KARLA CASTRO-FRENZEL (M.D.) – Pediatric Anesthesiology Physician, NPI 1245228378
Pediatric Anesthesiology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
3,343 ANESTHESIOLOGY in FL
Provider Addresses for KARLA CASTRO-FRENZEL (M.D.)
13535 Nemours Pkwy
Nemours Childrens Hospital
Orlando, FL 328277402
Phone: (407) 650-7646
Fax: (407) 650-7089
Type: Location
191, Mill Street, Rockport, Knox County, Maine, 04856, United States
ROCKLAND, DE 197320191
Phone: (302) 651-6212
Fax: (302) 651-4945
Type: Mailing
Nemours Children's Hospital, 13535, Nemours Parkway, Medical City, Orlando, Orange County, Florida, 32827, United States
NEMOURS CHILDRENS HOSPITAL
ORLANDO, FL 328277402
Phone: (407) 650-7646
Fax: (407) 650-7089
Type: Location
52 UNDERWOOD ST
ORLANDO, FL 328061110
Phone: (321) 527-7424
Fax: (321) 843-2196
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: 2015-02-27
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
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 |
|---|---|---|---|---|
| I20051005000296 | I | Anesthesiology | NY | TBD |
| I20150227002076 | I | Anesthesiology | FL | 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.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 32827)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Internal Medicine | FL | |
| O B S T E T R I C S/ G Y N E C O L O G Y | NY | |
| Nurse Practitioner | FL | |
| Internal Medicine | FL | |
| Vascular Surgery, General Surgery | FL | |
| Physical Therapist In Private Practice | FL | |
| Sports Medicine | OH | |
| Nurse Practitioner | FL | |
| Internal Medicine | FL | |
| Internal Medicine | IA |
Reviews
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