Dr. Michael A. Johnson, MD
- Part D claims, 2021
- 11
- Industry payments
- $18
- Affiliated sites
- 1
- Medical group
- 1
- State license
- 1
- Practice address
- 801 S 70th St, Milwaukee, WI 53214
- Practice phone
- Call (414) 585-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Ascension Columbia St Mary's Hospital Milwaukee
Milwaukee, Wisconsin
Find Dr. Johnson'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. Michael A. Johnson is a pediatrician in Milwaukee, Wisconsin
Dr. Johnson practices at Ascension Columbia St Mary's Hospital Milwaukee in Milwaukee, Wisconsin.
Dr. Johnson's NPI, 1366403743, was assigned on March 28, 2006. Dr. Johnson graduated from Loyola University of Chicago, Stritch School of Medicine in 1995. Dr. Johnson holds Wisconsin license 38024.
- NPI
- 1366403743NPI Registry (opens in a new tab)
- NPI enumeration date
- March 28, 2006
- NPI status
- Active
- Practice phone
- (414) 585-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 57
- Medical school graduation
- 1995
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Michael A. Johnson practices at Ascension Columbia St Mary's Hospital Milwaukee in Milwaukee, Wisconsin
Dr. Johnson's primary practice is Ascension Columbia St Mary's Hospital Milwaukee, at 801 S 70th St, Milwaukee, WI 53214 in Milwaukee County. The practice phone is (414) 585-1000.
- Ascension Columbia St Mary's Hospital Milwaukee801 S 70th St, Milwaukee, WI 53214 · Milwaukee CountyPhone(414) 585-1000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Michael A. Johnson is affiliated with 2 sites of care and 1 medical group
Dr. Johnson's primary practice is Ascension Columbia St Mary's Hospital Milwaukee in Milwaukee, Wisconsin. The medical group on file is Ascension Columbia St. Mary's Hospital - Milwaukee Campus. Dmand AI also links Dr. Johnson to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Michael A. Johnson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Johnson practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ascension Columbia St Mary's Hospital Milwaukee | 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. Michael A. Johnson is one of 948 pediatricians in Wisconsin
Pediatrics is Dr. Johnson's primary specialty in the NPI Registry, under taxonomy code 208000000X. Dr. Johnson is licensed in Wisconsin.
Specialties and state licenses
- Pediatrics, WisconsinPrimary
Pediatricians near Dr. Johnson
Counts of pediatricians 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. Michael A. Johnson's patients have a median age of 10
Across all payers, Dmand AI patient panel data puts Dr. Johnson's median patient age at 10, with 45% women.
Dr. Johnson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 10
Patient panel by sex, all payers
- Women45%
- Men55%
Source: Dmand AI Patient Panel Data
Dr. Michael A. Johnson wrote 11 Medicare Part D claims in 2021
In 2021, Dr. Johnson wrote 11 Medicare Part D claims. They cover 1 drug, with $6,410 in total drug cost. In 2020, CMS named 12 claims across 1 drug.
Dr. Johnson's most prescribed drugs by claims, 2021
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, 2020 to 2021
- 2020
- 2021
- Claims for drugs CMS names
- 2020: 122021: 118%
Drugs named by CMS: 1 in 2021, 1 in 2020.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Michael A. Johnson received $18 in industry payments in 2025
CMS Open Payments shows 1 general payment to Dr. Johnson from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Cranial Technologies, Inc paid the most, $18.
Companies that paid Dr. Johnson the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Michael A. Johnson graduated from Loyola University of Chicago, Stritch School of Medicine
Dr. Johnson graduated from Loyola University of Chicago, Stritch School of Medicine in 1995.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Michael A. Johnson'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (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. Michael A. Johnson
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. Michael A. Johnson's NPI number?
Dr. Michael A. Johnson's NPI number is 1366403743. It was assigned on March 28, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Michael A. Johnson?
Dr. Michael A. Johnson is a pediatrician in Milwaukee, Wisconsin. The primary specialty in the NPI Registry is Pediatrics Physician (taxonomy code 208000000X).
Where does Dr. Michael A. Johnson practice?
Dr. Johnson practices at 801 S 70th St, Milwaukee, WI 53214. Dr. Johnson's primary practice is Ascension Columbia St Mary's Hospital Milwaukee in Milwaukee, Wisconsin. Dmand AI also links Dr. Johnson to 1 group practice or clinic.
What is Dr. Michael A. Johnson's office phone number?
The practice phone on file for Dr. Johnson is (414) 585-1000.
What is Dr. Michael A. Johnson's medical license number?
Dr. Johnson holds Wisconsin license 38024.
What medical group is Dr. Michael A. Johnson part of?
Dr. Johnson is linked to Ascension Columbia St. Mary's Hospital - Milwaukee Campus.
Where did Dr. Michael A. Johnson go to medical school?
Dr. Johnson graduated from Loyola University of Chicago, Stritch School of Medicine in 1995.
What drugs does Dr. Michael A. Johnson prescribe most?
In 2021 Medicare Part D data, Dr. Johnson's most prescribed drugs by claims were Humalog.
Has Dr. Michael A. Johnson received payments from drug or device companies?
CMS Open Payments shows $18 in general payments to Dr. Johnson from 1 company from 2025 to 2025. The largest total came from Cranial Technologies, Inc.
How long has Dr. Michael A. Johnson been practicing?
Dr. Johnson graduated from medical school in 1995, 31 years ago.
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