JOHNNY O ALEXANDER MD
NPI 1649439043
Radiology - Diagnostic Radiology in Chicago, IL
About Johnny O Alexander Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHNNY O ALEXANDER MD (NPI 1649439043) is an individual diagnostic radiology provider in Chicago, Illinois, licensed in New York (316970) and active in the NPI registry since June 2008. He is enrolled in Medicare PECOS, is affiliated with Hca Florida Fawcett Hospital, and maintains a secondary practice location in Washington.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 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
Johnny O Alexander 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
11Medicare enrollment records show Johnny Alexander reassigns Medicare billing to 11 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Detroit, MI 48236
- Reassigned Medicare billing, Georgia enrollment
- 4 clinicians in this Medicare group
Mount Airy, MD 21771
- Reassigned Medicare billing, Maryland enrollment
- 317 clinicians in this Medicare group
Germantown, MD 20876
- Reassigned Medicare billing, District of Columbia enrollment
- 234 clinicians in this Medicare group
Gaithersburg, MD 20878
- Reassigned Medicare billing, District of Columbia enrollment
- 340 clinicians in this Medicare group
Rockville, MD 20850
- Reassigned Medicare billing, District of Columbia enrollment
- 118 clinicians in this Medicare group
Atlanta, GA 30312
- Reassigned Medicare billing, Georgia enrollment
- 18 clinicians in this Medicare group
Washington, DC 20060
- Reassigned Medicare billing, District of Columbia enrollment
- 319 clinicians in this Medicare group
Jamaica, NY 11418
- Reassigned Medicare billing, New York enrollment
- Medicare enrollment name: Tjh Medical Services PC
- 497 clinicians in this Medicare group
Jamaica, NY 11418
- Reassigned Medicare billing, New York enrollment
- 738 clinicians in this Medicare group
Donalsonville, GA 39845
- Reassigned Medicare billing, Georgia enrollment
- 101 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 44
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 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Hca Florida Fawcett Hospital
Acute Care Hospitals · Port Charlotte, FLHca Florida Gulf Coast Hospital
Acute Care Hospitals · Panama City, FLHoly Cross Hospital
Acute Care Hospitals · Silver Spring, MDSinai Hospital Of Baltimore
Acute Care Hospitals · Baltimore, MDAdventist Healthcare Shady Grove Medical Center
Acute Care Hospitals · Rockville, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60653 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.
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 Johnny Alexander's NPI number?
The NPI number for Johnny Alexander is 1649439043. It was assigned to this individual provider in the NPPES registry on June 2, 2008.
Where is Johnny Alexander located?
Johnny Alexander practices at 3753 S Cottage Grove Ave Ste 101, Chicago, IL 60653. The listed phone number is (708) 216-9000.
What is Johnny Alexander's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.
Is Johnny Alexander enrolled in Medicare?
Yes. Johnny Alexander 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 Johnny Alexander's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Johnny Alexander reassigns Medicare benefits to 11 organizations: Eastpointe Radiologists, P.C. (Detroit, MI), Lifebridge Community Physicians Inc (Mount Airy, MD), Professional Services Of Holy Cross (Germantown, MD), Adventist Physician Services, Inc. (Gaithersburg, MD), Blackwell Physicians, LLC (Rockville, MD) and 6 more organizations, listed in the Medicare section above. 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 Johnny Alexander's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Johnny Alexander accept?
Health plans from CareSource and Oscar Health Maintenance Organization of Florida list Johnny Alexander 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 Johnny Alexander affiliated with any hospitals?
According to CMS data, Johnny Alexander is affiliated with Hca Florida Fawcett Hospital, Hca Florida Gulf Coast Hospital, Holy Cross Hospital, Sinai Hospital Of Baltimore and Adventist Healthcare Shady Grove Medical Center.
When was this NPI record last updated?
The NPPES record for Johnny Alexander was last updated on July 28, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.