Doctor profile · Federal record

Dr. Allan Ong, M.D.

Hospitalist Physician (CMS: Hospitalist) · Rockford, IL

  • NPI 1760411367
  • Accepts Medicare
  • 27 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
5666 East State St
Rockford, IL 611082472
(815) 226-2000
fax (815) 227-2880

Credentials & registration

NPPES · NUCC
NPI registered
July 2006 — 20 yrs on file
Profile last updated
January 29, 2020
Year of graduation
1999 — 27 yrs since
Specialty taxonomy
208M00000X — NUCC code
State license (1)
Illinois #036111976

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1760411367. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
896
Distinct HCPCS
7
Medicare allowed
$88,285
HCPCS Description Services Patients Avg allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 511 207 $77
99239 Hospital discharge day management, more than 30 minutes 135 129 $111
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 79 60 $116
99291 Critical care, first 30-74 minutes 75 33 $210
99231 Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 50 25 $49
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 34 34 $170
99238 Hospital discharge day management, 30 minutes or less 12 12 $78

In context: peer comparison

Among 9 peers in this city , average services per provider: 114. This provider delivers 7.9× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
134
Patients
92
Total drug cost
$1,170
Drug Type Claims Patients Total cost
Furosemide Generic 22 16 $121
Spironolactone Generic 20 14 $108
Prednisone Generic 17 17 $55
Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) Brand 16 16 $95
Cephalexin Generic 16 16 $75
Potassium Chloride Generic 16 0 $448
Metoprolol Succinate Generic 14 0 $222
Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) Brand 13 13 $46

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Allan Ong's medical specialty?
Dr. Allan Ong practices Hospitalist Physician in Rockford, IL.
Where does Dr. Allan Ong practice?
Dr. Allan Ong practices at 5666 East State St, Rockford, IL 611082472. Office phone: 8152262000.
What is Dr. Allan Ong's NPI?
Dr. Allan Ong's National Provider Identifier (NPI) is 1760411367, issued by NPPES.
Does Dr. Allan Ong accept Medicare assignment?
Yes. Dr. Allan Ong accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Allan Ong commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Hospital discharge day management (HCPCS 99239); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233). Source: CMS Medicare Physician & Other Practitioners file.