Karen Anne Johnson
- Part D claims, 2024
- 664
- Hospital affiliations
- 2
- Industry payments
- $17
- Medical group
- 1
- State license
- 1
- Practice address
- 1500 E Medical Center Dr, Ann Arbor, MI 48109
- Practice phone
- Call (734) 936-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
University Hospital in Ann Arbor
Ann Arbor, Michigan
Find Karen 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.
Karen Anne Johnson is a family nurse practitioner in Ann Arbor, Michigan
Karen Johnson practices at University Hospital in Ann Arbor in Ann Arbor, Michigan.
Karen Johnson's NPI, 1538849906, was assigned on July 20, 2023. Karen Johnson holds Michigan license 4704359784.
- NPI
- 1538849906NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6103274535
- NPI enumeration date
- July 20, 2023
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (734) 936-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 29
- Medical school graduation
- 2023
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Karen Anne Johnson practices at University Hospital in Ann Arbor in Ann Arbor, Michigan
Karen Johnson's primary practice is University Hospital in Ann Arbor, at 1500 E Medical Center Dr, Ann Arbor, MI 48109 in Washtenaw County. The practice phone is (734) 936-4000.
- University Hospital in Ann Arbor1500 E Medical Center Dr, Ann Arbor, MI 48109 · Washtenaw CountyPhone(734) 936-4000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Karen Anne Johnson is affiliated with 4 sites of care and 1 medical group
Karen Johnson's primary practice is University Hospital in Ann Arbor in Ann Arbor, Michigan. Karen Johnson is also affiliated with University Hospital. The medical group on file is Packard Health. Dmand AI also links Karen Johnson to 1 more hospital and 1 community health center, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Karen Anne Johnson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Karen Johnson practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| University Hospital in Ann Arbor | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Karen Anne Johnson is one of 4,420 family nurse practitioners in Michigan
Family is Karen Johnson's primary specialty in the NPI Registry, under taxonomy code 363LF0000X. Karen Johnson is licensed in Michigan.
Specialties and state licenses
- Family nurse practitioner, MichiganPrimary
Family nurse practitioners near Karen Johnson
Counts of family nurse practitioners 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
Karen Anne Johnson's patients have a median age of 39
Across all payers, Dmand AI patient panel data puts Karen Johnson's median patient age at 39, with 62% women.
Karen 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 39
Patient panel by sex, all payers
- Women62%
- Men38%
Source: Dmand AI Patient Panel Data
Karen Anne Johnson wrote 664 Medicare Part D claims in 2024
In 2024, Karen Johnson wrote 664 Medicare Part D claims for 127 patients. 86% of them were for generic drugs.
Karen Johnson's Part D claims by kind of drug, 2024
- Generic574 claims86%
- Brand-name and other90 claims14%
Drug classes CMS tracks in Karen Johnson's Part D claims, 2024
- Antibiotics8%55 of 664 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Karen Anne Johnson takes part in Medicare
Karen Johnson 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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Karen Anne Johnson received $17 in industry payments in 2025
CMS Open Payments shows 1 general payment to Karen Johnson from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Gilead Sciences, Inc. paid the most, $17.
Companies that paid Karen 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
Sources for Karen Anne 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 DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | 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 Karen Anne 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 Karen Anne Johnson's NPI number?
Karen Anne Johnson's NPI number is 1538849906. It was assigned on July 20, 2023, and it is active in the NPI Registry.
What does Karen Anne Johnson specialize in?
Karen Anne Johnson is a family nurse practitioner in Ann Arbor, Michigan. The primary specialty in the NPI Registry is Family Nurse Practitioner (taxonomy code 363LF0000X).
Where does Karen Anne Johnson practice?
Karen Johnson practices at 1500 E Medical Center Dr, Ann Arbor, MI 48109. Karen Johnson's primary practice is University Hospital in Ann Arbor in Ann Arbor, Michigan. Dmand AI also links Karen Johnson to 1 hospital and 1 community health center.
What is Karen Anne Johnson's office phone number?
The practice phone on file for Karen Johnson is (734) 936-4000.
What is Karen Anne Johnson's medical license number?
Karen Johnson holds Michigan license 4704359784.
Which hospitals is Karen Anne Johnson affiliated with?
Karen Johnson is affiliated with University Hospital. Dmand AI links Karen Johnson to 1 more hospital.
What medical group is Karen Anne Johnson part of?
Karen Johnson is linked to Packard Health.
Does Karen Anne Johnson accept Medicare?
Yes. CMS lists Karen Johnson as accepting Medicare assignment.
Has Karen Anne Johnson received payments from drug or device companies?
CMS Open Payments shows $17 in general payments to Karen Johnson from 1 company from 2025 to 2025. The largest total came from Gilead Sciences, Inc.
How long has Karen Anne Johnson been practicing?
Karen Johnson graduated from medical school in 2023, 3 years ago.
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