Jack Stewart, M.D.
NPI 1942278452 · Pulmonary Disease Physician · Orange, CA
Enrolled with Medicare as Practitioner - Pulmonary Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jack Stewart, M.D. is a Pulmonary Disease Physician provider in Orange, CA (NPI 1942278452).
Provider details
- NPI number
- 1942278452
- Entity type
- Individual
- Primary specialty
- Pulmonary Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G48397 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,073 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 612 | $138 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 511 | $51 |
| Test to Measure Expiratory Airflow and Volume94010 | 231 | $26 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 226 | $81 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 176 | $98 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 48 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Fluticasone/Umeclidin/Vilanterbrand: Trelegy Ellipta | 624 | 152 |
| Prednisone | 477 | 239 |
| Montelukast Sodium | 344 | 118 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 266 | 92 |
| Fluticasone/Vilanterolbrand: Breo Ellipta | 142 | 31 |
| Levofloxacin | 122 | 70 |
| Azithromycin |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,011 across 115 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-03-09
- Last updated
- 2022-07-21
Frequently asked questions
- What is Jack Stewart's NPI number?
- Jack Stewart's National Provider Identifier (NPI) is 1942278452, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jack Stewart's specialty?
- Jack Stewart is listed in the NPPES registry with a primary specialty of Pulmonary Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Jack Stewart located?
- Jack Stewart's practice location on file with NPPES is 1310 W Stewart Dr Ste 408, Orange, CA 92868-3855.
- What is Jack Stewart's phone number?
- The practice phone number listed in the NPPES registry for Jack Stewart is (714) 639-9401.
- Does Jack Stewart accept Medicare?
- Jack Stewart is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jack Stewart's NPI active?
- Yes — Jack Stewart's NPI (1942278452) is active in the NPPES registry as of the last update on 2022-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.