RUSSELL G DAY M.D.
NPI 1700170792
Internal Medicine - Critical Care Medicine in Birmingham, AL
About Russell G Day M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RUSSELL G DAY M.D. (NPI 1700170792) is an individual critical care medicine provider in Birmingham, Alabama, licensed in Alabama (42114) and active in the NPI registry since June 2011. He is enrolled in Medicare PECOS and maintains a secondary practice location in Las Vegas.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 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 (PECOS)
Russell G Day M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Russell Day reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Birmingham, AL 35233
- Reassigned Medicare billing, Alabama enrollment
- 4,494 clinicians in this Medicare group
Huntsville, AL 35801
- Reassigned Medicare billing, Alabama enrollment
- 23 clinicians in this Medicare group
Sparks, NV 89434
- Reassigned Medicare billing, Nevada enrollment
- 117 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
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 35249 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.
BIRMINGHAM, AL 35249
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 Russell Day's NPI number?
The NPI number for Russell Day is 1700170792. It was assigned to this individual provider in the NPPES registry on June 7, 2011.
Where is Russell Day located?
Russell Day practices at 619 19th St S, Birmingham, AL 35249. The listed phone number is (205) 934-4011.
What is Russell Day's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.
Is Russell Day enrolled in Medicare?
Yes. Russell Day is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Russell Day's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Russell Day reassigns Medicare benefits to 3 organizations: University Of Alabama Health Services Foundation, PC (Birmingham, AL), North Alabama Specialty Hospital (Huntsville, AL) and Sound Physicians Emergency Medicine Of Nevada Bessler PLLC (Sparks, NV). 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 Russell Day's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Russell Day accept?
Health plans from Oscar Health Maintenance Organization of Florida list Russell Day 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 Russell Day was last updated on October 20, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Russell G Day, M.D. · NPI 1700170792
Critical Care Medicine physician in Birmingham, Alabama. Individual provider, active in the CMS NPPES registry since June 7, 2011.
## Identity
- **NPI:** 1700170792 (Entity type: Individual)
- **Enumerated:** June 7, 2011
- **Primary specialty:** Internal Medicine - Critical Care Medicine · taxonomy 207RC0200X
- **State license:** 42114 (Alabama)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 619 19TH ST S, Birmingham, AL 35249-2329
- **Phone:** (205) 934-4011
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **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): University Of Alabama Health Services Foundation, PC (NPI 1124213376, Birmingham, AL); North Alabama Specialty Hospital (NPI 1942693973, Huntsville, AL); Sound Physicians Emergency Medicine Of Nevada Bessler PLLC (NPI 1881151231, Sparks, NV) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 20, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1700170792) · Data from the CMS NPPES public registry.