DR. ROBERT ERROL PORTER DO
NPI 1275561565
Emergency Medicine in Phoenix, AZ
About Dr. Robert Errol Porter Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ROBERT ERROL PORTER DO (NPI 1275561565) is an individual emergency medicine provider in Phoenix, Arizona, licensed in Arizona (4400) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS and is a graduate of Arizona College Of Osteopathic Medicine Mid Western University (2003).
NPPES Registry Identity
Specialties & Licenses
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
Dr. Robert Errol Porter Do 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
3Medicare enrollment records show Robert Porter reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Phoenix, AZ 85006
- Reassigned Medicare billing, Arizona enrollment
- 199 clinicians in this Medicare group
Mesa, AZ 85202
- Reassigned Medicare billing, Arizona enrollment
- 174 clinicians in this Medicare group
Gilbert, AZ 85296
- Reassigned Medicare billing, Arizona enrollment
- 263 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 3
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 85006 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
PHOENIX, AZ 85006
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 Robert Porter's NPI number?
The NPI number for Robert Porter is 1275561565. It was assigned to this individual provider in the NPPES registry on June 28, 2006.
Where is Robert Porter located?
Robert Porter practices at 1111 E Mcdowell Rd, Phoenix, AZ 85006. The listed phone number is (602) 839-6968.
What is Robert Porter's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Robert Porter enrolled in Medicare?
Yes. Robert Porter 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 Robert Porter's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Robert Porter reassigns Medicare benefits to 3 organizations: Emergency Professional Services PC (Phoenix, AZ), Cep America - Arizona PC (Mesa, AZ) and Tec Emergency Physicians Of Arizona, LLC (Gilbert, AZ). 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 Robert Porter's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Robert Porter accept?
Health plans from Blue Cross Blue Shield of Arizona and Oscar Health Plan, Inc. list Robert Porter 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.
When was this NPI record last updated?
The NPPES record for Robert Porter was last updated on January 5, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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. Robert Errol Porter, DO · NPI 1275561565
Emergency Medicine physician in Phoenix, Arizona. Individual provider, active in the CMS NPPES registry since June 28, 2006.
## Identity
- **NPI:** 1275561565 (Entity type: Individual)
- **Enumerated:** June 28, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 4400 (Arizona)
- **Sole proprietor:** No
## Practice location
- **Address:** 1111 E MCDOWELL RD, Phoenix, AZ 85006-2612
- **Phone:** (602) 839-6968 · **Fax:** (602) 839-4144
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Emergency Professional Services PC (NPI 1518984210, Phoenix, AZ); Cep America - Arizona PC (NPI 1356021190, Mesa, AZ); Tec Emergency Physicians Of Arizona, LLC (NPI 1245772870, Gilbert, AZ) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Arizona College Of Osteopathic Medicine Mid Western University, class of 2003
## Record status
- **NPPES last updated:** January 5, 2015
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Source: [NPI Profile](https://npiprofile.com/npi/1275561565) · Data from the CMS NPPES public registry.