Dr. Allan L. Ong, MD
- Medicare services, 2024
- 719
- Medicare patients, 2024
- 247
- Part D claims, 2024
- 416
- Hospital affiliations
- 2
- Industry payments
- $1,211
- Practice address
- 5666 East State Street, Rockford, IL 61108
- Practice phone
- Call (815) 226-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Ong's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Allan L. Ong is a hospitalist in Rockford, Illinois
Dr. Ong practices at OSF Saint Anthony Medical Center in Rockford, Illinois, part of OSF HealthCare System.
Dr. Ong's NPI, 1760411367, was assigned on July 3, 2006. Dr. Ong holds Illinois license 036111976.
- NPI
- 1760411367NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0244293546
- NPI enumeration date
- July 3, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (815) 226-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 53
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Allan L. Ong practices at OSF Saint Anthony Medical Center in Rockford, Illinois
Dr. Ong's primary practice is OSF Saint Anthony Medical Center, at 5666 East State Street, Rockford, IL 61108 in Winnebago County. The practice phone is (815) 226-2000.
- OSF Saint Anthony Medical Center5666 East State Street, Rockford, IL 61108 · Winnebago CountyPhone(815) 226-2000
Source: Dmand AI Affiliation Data
Dr. Allan L. Ong is affiliated with 2 sites of care and 1 medical group
Dr. Ong's primary practice is OSF Saint Anthony Medical Center in Rockford, Illinois, part of OSF HealthCare System. Dr. Ong is also affiliated with OSF Saint Elizabeth Medical Center - Peru. The medical group on file is OSF Multi-Specialty Group.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Allan L. Ong's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ong practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| OSF Saint Anthony Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Allan L. Ong is one of 1,321 hospitalists in Illinois
Hospitalist is Dr. Ong's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dr. Ong is licensed in Illinois.
Specialties and state licenses
- Hospitalist, IllinoisPrimary
Hospitalists near Dr. Ong
Counts of hospitalists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Allan L. Ong billed Medicare for 719 services in 2024
CMS data shows 719 Medicare services from Dr. Ong across 6 procedure codes in 2024, for 247 Medicare patients. Medicare paid $54,173 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Ong's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 8962024: 71920%
Dr. Ong compared with the Illinois median for hospitalists, 2024
- Dr. Ong
- Illinois median
- Medicare services
- 719vs 54332% above
- Medicare patients
- 247vs 242Close to median
- Part D claims
- 180vs 533.4 times
Medians across 1,248 hospitalists in Illinois with Dmand AI profiles that report each measure.
Dr. Ong's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Allan L. Ong treated 247 Medicare patients in 2024, average age 76
CMS counts 247 Medicare patients who saw Dr. Ong in 2024. The largest group is 75 to 84, with 88 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 23% are also on Medicaid. Their average risk score is 2.38, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Ong's median patient age at 77, with 54% women.
Dr. Ong's Medicare patients by age, 2024
Dr. Ong's Medicare patients by sex, 2024
- Women11948%
- Men12852%
Chronic conditions among Dr. Ong's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis60%
- Heart failure58%
- Chronic kidney disease55%
- Diabetes53%
- Ischemic heart disease53%
- Atrial fibrillation41%
Share of Medicare patients with each condition. A patient can have several.
Dr. Ong's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 77
Patient panel by sex, all payers
- Women54%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Allan L. Ong wrote 416 Medicare Part D claims in 2024
In 2024, Dr. Ong wrote 416 Medicare Part D claims for 153 patients. 81% of them were for generic drugs. CMS names the drug for 180 of them, across 12 drugs with 11 or more claims each, at $10,021 in total drug cost. In 2023, CMS named 134 claims across 8 drugs.
Dr. Ong's Part D claims by kind of drug, 2024
- Generic339 claims81%
- Brand-name and other77 claims19%
Dr. Ong's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Ong's Part D claims, 2024
- Opioids8%34 of 416 claims
- Antibiotics16%65 of 416 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1342024: 18034%
Drugs named by CMS: 12 in 2024, 8 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Allan L. Ong takes part in Medicare
Dr. Ong accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Allan L. Ong received $1,211 in industry payments from 2016 to 2023
CMS Open Payments shows 45 general payments to Dr. Ong from 16 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $374.
General payments to Dr. Ong by program year, 2016 to 2023
Companies that paid Dr. Ong the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Allan L. Ong's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Allan L. Ong
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Allan L. Ong's NPI number?
Dr. Allan L. Ong's NPI number is 1760411367. It was assigned on July 3, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Allan L. Ong?
Dr. Allan L. Ong is a hospitalist in Rockford, Illinois. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Dr. Allan L. Ong practice?
Dr. Ong practices at 5666 East State Street, Rockford, IL 61108. Dr. Ong's primary practice is OSF Saint Anthony Medical Center in Rockford, Illinois, part of OSF HealthCare System.
What is Dr. Allan L. Ong's office phone number?
The practice phone on file for Dr. Ong is (815) 226-2000.
What is Dr. Allan L. Ong's medical license number?
Dr. Ong holds Illinois license 036111976.
Which hospitals is Dr. Allan L. Ong affiliated with?
Dr. Ong practices at OSF Saint Anthony Medical Center in Rockford, Illinois. Dr. Ong is also affiliated with OSF Saint Elizabeth Medical Center - Peru.
What medical group is Dr. Allan L. Ong part of?
Dr. Ong is linked to OSF Multi-Specialty Group.
Does Dr. Allan L. Ong accept Medicare?
Yes. CMS data shows Dr. Ong billed Medicare for 719 services in 2024, and Dr. Ong accepts Medicare assignment.
How many Medicare patients does Dr. Allan L. Ong see?
CMS counts 247 Medicare patients who saw Dr. Ong in 2024, with an average age of 76.
What services does Dr. Allan L. Ong bill to Medicare?
In 2024, Dr. Ong's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99239) and hospital inpatient care (99233).
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What drugs does Dr. Allan L. Ong prescribe most?
In 2024 Medicare Part D data, Dr. Ong's most prescribed drugs by claims were Amoxicillin-Clavulanate Potass, Prednisone and Hydrocodone-Acetaminophen.
Has Dr. Allan L. Ong received payments from drug or device companies?
CMS Open Payments shows $1,211 in general payments to Dr. Ong from 16 companies from 2016 to 2023. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Allan L. Ong been practicing?
Dr. Ong graduated from medical school in 1999, 27 years ago.
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