Johnson Wong
- Medicare services, 2024
- 26
- Medicare patients, 2024
- 38
- Part D claims, 2019
- 45
- Hospital affiliations
- 1
- Industry payments
- $14
- Practice address
- 615 New Ballas Road, Saint Louis, MO 63141
- Practice phone
- Call (314) 251-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Johnson Wong is an internist in Saint Louis, Missouri
Johnson Wong practices at Mercy Hospital St. Louis in Saint Louis, Missouri, part of Mercy.
Johnson Wong's NPI, 1861846909, was assigned on April 14, 2016. Johnson Wong graduated from Meharry Medical College School of Medicine in 2016. Johnson Wong holds Missouri license 2019012319.
- NPI
- 1861846909NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2466780770
- NPI enumeration date
- April 14, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (314) 251-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Johnson Wong practices at Mercy Hospital St. Louis in Saint Louis, Missouri
Johnson Wong's primary practice is Mercy Hospital St. Louis, at 615 New Ballas Road, Saint Louis, MO 63141 in St. Louis County. The practice phone is (314) 251-6000.
- Mercy Hospital St. Louis615 New Ballas Road, Saint Louis, MO 63141 · St. Louis CountyPhone(314) 251-6000
Source: Dmand AI Affiliation Data
Johnson Wong is affiliated with 4 sites of care and 4 medical groups
Johnson Wong's primary practice is Mercy Hospital St. Louis in Saint Louis, Missouri, part of Mercy. The medical group on file is Mercy Hospital Jefferson. Dmand AI also links Johnson Wong to 3 more group practices and clinics and 3 medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Johnson Wong's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Johnson Wong practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mercy Hospital St. Louis | Available with a free account |
| +3 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Johnson Wong is one of 2,114 internists in Missouri
Internal medicine is Johnson Wong's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Johnson Wong is licensed in Missouri.
Specialties and state licenses
- Internal medicine, MissouriPrimary
Internists near Johnson Wong
Counts of internists 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
Johnson Wong billed Medicare for 26 services in 2024
CMS data shows 26 Medicare services from Johnson Wong across 1 procedure code in 2024, for 38 Medicare patients. Medicare paid $3,150 for them. Every service was in a facility, such as a hospital, rather than an office.
Johnson Wong's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1872024: 2686%
- Other services
- 2023: 252024: 0100%
Johnson Wong compared with the Missouri median for internists, 2024
- Johnson Wong
- Missouri median
- Medicare services
- 26vs 53095% below
- Medicare patients
- 38vs 21182% below
- Part D claims
- 45vs 32586% below
Medians across 2,076 internists in Missouri with Dmand AI profiles that report each measure.
Johnson Wong'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
Johnson Wong treated 38 Medicare patients in 2024, average age 76
CMS counts 38 Medicare patients who saw Johnson Wong in 2024. The largest group is 65 to 74, with 14 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 2.45, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Johnson Wong's median patient age at 66, with 56% women.
Johnson Wong's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Johnson Wong's Medicare patients by sex, 2024
- Women1847%
- Men2053%
Chronic conditions among Johnson Wong's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis68%
- Chronic kidney disease55%
- Atrial fibrillation50%
- Mood disorders45%
- Anxiety42%
- Depression42%
Share of Medicare patients with each condition. A patient can have several.
Johnson Wong's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women56%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Johnson Wong wrote 45 Medicare Part D claims in 2019
In 2019, Johnson Wong wrote 45 Medicare Part D claims. Every claim was for a generic drug. They cover 3 drugs, with $436 in total drug cost. In 2018, CMS named 77 claims across 5 drugs.
Johnson Wong'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: 772019: 4542%
Drugs named by CMS: 3 in 2019, 5 in 2018.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
Johnson Wong offers telehealth to Medicare patients
Johnson Wong accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Johnson Wong as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Johnson Wong received $14 in industry payments in 2019
CMS Open Payments shows 1 general payment to Johnson Wong from 1 drug or device company in 2019. Food and beverage make up the largest share, 100% of the total. Bristol-Myers Squibb Company paid the most, $14.
Companies that paid Johnson Wong the most, 2019 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Johnson Wong graduated from Meharry Medical College School of Medicine
Johnson Wong graduated from Meharry Medical College School of Medicine in 2016.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Johnson Wong'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) |
| 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 Johnson Wong
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Johnson Wong's NPI number?
Johnson Wong's NPI number is 1861846909. It was assigned on April 14, 2016, and it is active in the NPI Registry.
What does Johnson Wong specialize in?
Johnson Wong is an internist in Saint Louis, Missouri. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Johnson Wong practice?
Johnson Wong practices at 615 New Ballas Road, Saint Louis, MO 63141. Johnson Wong's primary practice is Mercy Hospital St. Louis in Saint Louis, Missouri, part of Mercy. Dmand AI also links Johnson Wong to 3 group practices and clinics and 3 medical groups.
What is Johnson Wong's office phone number?
The practice phone on file for Johnson Wong is (314) 251-6000.
What is Johnson Wong's medical license number?
Johnson Wong holds Missouri license 2019012319.
Which hospitals is Johnson Wong affiliated with?
Johnson Wong practices at Mercy Hospital St. Louis in Saint Louis, Missouri.
What medical group is Johnson Wong part of?
Johnson Wong is linked to Mercy Hospital Jefferson. Dmand AI links Johnson Wong to 3 more medical groups.
Does Johnson Wong accept Medicare?
Yes. CMS data shows Johnson Wong billed Medicare for 26 services in 2024, and Johnson Wong accepts Medicare assignment.
Does Johnson Wong offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Johnson Wong as offering telehealth services.
How many Medicare patients does Johnson Wong see?
CMS counts 38 Medicare patients who saw Johnson Wong in 2024, with an average age of 76.
Show 5 more questionsShow fewer questions
What services does Johnson Wong bill to Medicare?
In 2024, Johnson Wong's most billed Medicare services were hospital inpatient care (99223).
Where did Johnson Wong go to medical school?
Johnson Wong graduated from Meharry Medical College School of Medicine in 2016.
What drugs does Johnson Wong prescribe most?
In 2019 Medicare Part D data, Johnson Wong's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Hydrochlorothiazide.
Has Johnson Wong received payments from drug or device companies?
CMS Open Payments shows $14 in general payments to Johnson Wong from 1 company from 2019 to 2019. The largest total came from Bristol-Myers Squibb Company.
How long has Johnson Wong been practicing?
Johnson Wong graduated from medical school in 2016, 10 years ago.
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