Active NPI
Johnny O Alexander, MD
- Diagnostic Radiology Physician
- Chicago, IL
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Diagnostic Radiology Physician
- License
- 316970
- Practice address
- 3753 S Cottage Grove Ave Ste 101
Chicago, IL 60653-1662 - Phone
- (708) 216-9000
- NPI assigned
- Jun 2, 2008
- Sex
- Male
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 4
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Diagnostic Radiology Physician | 2085R0202X | MD210012291 | DC | |
| Diagnostic Radiology Physician | 2085R0202X | 0101243293 | VA | |
| Diagnostic Radiology Physician | 2085R0202X | 36128037 | IL | |
| Diagnostic Radiology Physician | 2085R0202X | 316970 | NY | Primary |
Addresses
Primary practice location
3753 S Cottage Grove Ave Ste 101
Chicago, IL 60653-1662
Mailing address
Uva Health Services Foundation
P.O. Box 9007
Charlottesville, VA 22908-0001
Phone (434) 295-1000
Other practice location 1
2041 Georgia Ave NW # 1R84
Washington, DC 20060-1662
Phone (202) 865-3610
Other identifiers 1
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 1649439043 | Medicaid | VA |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in GA, FL, NY, MD, DC
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 5
| Enrollment ID | State | Provider type | PAC ID | Details |
|---|---|---|---|---|
| I20090707000239 | GA | Practitioner - Diagnostic Radiology | 9234201906 | Reassigns benefits to 4 organizations |
| I20150305000748 | FL | Practitioner - Diagnostic Radiology | 9234201906 | Reassigns benefits to 1 organization |
| I20221114001296 | NY | Practitioner - Diagnostic Radiology | 9234201906 | Reassigns benefits to 2 organizations |
| I20230118000770 | MD | Practitioner - Diagnostic Radiology | 9234201906 | Reassigns benefits to 1 organization |
| I20230803002631 | DC | Practitioner - Diagnostic Radiology | 9234201906 | Reassigns benefits to 4 organizations |
Care Compare profile
Medicare Care Compare- Specialty
- Diagnostic Radiology
- Education
- Saint Louis University School of Medicine, 2002
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
- Professional Services of Holy CrossMori Bean and Brooks IncHoward UniversityLifebridge Community Physicians IncEastpointe Radiologists PCJamaica HospitalBlackwell Physicians, LLC
Practice addresses (Care Compare)
1500 Forest Glen Rd
Silver Spring, MD 20910-1460
Phone (301) 754-7000
1900 Tebeau St
Waycross, GA 31501-6357
Phone (904) 399-5550
2001 Kingsley Ave
Orange Park, FL 32073-5148
Phone (904) 399-5550
2041 Georgia NW Ave
Washington, DC 20060-0001
Phone (202) 865-6679
2401 W Belvedere Ave
LBH Medical Group Teleradiology
Baltimore, MD 21215-5216
Phone (410) 601-9000
765 Cooper Sandy CV
Alpharetta, GA 30004-0803
Phone (586) 464-0731
8900 Van Wyck Expy
Jamaica, NY 11418-2832
Phone (718) 206-6601
9901 Medical Ctr Dr
Rockville, MD 20850-3357
Phone (240) 826-6074
Hospital & facility affiliations
- Sinai Hospital of Baltimore
- Holy Cross Hospital
- HCA Florida Fawcett Hospital
- HCA Florida Highlands Hospital
- HCA Florida Gulf Coast Hospital
Merit-based Incentive Payment System (MIPS)
- Final score
- 92.19 of 100
- Quality
- 82.16
- Promoting interoperability
- 79
- Improvement activities
- 40
- Cost
- 75.98
Merit-based Incentive Payment System (MIPS)
- Final score
- 83.23 of 100
- Quality
- 60.26
- Promoting interoperability
- 100
- Improvement activities
- 40
- Cost
- 76.75
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| MD210012291 | DC | MD | Diagnostic Radiology Physician |
| 36128037 | IL | MD | Diagnostic Radiology Physician |
| 0101243293 | VA | MD | Diagnostic Radiology Physician |
Practice roles (25 of 31)
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Diagnostic Imaging Specialists PA | Diagnostic Radiology | Current | Accepting new patients |
| Professional Services of Holy Cross | Current | Accepting new patients | |
