Dr. John Hong, MD
- Medicare services, 2024
- 164
- Medicare patients, 2026
- 94
- Part D claims, 2019
- 12
- Hospital affiliations
- 3
- Industry payments
- $263
- Practice address
- 10010 Kennerly Road, Saint Louis, MO 63128
- Practice phone
- Call (314) 525-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Hong'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. John Hong is a general surgeon in Saint Louis, Missouri
Dr. Hong practices at Mercy Hospital South in Saint Louis, Missouri, part of Mercy.
Dr. Hong's NPI, 1578624201, was assigned on December 13, 2006. Dr. Hong graduated from University of Cincinnati College of Medicine in 1992. Dr. Hong holds North Dakota license 22042.
- NPI
- 1578624201NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0941226948
- NPI enumeration date
- December 13, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (314) 525-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 60
- Medical school graduation
- 1992
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John Hong practices at Mercy Hospital South in Saint Louis, Missouri
Dr. Hong's primary practice is Mercy Hospital South, at 10010 Kennerly Road, Saint Louis, MO 63128 in St. Louis County. The practice phone is (314) 525-1000.
- Mercy Hospital South10010 Kennerly Road, Saint Louis, MO 63128 · St. Louis CountyPhone(314) 525-1000
Source: Dmand AI Affiliation Data
Dr. John Hong is affiliated with 7 sites of care and 6 medical groups
Dr. Hong's primary practice is Mercy Hospital South in Saint Louis, Missouri, part of Mercy. Dr. Hong is also affiliated with Kaweah Health Medical Center. The medical group on file is Mercy Clinic Surgical Specialists. Dmand AI also links Dr. Hong to 1 more hospital, 5 medical groups and 4 group practices and clinics, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John Hong's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hong practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mercy Hospital South | Available with a free account |
| +6 more sites and 5 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Mercy and 6.2K+ hospitals, with verified contacts in the same login.
Dr. John Hong is one of 593 general surgeons in Missouri
Surgery is Dr. Hong's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dmand AI has Dr. Hong's licenses on file in 2 states: North Dakota and Pennsylvania.
Specialties and state licenses
- Surgery, North DakotaPrimary
- Surgical critical care, Pennsylvania
General surgeons near Dr. Hong
Counts of general surgeons 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. John Hong billed Medicare for 164 services in 2024
CMS data shows 164 Medicare services from Dr. Hong across 2 procedure codes in 2024, all of them office visits, for 94 Medicare patients. Medicare paid $4,461 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Hong's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 722024: 164128%
- Tests and treatments
- 2023: 552024: 0100%
Dr. Hong compared with the Missouri median for general surgeons, 2024
- Dr. Hong
- Missouri median
- Medicare services
- 164vs 169Close to median
- Medicare patients
- 94vs 12726% below
- Part D claims
- 12vs 4171% below
Medians across 570 general surgeons in Missouri with Dmand AI profiles that report each measure.
Dr. Hong'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.
Need commercial claims for Dr. Hong?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Hong and other general surgeons in Missouri.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John Hong treated 94 Medicare patients in 2026, average age 74
CMS counts 94 Medicare patients who saw Dr. Hong in 2026. The largest group is 65 to 74, with 39 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 14% are also on Medicaid. Their average risk score is 2.57, 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. Hong's median patient age at 69, with 39% women.
Dr. Hong's Medicare patients by age, 2026
Dr. Hong's Medicare patients by sex, 2026
- Women3941%
- Men5559%
Chronic conditions among Dr. Hong's Medicare patients, 2026
- High blood pressure75%
- High cholesterol75%
- Arthritis53%
- Chronic kidney disease51%
- Diabetes50%
- Ischemic heart disease45%
- Heart failure36%
- Anxiety35%
Share of Medicare patients with each condition. A patient can have several.
Dr. Hong's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women39%
- Men61%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2026 data
Dr. John Hong wrote 12 Medicare Part D claims in 2019
In 2019, Dr. Hong wrote 12 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $38 in total drug cost. In 2018, CMS named 17 claims across 1 drug.
