11 | 11 | $0 |
Insurance plans in this area (ZIP 75601)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| THORACIC SURGERY | TX | 33518 | Combined multiple vein and artery heart artery bypasses | 20 | 20 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| General Surgery | AZ | |
| Internal Medicine | TX | |
| Nurse Practitioner | TX | |
| Nurse Practitioner | TX | |
| - | TX | |
| E N D O C R I N O L O G Y | TX | |
| Nurse Practitioner | IL | |
| - | NC | |
| Physician Assistant | LA | |
| Hospitalist, Gastroenterology | TX |
Reviews
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