| Lifebridge Community Physicians Inc | Current | Accepting new patients | |
| Lima Memorial Professional Corporation | Current | Accepting new patients | |
| Jamaica Hospital | Current | Accepting new patients | |
| TJH Medical Services, P.C. | Family Medicine | Current | Accepting new patients |
| Sheridan Radiology Services of Central Florida Inc | Diagnostic Radiology | Current | Accepting new patients |
| Blackwell Physicians, LLC | Diagnostic Radiology | Current | Accepting new patients |
| Adventist Physician Services, Inc. | Current | Accepting new patients | |
| Lifebridge Community Physicians, Inc | Family Medicine | Current | Accepting new patients |
| Howard University | Family Medicine | Current | Accepting new patients |
| Eastpointe Radiologists, P.C. | Diagnostic Radiology | Current | Accepting new patients |
| Donalsonville Hospital Inc | Current | Accepting new patients | |
| Lifebridge Community Physicians, Inc | Current | Accepting new patients | |
| Professional Services of Holy Cross | Current | Accepting new patients | |
| Mori Bean and Brooks Inc | Diagnostic Radiology | Current | Accepting new patients |
| Jamaica Hospital | Current | Accepting new patients | |
| Sheridan Radiology Services of West Florida, Inc. | Diagnostic Radiology | Past | Accepting new patients |
| Diagnostic Systems Inc | Diagnostic Radiology | Past | Accepting new patients |
| Lima Memorial Joint Operating Company | Past | Accepting new patients | |
| Howard University Faculty Practice Plan | Past | Accepting new patients | |
| University of Virginia Physicians Group | Past | Accepting new patients | |
| Ici 24 7 PC | Diagnostic Radiology | Past | Accepting new patients |
| Eastpointe Radiologists, PC | Diagnostic Radiology | Past | Accepting new patients |
| Synergy Radiology, LLC | Past | Accepting new patients |
Locations (25 of 38)
2041 Georgia Ave NW
#1R84
Washington, DC 20060
Phone (202) 865-3610
2041 Georgia Ave NW
Washington, DC 20060
Phone (202) 865-3785
502 W Highland Blvd
Inverness, FL 34452
Phone (352) 344-6481
2001 Kingsley Ave
Orange Park, FL 32073
Phone (904) 215-7015
1401 W Seminole Blvd
Sanford, FL 32771
Phone (317) 805-2316
13695 US Highway 1
Sebastian, FL 32958
Phone (772) 589-3185
2115 Little Rd
Trinity, FL 34655
Phone 7278418225410
285 Boulevard NE
Ste 215
Atlanta, GA 30312
Phone (404) 524-5082
303 Parkway Dr NE
Atlanta, GA 30312
Phone (404) 265-4000
102 Hospital Cir
Donalsonville, GA 39845
Phone (229) 524-8489
1900 Tebeau St
Waycross, GA 31501
Phone (912) 283-3030
2401 W Belvedere Ave
Baltimore, MD 21215
820 W Diamond Ave
Ste 500
Gaithersburg, MD 20878
19801 Observation Dr
Germantown, MD 20876
Phone (301) 557-5928
19731 Germantown Rd
Ste 102
Germantown, MD 20874
Phone (301) 444-8700
9901 Medical Center Dr
Rockville, MD 20850
Phone (301) 279-6000
9601 Blackwell Rd
Ste 150
Rockville, MD 20850
Phone (240) 864-1100
2101 Medical Park Dr
Ste 305
Silver Spring, MD 20902
Phone (301) 754-0833
1500 Forest Glen Rd
Silver Spring, MD 20910
Phone (301) 754-7230
410 Malcolm Dr
Ste A
Westminster, MD 21157
Phone (410) 876-1633
36750 26 Mile Rd
Chesterfield, MI 48047
Phone (586) 879-2000
51307 Gratiot Ave
Chesterfield, MI 48051
Phone (586) 741-3772
43900 Garfield Rd
Ste 222
Clinton Twp, MI 48038
Phone (586) 263-1234
22101 Moross Rd
Detroit, MI 48236
Phone (313) 343-3248
17141 Kercheval Ave
Grosse Pointe, MI 48230
Phone (313) 642-4980
Networks
- Healthfirst Medicare Network H5989
- Optimum HealthCare HMO Network
- Healthfirst Medicare Network H3359
- Healthfirst Medicare Network H1722
- Healthfirst Medicare Network H9678
- Freedom Health HMO Network
Interoperability endpoints
- jalexander1159440@direct.hfhs.org
- jalexander427716@direct.llu.edu
Organizations & group practices 29
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.