Dr. Hong's most prescribed drugs by claims, 2019
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2018 to 2019
- 2018
- 2019
- Claims for drugs CMS names
- 2018: 172019: 1229%
Drugs named by CMS: 1 in 2019, 1 in 2018.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
How Dr. John Hong takes part in Medicare
Dr. Hong accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. John Hong received $263 in industry payments from 2016 to 2021
CMS Open Payments shows 16 general payments to Dr. Hong from 5 drug and device companies from 2016 to 2021. Food and beverage make up the largest share, 100% of the total. Allergan Inc. paid the most, $189.
General payments to Dr. Hong by program year, 2016 to 2021
Companies that paid Dr. Hong the most, 2016 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John Hong graduated from University of Cincinnati College of Medicine
Dr. Hong graduated from University of Cincinnati College of Medicine in 1992.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John Hong'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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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. John Hong
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. John Hong's NPI number?
Dr. John Hong's NPI number is 1578624201. It was assigned on December 13, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John Hong?
Dr. John Hong is a general surgeon in Saint Louis, Missouri. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. John Hong practice?
Dr. Hong practices at 10010 Kennerly Road, Saint Louis, MO 63128. Dr. Hong's primary practice is Mercy Hospital South in Saint Louis, Missouri, part of Mercy. Dmand AI also links Dr. Hong to 1 hospital, 5 medical groups and 4 group practices and clinics, and a free account names each one.
What is Dr. John Hong's office phone number?
The practice phone on file for Dr. Hong is (314) 525-1000. Dmand AI also checks direct phone and mobile numbers, available with a free account.
What is Dr. John Hong's email address?
Dmand AI checks professional and personal email addresses for Dr. Hong through healthcare-specific waterfall enrichment. They are available with a free Dmand AI account.
What is Dr. John Hong's medical license number?
Dr. Hong holds North Dakota license 22042, one of the licenses on file in 2 states.
Which states has Dr. John Hong been licensed in?
Dmand AI has state licenses on file for Dr. Hong in North Dakota and Pennsylvania.
Which hospitals is Dr. John Hong affiliated with?
Dr. Hong practices at Mercy Hospital South in Saint Louis, Missouri. Dr. Hong is also affiliated with Kaweah Health Medical Center. Dmand AI links Dr. Hong to 1 more hospital, named with a free account.
What medical group is Dr. John Hong part of?
Dr. Hong is linked to Mercy Clinic Surgical Specialists. Dmand AI links Dr. Hong to 5 more medical groups, named with a free account.
Who does Dr. John Hong practice with?
Dmand AI links 132 HCPs to Dr. Hong's primary medical group, 27 of them general surgeons. A free account lists them, with verified contacts.
Show 8 more questionsShow fewer questions
Does Dr. John Hong accept Medicare?
Yes. CMS data shows Dr. Hong billed Medicare for 164 services in 2024, and Dr. Hong accepts Medicare assignment.
How many Medicare patients does Dr. John Hong see?
CMS counts 94 Medicare patients who saw Dr. Hong in 2026, with an average age of 74.
What services does Dr. John Hong bill to Medicare?
In 2024, Dr. Hong's most billed Medicare services were office visit, established patient (99212) and office visit, new patient (99202).
Where did Dr. John Hong go to medical school?
Dr. Hong graduated from University of Cincinnati College of Medicine in 1992.
What drugs does Dr. John Hong prescribe most?
In 2019 Medicare Part D data, Dr. Hong's most prescribed drugs by claims were Oxycodone HCl.
Has Dr. John Hong received payments from drug or device companies?
CMS Open Payments shows $263 in general payments to Dr. Hong from 5 companies from 2016 to 2021. The largest total came from Allergan Inc.
How long has Dr. John Hong been practicing?
Dr. Hong graduated from medical school in 1992, 34 years ago.
What EHR does Dr. John Hong's practice use?
Dmand AI tracks the EHR system at Mercy Hospital South and at 6 more sites and 5 medical groups. The vendor and product are available with a free Dmand AI account.
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