ISABELLA MARIA OLDENBURG (PA) – Physician Assistant, NPI 1154882835
Physician Assistant
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
10,564 PHYSICIAN ASSISTANT in CA
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Provider Addresses for ISABELLA MARIA OLDENBURG (PA)
Berkeley, Alameda County, California, United States
BERKELEY, CA 947072502
Phone: (708) 710-6342
Type: Mailing
44 W RIVER ST
PROVIDENCE, RI 029042609
Phone: (401) 274-4800
Type: Mailing
PO BOX 202230
DALLAS, TX 753202230
Phone: (401) 274-4800
Fax: (401) 454-0410
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 1 Open Payments records for all available years, with a total value of $41.
Total Amount is formed as General ($41) + Research ($0) + Ownership ($0) = $41.
Last reported payment date: 2024-12-19 • Largest payer in this snapshot: Madrigal Pharmaceuticals ($41).
Total Amount
$41
General + Research + Ownership
Payments
1
Total payment records
General Amount
$41
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-19
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Madrigal Pharmaceuticals | $41 |
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: 2022-10-12
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 |
|---|---|---|---|---|
| I20221012001512 | I | Physician Assistant | RI | 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 | 110 | 89 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 92 | 92 | $0 |
| 99203 | New patient office or other outpatient visit, 30-44 minutes | 22 | 22 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 11 | 11 | $0 |
Insurance plans in this area (ZIP 94707)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Gastroenterology, Internal Medicine | RI | |
| G A S T R O E N T E R O L O G Y | RI | |
| Nurse Practitioner | RI | |
| G A S T R O E N T E R O L O G Y | RI | |
| Certified Registered Nurse Anesthetist (Crna) | RI | |
| Certified Registered Nurse Anesthetist (Crna) | RI | |
| Certified Registered Nurse Anesthetist (Crna) | RI | |
| Physician Assistant | RI | |
| Nurse Practitioner | TX | |
| G A S T R O E N T E R O L O G Y | NH |
Reviews
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