HELEN MARGARET BRONTE-STEWART (MD) – Clinical Neurophysiology Physician, NPI 1295786804
Clinical Neurophysiology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
87 NEUROPSYCHIATRY in CA
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Provider Addresses for HELEN MARGARET BRONTE-STEWART (MD)
Stanford Hospital, 300, Pasteur Drive, Stanford, Palo Alto, Santa Clara County, California, 94305, United States
STANFORD, CA 943052200
Phone: (650) 723-4000
Type: Location
1804 Embarcadero Road, Embarcadero Road, Palo Alto, Santa Clara County, California, 94303-3221, United States
STE 100
PALO ALTO, CA 943033341
Phone: (650) 723-4000
Type: Mailing
300 PASTEUR DR
STANFORD, CA 943052200
Phone: (650) 723-4000
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 $1,559.
Total Amount is formed as General ($1,559) + Research ($0) + Ownership ($0) = $1,559.
Last reported payment date: 2024-01-03 • Largest payer in this snapshot: Genentech USA, Inc. ($1,420).
Total Amount
$1,559
General + Research + Ownership
Payments
2
Total payment records
General Amount
$1,559
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-01-03
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Genentech USA, Inc. | $1,420 |
| Medtronic, Inc. | $139 |
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: 2008-07-24
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 |
|---|---|---|---|---|
| I20080724000506 | I | Neuropsychiatry | 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 |
|---|---|---|---|---|
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | 77 | 40 | $0 |
| 95983 | Electronic analysis of implanted brain, spinal cord, or peripheral neurostimulator generator with brain stimulator programming, first 15 minutes with qualified health professional | 29 | 18 | $0 |
| 96004 | Physician review of gait analysis test | 18 | 17 | $0 |
Insurance plans in this area (ZIP 94305)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| O B S T E T R I C S/ G Y N E C O L O G Y | TX | |
| - | CA | |
| - | CA | |
| - | CA | |
| O B S T E T R I C S/ G Y N E C O L O G Y | CA | |
| Plastic And Reconstructive Surgery | CA | |
| Hematology, Medical Oncology | NY | |
| Certified Registered Nurse Anesthetist (Crna) | TX | |
| Nurse Practitioner | CA | |
| Nurse Practitioner | CA |
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