JOHN ONYEMAECHI NNADI MD
NPI 1558506782
Internal Medicine - Infectious Disease in Baton Rouge, LA

Active since December 02, 2008PECOS EnrolledAccepts Medicare Assignment
17000 MEDICAL CENTER DR, BATON ROUGE, LA 70816(225) 752-2470 Get Directions Write a Review

NPPES record last updated: November 17, 2022. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Nov 17, 2022, Oct 8, 2018 (2 updates tracked since 2018).

About John Onyemaechi Nnadi Md NPPES

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

JOHN ONYEMAECHI NNADI MD (NPI 1558506782) is an individual infectious disease provider in Baton Rouge, Louisiana, licensed in Louisiana (MD.202997) and active in the NPI registry since December 2008. He is enrolled in Medicare PECOS, is affiliated with Baton Rouge General Medical Center, and is a graduate of Other (1999).

NPPES Registry Identity

NPI1558506782
Entity TypeIndividualMale
Primary Taxonomy207RI0200X
Provider Legal NameJOHN ONYEMAECHI NNADICredential: MD
Location Address17000 MEDICAL CENTER DRBaton Rouge, LA 70816-3246
Mailing Address2925 Tradition AveBaton Rouge, LA 70810-0336 · (214) 909-9071
Sole ProprietorNo
Medical School CMSOtherGraduated 1999
Enumeration DateDecember 2, 2008
Last NPPES UpdateNovember 17, 20222 updates tracked since enumeration
NPPES CertifiedNovember 17, 2022
NPI 1558506782 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RI0200X
Licenses Licensed in LA · MD.202997 Licensed in MS · 20962 Licensed in DE · C1-0025159
Definition
An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.
Also ListedInternal MedicineTaxonomy 207R00000X · License 20962 (MS), MD.202997 (LA)
17000 MEDICAL CENTER DR, Baton Rouge, LA 70816

Other Identifiers 2

Medicaid1883115LA
Other05202301MS · Medicaid

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

John Onyemaechi Nnadi 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.

PECOS PAC ID8921138546
PECOS Enrollment IDI20100608000868, I20230118000024, I20250224003119
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 9

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
700 services269 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
165 services111 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
149 services65 patients
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231
Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.
124 services78 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
110 services56 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
59 services52 patients

Hospital Affiliations CMS Care Compare 4

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

Baton Rouge General Medical Center

Acute Care Hospitals · Baton Rouge, LA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number190065
Location8585 Picardy AveBaton Rouge, LA 70809 · E. Baton Rouge County
Emergency services Birthing friendly

Ochsner Medical Center - Baton Rouge

Acute Care Hospitals · Baton Rouge, LA
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number190202
Location17000 Medical Center DrBaton Rouge, LA 70816 · E. Baton Rouge County
Emergency services Birthing friendly

Trios Health

Acute Care Hospitals · Kennewick, WA
1/5 CMS rating
OwnershipGovernment - Hospital District or Authority
CMS Certification Number500053
Location900 South Auburn StreetKennewick, WA 99336 · Benton County
Emergency services Birthing friendly

Lourdes Medical Center

Critical Access Hospitals · Pasco, WA
4/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number501337
Location520 N Fourth AvenuePasco, WA 99301 · Franklin County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 70816 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$124.60 typical visit price
range $53.43 – $164.73
Typical copayment $31.15 (range $13.35 – $41.18)
Most-billed visit code 99204
Established Patient
$95.09 typical visit price
range $16.64 – $133.62
Typical copayment $23.77 (range $4.16 – $33.40)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

Obstetrics & Gynecology
17000 MEDICAL CENTER DR
BATON ROUGE, LA 70816
Physician Assistant
17000 MEDICAL CENTER DR
BATON ROUGE, LA 70816
Nurse Practitioner
17000 MEDICAL CENTER DR
BATON ROUGE, LA 70816
Internal Medicine
17000 MEDICAL CENTER DR
BATON ROUGE, LA 70816
Pharmacist
17000 MEDICAL CENTER DR
BATON ROUGE, LA 70816
General Acute Care Hospital
17000 MEDICAL CENTER DR
BATON ROUGE, LA 70816
Hospitalist
17000 MEDICAL CENTER DR
BATON ROUGE, LA 70816
Emergency Medicine
17000 MEDICAL CENTER DR, DEPARTMENT OF EMERGENCY MEDICINE
BATON ROUGE, LA 70816

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 Nnadi's NPI number?

The NPI number for John Nnadi is 1558506782. It was assigned to this individual provider in the NPPES registry on December 2, 2008.

Where is John Nnadi located?

John Nnadi practices at 17000 Medical Center Dr, Baton Rouge, LA 70816. The listed phone number is (225) 752-2470.

What is John Nnadi's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Is John Nnadi enrolled in Medicare?

Yes. John Nnadi 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.

What insurance does John Nnadi accept?

Health plans from Blue Cross and Blue Shield of Louisiana, Blue Cross and Blue Shield of Texas and HMO Louisiana list John Nnadi 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 Nnadi affiliated with any hospitals?

According to CMS data, John Nnadi is affiliated with Baton Rouge General Medical Center, Ochsner Medical Center - Baton Rouge, Trios Health and Lourdes Medical Center.

When was this NPI record last updated?

The NPPES record for John Nnadi was last updated on November 17, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.