GREGORY SAMPSON POWELL MD
NPI 1669834610
Emergency Medicine in Orange, CA
About Gregory Sampson Powell Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GREGORY SAMPSON POWELL MD (NPI 1669834610) is an individual emergency medicine provider in Orange, California, licensed in California (A151368) and active in the NPI registry since March 2016. He is enrolled in Medicare PECOS, maintains a secondary practice location in Torrance, and is a graduate of University Of Michigan Medical School (2016).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
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
Gregory Sampson Powell Md 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
2Medicare enrollment records show Gregory Powell reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Orange, CA 92868
- Reassigned Medicare billing, California enrollment
- 97 clinicians in this Medicare group
Whittier, CA 90602
- Reassigned Medicare billing, California enrollment
- 121 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.
Areas of Expertise CMS Part B claims 5
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92868 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 7
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
ORANGE, CA 92868
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 Gregory Powell's NPI number?
The NPI number for Gregory Powell is 1669834610. It was assigned to this individual provider in the NPPES registry on March 28, 2016.
Where is Gregory Powell located?
Gregory Powell practices at 1310 W Stewart Dr Ste 212, Orange, CA 92868. The listed phone number is (714) 543-8911.
What is Gregory Powell's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Gregory Powell enrolled in Medicare?
Yes. Gregory Powell 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 Gregory Powell's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Powell reassigns Medicare benefits to 2 organizations: Emergency Medicine Specialists Of Orange County (Orange, CA) and Intercommunity Emergency Medical Group (Whittier, CA). 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 Gregory Powell's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Gregory Powell was last updated on October 2, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years 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.
# Gregory Sampson Powell, MD · NPI 1669834610
Emergency Medicine physician in Orange, California. Individual provider, active in the CMS NPPES registry since March 28, 2016.
## Identity
- **NPI:** 1669834610 (Entity type: Individual)
- **Enumerated:** March 28, 2016
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** A151368 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1310 W STEWART DR STE 212, Orange, CA 92868-3837
- **Phone:** (714) 543-8911
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Emergency Medicine Specialists Of Orange County (NPI 1740214733, Orange, CA); Intercommunity Emergency Medical Group (NPI 1871535286, Whittier, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Michigan Medical School, class of 2016
## Record status
- **NPPES last updated:** October 2, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1669834610) · Data from the CMS NPPES public registry.