-
- Diagnostic Radiology Physician
- Rockville, MD
- NPI 1932772589
DC, Diagnostic Radiology
-
- Diagnostic Radiology Physician
- Detroit, MI
- NPI 1881642056
Diagnostic Radiology, GA
-
- Emergency Medical Services (Emergency Medicine) Physician
- Jamaica, NY
- NPI 1477505220
NY
-
- Cardiovascular Disease Physician
- Timonium, MD
- NPI 1174815807
MD
-
- Diagnostic Radiology Physician
- Tampa, FL
- NPI 1093782070
Diagnostic Radiology, FL, GA
-
- Health Service Clinic/Center
- Silver Spring, MD
- NPI 1487692828
DC
-
- Physical Medicine & Rehabilitation Physician
- Gaithersburg, MD
- NPI 1376623207
DC
-
- Diagnostic Radiology Physician
- Atlanta, GA
- NPI 1366424947
Diagnostic Radiology, GA
-
- Internal Medicine Physician
- Jamaica, NY
- NPI 1184670465
Family Medicine, NY
-
- Skilled Nursing Facility
- Jamaica, NY
- NPI 1750516795
Hospital & facility affiliations 7
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- General Acute Care Hospital
- Port Charlotte, FL
- NPI 1417901406
Hospital
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1212364800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1753660800000",
"number": "1649439043",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "UVA HEALTH SERVICES FOUNDATION",
"address_2": "P.O. BOX 9007",
"city": "CHARLOTTESVILLE",
"state": "VA",
"postal_code": "229080001",
"telephone_number": "434-295-1000",
"fax_number": "434-972-4266"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "3753 S COTTAGE GROVE AVE STE 101",
"city": "CHICAGO",
"state": "IL",
"postal_code": "606531662",
"telephone_number": "708-216-9000"
}
],
"practiceLocations": [
{
"address_1": "2041 Georgia Ave NW # 1R84",
"address_purpose": "LOCATION",
"city": "Washington",
"state": "DC",
"postal_code": "200601662",
"country_code": "US",
"telephone_number": "202-865-3610",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "ALEXANDER",
"first_name": "JOHNNY",
"middle_name": "O",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2008-06-02",
"last_updated": "2025-07-28",
"certification_date": "2025-07-28",
"status": "A"
},
"taxonomies": [
{
"code": "2085R0202X",
"taxonomy_group": "",
"desc": "Radiology, Diagnostic Radiology",
"state": "DC",
"license": "MD210012291",
"primary": false
},
{
"code": "2085R0202X",
"taxonomy_group": "",
"desc": "Radiology, Diagnostic Radiology",
"state": "VA",
"license": "0101243293",
"primary": false
},
{
"code": "2085R0202X",
"taxonomy_group": "",
"desc": "Radiology, Diagnostic Radiology",
"state": "IL",
"license": "36128037",
"primary": false
},
{
"code": "2085R0202X",
"taxonomy_group": "",
"desc": "Radiology, Diagnostic Radiology",
"state": "NY",
"license": "316970",
"primary": true
}
],
"identifiers": [
{
"code": "05",
"desc": "MEDICAID",
"issuer": null,
"identifier": "1649439043",
"state": "VA"
}
],
"endpoints": [],
"other_names": []
}
Other providers in Chicago, IL
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 28, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.