Doctor profile · Federal record

Dr. Maria Akamnonu, M.D.

Hospitalist Physician (CMS: Internal Medicine) · Internal Medicine Physician · Riverside, CA

  • NPI 1023403730
  • Accepts Medicare
  • 15 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
4445 Magnolia Ave
Riverside, CA 925014135
(951) 788-3000
Additional location
3865 Jackson St
Riverside, CA 925033919
(951) 688-2211
Mailing address
12223 Highland Ave, Ste 106-526
Rancho Cucamonga, CA 917392574

Credentials & registration

NPPES · NUCC
NPI registered
March 2015 — 11 yrs on file
Profile last updated
August 30, 2021
Year of graduation
2011 — 15 yrs since
Specialty taxonomy
208M00000X — NUCC code
State license (1)
California #A157203

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1023403730. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
103
Distinct HCPCS
3
Medicare allowed
$13,473
HCPCS Description Services Patients Avg allowed
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 72 33 $121
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 19 18 $176
99239 Hospital discharge day management, more than 30 minutes 12 12 $117

In context: peer comparison

Among 9 peers in Riverside Hospitalist Physician, average services per provider: 88. This provider delivers 1.2× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$128
Transactions
2
Manufacturers
2
Payer (manufacturer) Industry Txns Amount
Zoll Services LLC (A/K/A Zoll LifeCor Corp) 1 $99.04
Novartis Pharmaceuticals Corporation 1 $29.25

By nature of payment

Food and Beverage
$128

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
147
Patients
134
Total drug cost
$889
Drug Type Claims Patients Total cost
Atorvastatin Calcium Generic 34 31 $287
Amlodipine Besylate Generic 20 17 $77
Pantoprazole Sodium Generic 16 15 $94
Carvedilol Generic 14 14 $78
Clopidogrel (Clopidogrel Bisulfate) Brand 13 12 $120
Lisinopril Generic 13 12 $68
Metoprolol Tartrate Generic 13 11 $54
Furosemide Generic 12 11 $46
Losartan Potassium Generic 12 11 $64

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Maria Akamnonu's medical specialty?
Dr. Maria Akamnonu practices Hospitalist Physician in Riverside, CA.
Where does Dr. Maria Akamnonu practice?
Dr. Maria Akamnonu practices at 4445 Magnolia Ave, Riverside, CA 925014135. Office phone: 9517883000.
What is Dr. Maria Akamnonu's NPI?
Dr. Maria Akamnonu's National Provider Identifier (NPI) is 1023403730, issued by NPPES.
Does Dr. Maria Akamnonu accept Medicare assignment?
Yes. Dr. Maria Akamnonu accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Maria Akamnonu commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Initial hospital care with moderate level of medical decision making (HCPCS 99223); Hospital discharge day management (HCPCS 99239). Source: CMS Medicare Physician & Other Practitioners file.