Karen Johns, MD
NPI 1558101832 · Internal Medicine Physician · Iowa City, IA
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Johns, MD is a Internal Medicine Physician provider in Iowa City, IA (NPI 1558101832).
Provider details
- NPI number
- 1558101832
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- R-13170 (IA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
2 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2024-05-25
- Last updated
- 2024-05-25
- Certified
- 2024-05-25
Frequently asked questions
- What is Karen Johns's NPI number?
- Karen Johns's National Provider Identifier (NPI) is 1558101832, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Johns's specialty?
- Karen Johns is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Karen Johns located?
- Karen Johns's practice location on file with NPPES is 200 Hawkins Dr, Iowa City, IA 52242-1009.
- What is Karen Johns's phone number?
- The practice phone number listed in the NPPES registry for Karen Johns is (319) 384-7093.
- Does Karen Johns accept Medicare?
- Karen Johns is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Johns's NPI active?
- Yes — Karen Johns's NPI (1558101832) is active in the NPPES registry as of the last update on 2024-05-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.