ALFONSO DANIEL DE DIEGO
NPI 1457225989
Student in an Organized Health Care Education/Training Program in Atlanta, GA

Active since September 29, 2025Accepts Medicare Assignment
550 PEACHTREE ST NE, ATLANTA, GA 30308(404) 686-4411 Get Directions Write a Review

NPPES record last updated: September 29, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Alfonso Daniel De Diego NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ALFONSO DANIEL DE DIEGO (NPI 1457225989) is an individual student in an organized health care education/training program in Atlanta, Georgia and active in the NPI registry since September 2025. He is affiliated with Emory University Hospital Midtown and is a graduate of Emory University School Of Medicine (2025).

NPPES Registry Identity

NPI1457225989
Entity TypeIndividualMale
Primary Taxonomy390200000X
Provider Legal NameALFONSO DANIEL DE DIEGO
Location Address550 PEACHTREE ST NEAtlanta, GA 30308-2212
Mailing Address5903 Krantz DrFrederick, MD 21703-2959 · (240) 505-6831
Sole ProprietorNo
Medical School CMSEmory University School Of MedicineGraduated 2025
Enumeration DateSeptember 29, 2025
NPPES CertifiedSeptember 29, 2025
✔ NPI 1457225989 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Taxonomy Code390200000X
Definition
An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.
550 PEACHTREE ST NE, Atlanta, GA 30308

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

Alfonso Daniel De Diego 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.

PECOS PAC ID2567947203
PECOS Enrollment IDI20260331000702

Medicare Billing Reassignments

2

Medicare enrollment records show Alfonso De Diego reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Internal Medicine
1365 CLIFTON RD NE
Atlanta, GA 30322
  • Reassigned Medicare billing, Georgia enrollment
  • 4,840 clinicians in this Medicare group
Anesthesiology
303 SMITH ST
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.

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Emory University Hospital Midtown

Acute Care Hospitals · Atlanta, GA
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number110078
Location550 Peachtree Street, NEAtlanta, GA 30308 · Fulton County
Emergency services Birthing friendly

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.

Surgery
550 PEACHTREE ST NE
ATLANTA, GA 30308
Anesthesiologist Assistant
550 PEACHTREE ST NE
ATLANTA, GA 30308
Physician Assistant
550 PEACHTREE ST NE
ATLANTA, GA 30308
Occupational Therapist
550 PEACHTREE ST NE
ATLANTA, GA 30308
Otolaryngology
550 PEACHTREE ST NE
ATLANTA, GA 30308
Internal Medicine (Infectious Disease)
550 PEACHTREE ST NE
ATLANTA, GA 30308
Surgery
550 PEACHTREE ST NE
ATLANTA, GA 30308
Internal Medicine
550 PEACHTREE ST NE
ATLANTA, GA 30308

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 Alfonso De Diego's NPI number?

The NPI number for Alfonso De Diego is 1457225989. It was assigned to this individual provider in the NPPES registry on September 29, 2025.

Where is Alfonso De Diego located?

Alfonso De Diego practices at 550 Peachtree St NE, Atlanta, GA 30308. The listed phone number is (404) 686-4411.

What is Alfonso De Diego's specialty?

The primary specialty registered for this NPI is Student in an Organized Health Care Education/Training Program with taxonomy code 390200000X.

Is Alfonso De Diego enrolled in Medicare?

Yes. Alfonso De Diego 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 Alfonso De Diego's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Alfonso De Diego reassigns Medicare benefits to 2 organizations: 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 Alfonso De Diego's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Alfonso De Diego accept?

Health plans from Oscar Health list Alfonso De Diego 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 Alfonso De Diego affiliated with any hospitals?

According to CMS data, Alfonso De Diego is affiliated with Emory University Hospital Midtown.

When was this NPI record last updated?

The NPPES record for Alfonso De Diego was last updated on September 29, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.