RONALD MARC WITTELES (MD) – Advanced Heart Failure and Transplant Cardiology Physician, NPI 1285779389
Advanced Heart Failure and Transplant Cardiology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
21,511 INTERNAL MEDICINE in CA
Provider Addresses for RONALD MARC WITTELES (MD)
300 PASTEUR DR
STANFORD, CA 943052200
Phone: (650) 723-4000
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 59 Open Payments records for all available years, with a total value of $109,349.
Total Amount is formed as General ($95,149) + Research ($14,200) + Ownership ($0) = $109,349.
Last reported payment date: 2024-12-31 • Largest payer in this snapshot: PFIZER INC. ($52,924).
Total Amount
$109,349
General + Research + Ownership
Payments
59
Total payment records
General Amount
$95,149
General payments
Research Amount
$14,200
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-31
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| PFIZER INC. | $52,924 |
| Alnylam Pharmaceuticals Inc. | $22,969 |
| Novo Nordisk AS | $21,141 |
| AstraZeneca Pharmaceuticals LP | $6,572 |
| Alexion Pharmaceuticals, Inc. | $5,520 |
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: 2007-05-23
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 |
|---|---|---|---|---|
| I20070523000625 | I | Cardiovascular Disease (Cardiology) | 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 |
|---|---|---|---|---|
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 226 | 59 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 193 | 176 | $0 |
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | 168 | 121 | $0 |
| 99291 | Critical care, first 30-74 minutes | 119 | 38 | $0 |
| 93295 | Evaluation of single, dual, or multiple lead implantable defibrillator system, remote up to 90 days | 82 | 51 | $0 |
Insurance plans in this area (ZIP 94305)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| CARDIOVASCULAR DISEASE (CARDIOLOGY) | CA | 93280 | Evaluation, testing, and programming adjustment of permanent dual lead pacemaker system with physician analysis, review, and report | 15 | 12 |
| CARDIOVASCULAR DISEASE (CARDIOLOGY) | CA | 93284 | Evaluation, testing and programming adjustment of defibrillator with analysis, review and report | 20 | 18 |
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 | |
| Pain Management, Anesthesiology | CA | |
| A N E S T H E S I O L O G Y | CA | |
| Sleep Medicine | FL | |
| A N E S T H E S I O L O G Y | MA |
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