JACK O. STEWART (M.D.) – Pulmonary Disease Physician, NPI 1942278452
Pulmonary Disease Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,779 PULMONARY DISEASE in CA
Provider Addresses for JACK O. STEWART (M.D.)
750, West La Veta Avenue, Orange, Orange County, California, 92868, United States
ORANGE, CA 928684312
Phone: (714) 361-6600
Fax: (714) 919-8804
Type: Mailing
1310 W STEWART DR STE 408
ORANGE, CA 928683855
Phone: (714) 639-9401
Fax: (714) 919-8807
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 236 Open Payments records for all available years, with a total value of $6,017.
Total Amount is formed as General ($6,017) + Research ($0) + Ownership ($0) = $6,017.
Last reported payment date: 2024-12-17 • Largest payer in this snapshot: Boehringer Ingelheim Pharmaceuticals, Inc. ($1,015).
Total Amount
$6,017
General + Research + Ownership
Payments
236
Total payment records
General Amount
$6,017
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-17
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Boehringer Ingelheim Pharmaceuticals, Inc. | $1,015 |
| AstraZeneca Pharmaceuticals LP | $723 |
| GlaxoSmithKline, LLC. | $654 |
| Insmed, Inc. | $399 |
| GENZYME CORPORATION | $253 |
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: 2008-01-22
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 |
|---|---|---|---|---|
| I20080122000823 | I | Pulmonary Disease | CA | 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 |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 426 | 248 | $0 |
| 99231 | Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 402 | 72 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 309 | 223 | $0 |
| 94010 | Test to measure expiratory airflow and volume | 232 | 182 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 175 | 84 | $0 |
Insurance plans in this area (ZIP 92868)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | CA | |
| Internal Medicine | CA | |
| Physician Assistant | CA | |
| Physician Assistant | CA | |
| - | CA | |
| Internal Medicine | CA | |
| Physician Assistant | CA | |
| - | CA | |
| Internal Medicine, Geriatric Medicine | CA | |
| Nurse Practitioner | CA |
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