JOHN DIEHL MD
NPI 1962905737
Emergency Medicine in Atlanta, GA
About John Diehl Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN DIEHL MD (NPI 1962905737) is an individual emergency medicine provider in Atlanta, Georgia, licensed in Georgia (87926) and active in the NPI registry since March 2018. He is enrolled in Medicare PECOS, is affiliated with Emory University Hospital, and is a graduate of Emory University School Of Medicine (2018).
NPPES Registry Identity
Specialties & Licenses 2
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
John Diehl 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
3Medicare enrollment records show John Diehl reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Atlanta, GA 30303
- Reassigned Medicare billing, Georgia enrollment
- 2,681 clinicians in this Medicare group
Atlanta, GA 30322
- Reassigned Medicare billing, Georgia enrollment
- 4,840 clinicians in this Medicare group
Lagrange, GA 30240
- Reassigned Medicare billing, Georgia enrollment
- 1,506 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 4
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.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Emory University Hospital
Acute Care Hospitals · Atlanta, GAEmory University Hospital Midtown
Acute Care Hospitals · Atlanta, GAGrady Memorial Hospital
Acute Care Hospitals · Atlanta, GAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 30303 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.
ATLANTA, GA 30303
ATLANTA, GA 30303
ATLANTA, GA 30303
ATLANTA, GA 30303
ATLANTA, GA 30303
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 Diehl's NPI number?
The NPI number for John Diehl is 1962905737. It was assigned to this individual provider in the NPPES registry on March 17, 2018.
Where is John Diehl located?
John Diehl practices at 49 Jesse Hill Jr Dr SE, Atlanta, GA 30303. The listed phone number is (404) 778-7777.
What is John Diehl's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is John Diehl enrolled in Medicare?
Yes. John Diehl 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 Diehl's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Diehl reassigns Medicare benefits to 3 organizations: Emory Medical Care Foundation Inc (Atlanta, GA), The Emory Clinic Inc (Atlanta, GA) and Emory Specialty Associates, LLC (Lagrange, GA). 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 Diehl's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Diehl accept?
Health plans from Oscar Health list John Diehl 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.
Is John Diehl affiliated with any hospitals?
According to CMS data, John Diehl is affiliated with Emory University Hospital, Emory University Hospital Midtown and Grady Memorial Hospital.
When was this NPI record last updated?
The NPPES record for John Diehl was last updated on April 13, 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.
# John Diehl, MD · NPI 1962905737
Emergency Medicine physician in Atlanta, Georgia. Individual provider, active in the CMS NPPES registry since March 17, 2018.
## Identity
- **NPI:** 1962905737 (Entity type: Individual)
- **Enumerated:** March 17, 2018
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 87926 (Georgia)
- **Sole proprietor:** No
## Practice location
- **Address:** 49 JESSE HILL JR DR SE, Atlanta, GA 30303-3049
- **Phone:** (404) 778-7777
## 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): Emory Medical Care Foundation Inc (NPI 1063678563, Atlanta, GA); The Emory Clinic Inc (NPI 1396798229, Atlanta, GA); Emory Specialty Associates, LLC (NPI 1407864168, Lagrange, GA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Emory University School Of Medicine, class of 2018
## Record status
- **NPPES last updated:** April 13, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1962905737) · Data from the CMS NPPES public registry.