SASHA ALEXANDRA UNDERWOOD
NPI 1285194068
Anesthesiology in Miami, FL
About Sasha Alexandra Underwood NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SASHA ALEXANDRA UNDERWOOD (NPI 1285194068) is an individual anesthesiology provider in Miami, Florida, licensed in Florida (ME165997) and active in the NPI registry since March 2019. She is enrolled in Medicare PECOS, is affiliated with Jackson Health System, and maintains a secondary practice location in Portland.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Secondary Practice Location 1
Other Identifiers 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Sasha Alexandra Underwood is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
5Medicare enrollment records show Sasha Underwood reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Miami, FL 33136
- Reassigned Medicare billing, Florida enrollment
- 3,639 clinicians in this Medicare group
Ronceverte, WV 24970
- Reassigned Medicare billing, West Virginia enrollment
- 1,511 clinicians in this Medicare group
San Diego, CA 92103
- Reassigned Medicare billing, California enrollment
- 251 clinicians in this Medicare group
Klamath Falls, OR 97603
- Reassigned Medicare billing, Oregon enrollment
- 2,212 clinicians in this Medicare group
Portland, OR 97239
- Reassigned Medicare billing, Oregon enrollment
- 279 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Jackson Health System
Acute Care Hospitals · Miami, FLOhsu Hospital And Clinics
Acute Care Hospitals · Portland, OROther Providers at the Same Location NPPES 16
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MIAMI, FL 33136
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Sasha Underwood's NPI number?
The NPI number for Sasha Underwood is 1285194068. It was assigned to this individual provider in the NPPES registry on March 20, 2019. The provider is also known as Stuart James Huizenga Van Der Greeff.
Where is Sasha Underwood located?
Sasha Underwood practices at 1611 NW 12th Ave # C300, Miami, FL 33136. The listed phone number is (303) 585-1111.
What is Sasha Underwood's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Sasha Underwood enrolled in Medicare?
Yes. Sasha Underwood is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Sasha Underwood's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sasha Underwood reassigns Medicare benefits to 5 organizations: University Of Miami (Miami, FL), Charleston Area Medical Center, Inc. (Ronceverte, WV), Regents Of The University Of California (San Diego, CA), University Professional Services (Klamath Falls, OR) and University Anesthesiology Associates, LLC (Portland, OR). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Sasha Underwood's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Sasha Underwood accept?
Health plans from CareSource list Sasha Underwood as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Sasha Underwood affiliated with any hospitals?
According to CMS data, Sasha Underwood is affiliated with Jackson Health System and Ohsu Hospital And Clinics.
When was this NPI record last updated?
The NPPES record for Sasha Underwood was last updated on April 1, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Sasha Alexandra Underwood · NPI 1285194068
Anesthesiology physician in Miami, Florida. Individual provider, active in the CMS NPPES registry since March 20, 2019.
## Identity
- **NPI:** 1285194068 (Entity type: Individual)
- **Enumerated:** March 20, 2019
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** ME165997 (Florida)
- **Sole proprietor:** No
## Practice location
- **Address:** 1611 NW 12TH AVE # C300, Miami, FL 33136-1005
- **Phone:** (303) 585-1111
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 5 organizations under Medicare reassignment (form CMS-855R): University Of Miami (NPI 1013967827, Miami, FL); Charleston Area Medical Center, Inc. (NPI 1972125995, Ronceverte, WV); Regents Of The University Of California (NPI 1356444897, San Diego, CA); University Professional Services (NPI 1659605707, Klamath Falls, OR); University Anesthesiology Associates, LLC (NPI 1841217817, Portland, OR) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2014
## Record status
- **NPPES last updated:** April 1, 2026
- **Other identifiers:** Other TRN29121 (FL)
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Source: [NPI Profile](https://npiprofile.com/npi/1285194068) · Data from the CMS NPPES public registry.