DR. JOHN DERZIS DO
NPI 1366138729
Internal Medicine in Birmingham, AL
About Dr. John Derzis Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN DERZIS DO (NPI 1366138729) is an individual internal medicine provider in Birmingham, Alabama, licensed in Alabama (1366138729) and active in the NPI registry since April 2023. He is enrolled in Medicare PECOS, maintains a secondary practice location in Birmingham, and is a graduate of Edward Via Col Of Osteo Medicine-virginia Campus (2023).
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 and accepts Medicare assignment
Dr. John Derzis 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
2Medicare enrollment records show John Derzis reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Vestavia Hills, AL 35243
- Reassigned Medicare billing, Alabama enrollment
- 215 clinicians in this Medicare group
Lincoln, AL 35096
- Reassigned Medicare billing, Alabama enrollment
- 430 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 35211 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 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BIRMINGHAM, AL 35211
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 John Derzis's NPI number?
The NPI number for John Derzis is 1366138729. It was assigned to this individual provider in the NPPES registry on April 17, 2023.
Where is John Derzis located?
John Derzis practices at 817 Princeton Ave SW Ste 210, Birmingham, AL 35211. The listed phone number is (205) 592-1406.
What is John Derzis's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is John Derzis enrolled in Medicare?
Yes. John Derzis 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 John Derzis's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Derzis reassigns Medicare benefits to 2 organizations: Oak Mountain Group Services, LLC (Vestavia Hills, AL) and Baptist Health Centers, LLC (Lincoln, AL). 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 John Derzis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Derzis accept?
Health plans from Blue Cross and Blue Shield of Alabama list John Derzis 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 John Derzis was last updated on August 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Dr. John Derzis, DO · NPI 1366138729
Internal Medicine physician in Birmingham, Alabama. Individual provider, active in the CMS NPPES registry since April 17, 2023.
## Identity
- **NPI:** 1366138729 (Entity type: Individual)
- **Enumerated:** April 17, 2023
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 1366138729 (Alabama)
- **Sole proprietor:** No
## Practice location
- **Address:** 817 PRINCETON AVE SW STE 210, Birmingham, AL 35211-1348
- **Phone:** (205) 592-1406 · **Fax:** (205) 592-1705
## 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): Oak Mountain Group Services, LLC (NPI 1609321165, Vestavia Hills, AL); Baptist Health Centers, LLC (NPI 1770547804, Lincoln, AL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Edward Via Col Of Osteo Medicine-Virginia Campus, class of 2023
## Record status
- **NPPES last updated:** August 7, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1366138729) · Data from the CMS NPPES public registry.