DR. JEFFREY PAUL DAYTON M.D.
NPI 1124056056
Emergency Medicine in San Pedro, CA
About Dr. Jeffrey Paul Dayton M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JEFFREY PAUL DAYTON M.D. (NPI 1124056056) is an individual emergency medicine provider in San Pedro, California, licensed in California (A89485) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS and is a graduate of University Of Southern California Keck School Of Medicine (2002).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 4
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
Dr. Jeffrey Paul Dayton M.d. 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
4Medicare enrollment records show Jeffrey Dayton reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Pedro, CA 90732
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Stephen R Shea MD Inc
- 50 clinicians in this Medicare group
Los Angeles, CA 90059
- Reassigned Medicare billing, California enrollment
- 63 clinicians in this Medicare group
Los Angeles, CA 90059
- Reassigned Medicare billing, California enrollment
- 67 clinicians in this Medicare group
Los Angeles, CA 90095
- Reassigned Medicare billing, California enrollment
- 135 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 90732 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAN PEDRO, CA 90732
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 Jeffrey Dayton's NPI number?
The NPI number for Jeffrey Dayton is 1124056056. It was assigned to this individual provider in the NPPES registry on June 29, 2006.
Where is Jeffrey Dayton located?
Jeffrey Dayton practices at 1300 W 7th St, San Pedro, CA 90732. The listed phone number is (310) 514-5350.
What is Jeffrey Dayton's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Jeffrey Dayton enrolled in Medicare?
Yes. Jeffrey Dayton 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 Jeffrey Dayton's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Jeffrey Dayton reassigns Medicare benefits to 4 organizations: Stephen R Shea, M.D., Inc (San Pedro, CA), Capital Hospitalist Medical Group Inc (Los Angeles, CA), Vep Mlk Emergency Medical Group Inc (Los Angeles, CA) and Regents Of The Univ Of Ca Emer Med (Los Angeles, 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 Jeffrey Dayton'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 Jeffrey Dayton was last updated on June 25, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# Dr. Jeffrey Paul Dayton, M.D. · NPI 1124056056
Emergency Medicine physician in San Pedro, California. Individual provider, active in the CMS NPPES registry since June 29, 2006.
## Identity
- **NPI:** 1124056056 (Entity type: Individual)
- **Enumerated:** June 29, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** A89485 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1300 W 7TH ST, San Pedro, CA 90732-3505
- **Phone:** (310) 514-5350 · **Fax:** (310) 514-5421
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Stephen R Shea, M.D., Inc (NPI 1942239033, San Pedro, CA); Capital Hospitalist Medical Group Inc (NPI 1992178222, Los Angeles, CA); Vep Mlk Emergency Medical Group Inc (NPI 1841679289, Los Angeles, CA); Regents Of The Univ Of Ca Emer Med (NPI 1104889138, Los Angeles, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Southern California Keck School Of Medicine, class of 2002
## Record status
- **NPPES last updated:** June 25, 2008
- **Other identifiers:** Medicare PIN WA89485B (CA); Medicare UPIN I58125 (CA); Medicare PIN WA89485A (CA); and 1 more
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Source: [NPI Profile](https://npiprofile.com/npi/1124056056) · Data from the CMS NPPES public registry.