DR. IZABELA WITCZAK (M.D) – Internal Medicine Physician, NPI 1184735201
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
21,511 INTERNAL MEDICINE in CA
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Provider Addresses for DR. IZABELA WITCZAK (M.D)
12395, El Camino Real, San Diego, San Diego County, California, 92130, United States
SUITE 100
SAN DIEGO, CA 921303082
Phone: (858) 259-5655
Fax: (858) 259-5638
Type: Mailing
150, Valpreda Road, San Marcos, San Diego County, California, 92096, United States
SAN MARCOS, CA 920692973
Phone: (760) 736-6700
Fax: (760) 736-8740
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 6 Open Payments records for all available years, with a total value of $117.
Total Amount is formed as General ($117) + Research ($0) + Ownership ($0) = $117.
Last reported payment date: 2024-11-20 • Largest payer in this snapshot: SCILEX PHARMACEUTICALS INC. ($24).
Total Amount
$117
General + Research + Ownership
Payments
6
Total payment records
General Amount
$117
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-11-20
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| SCILEX PHARMACEUTICALS INC. | $24 |
| Abbott Laboratories | $22 |
| NESTLE HEALTHCARE NUTRITION INC. | $20 |
| Dexcom, Inc. | $19 |
| Astellas Pharma US Inc | $17 |
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: 2004-11-29
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 |
|---|---|---|---|---|
| I20041129000602 | I | Internal Medicine | 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 |
|---|---|---|---|---|
| 36415 | Insertion of needle into vein for collection of blood sample | 44 | 35 | $0 |
| 83036 | Hemoglobin a1c level | 31 | 29 | $0 |
| 81002 | Urinalysis, manual test | 11 | 11 | $0 |
Insurance plans in this area (ZIP 92130)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| INTERNAL MEDICINE | CA | 83036 | Hemoglobin A1C level | 21 | 19 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Physician Assistant | CA | |
| Addiction Medicine, Psychiatry | CA | |
| Clinical Social Worker | NV | |
| Physician Assistant | CA | |
| Clinical Psychologist | CA | |
| Family Practice | CA | |
| Family Practice | CA | |
| Family Practice | CA | |
| Family Practice | CA | |
| Physician Assistant | CA |
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