DR. ROBIN MARCELLUS DENNINGS (M.D.) – Anesthesiology Physician, NPI 1649265349
Anesthesiology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
6,371 ANESTHESIOLOGY in CA
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Provider Addresses for DR. ROBIN MARCELLUS DENNINGS (M.D.)
210, North Tustin Avenue, Santa Ana, Orange County, California, 92705, United States
SANTA ANA, CA 927053807
Phone: (714) 347-1010
Fax: (714) 647-1245
Type: Mailing
200, Porter Drive, San Ramon, Contra Costa County, California, 94583, United States
SUITE 100
SAN RAMON, CA 945831587
Phone: (925) 838-6880
Type: Location
PO BOX 25033
SANTA ANA, CA 927995033
Phone: (714) 347-1010
Fax: (714) 347-1082
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
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: 2005-04-12
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 |
|---|---|---|---|---|
| I20050412001135 | I | Anesthesiology | 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 |
|---|---|---|---|---|
| 00811 | Anesthesia for other procedure on large bowel using an endoscope | 32 | 32 | $0 |
| 00813 | Anesthesia for procedure on small and large bowel using an endoscope | 15 | 15 | $0 |
Insurance plans in this area (ZIP 92705)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | CA | |
| Certified Registered Nurse Anesthetist (Crna) | CA | |
| Certified Registered Nurse Anesthetist (Crna) | CA | |
| Certified Registered Nurse Anesthetist (Crna) | CA | |
| Certified Registered Nurse Anesthetist (Crna) | CA | |
| Certified Registered Nurse Anesthetist (Crna) | CA | |
| Certified Registered Nurse Anesthetist (Crna) | CA | |
| Certified Registered Nurse Anesthetist (Crna) | CA | |
| Certified Registered Nurse Anesthetist (Crna) | CA | |
| Certified Registered Nurse Anesthetist (Crna) | CA |
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