DR. REED A JOHNSON MD
NPI 1497378939
Internal Medicine in Iowa City, IA
About Dr. Reed A Johnson Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. REED A JOHNSON MD (NPI 1497378939) is an individual internal medicine provider in Iowa City, Iowa, licensed in Iowa (MD-50875) and active in the NPI registry since May 2020. He is enrolled in Medicare PECOS, is affiliated with University Of Iowa Health Care Medical Center Down, and maintains a secondary practice location in North Liberty.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Reed A Johnson Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Reed Johnson reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Iowa City, IA 52242
- Reassigned Medicare billing, Iowa enrollment
- 2,190 clinicians in this Medicare group
Muscatine, IA 52761
- Reassigned Medicare billing, Iowa enrollment
- 1,506 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 6
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
University Of Iowa Health Care Medical Center Down
Acute Care Hospitals · Iowa City, IAUniversity Of Iowa Hospital & Clinics
Acute Care Hospitals · Iowa City, IAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 52242 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
IOWA CITY, IA 52242
IOWA CITY, IA 52242
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Reed Johnson's NPI number?
The NPI number for Reed Johnson is 1497378939. It was assigned to this individual provider in the NPPES registry on May 19, 2020.
Where is Reed Johnson located?
Reed Johnson practices at 200 Hawkins Dr, Iowa City, IA 52242. The listed phone number is (319) 384-9668.
What is Reed Johnson's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Reed Johnson enrolled in Medicare?
Yes. Reed Johnson is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Reed Johnson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Reed Johnson reassigns Medicare benefits to 2 organizations: State University Of Iowa (Iowa City, IA) and Iowa Physicians Clinic Medical Foundation (Muscatine, IA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Reed Johnson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Reed Johnson accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan and Oscar Insurance Company and 1 other insurer list Reed Johnson as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Reed Johnson affiliated with any hospitals?
According to CMS data, Reed Johnson is affiliated with University Of Iowa Health Care Medical Center Down and University Of Iowa Hospital & Clinics.
When was this NPI record last updated?
The NPPES record for Reed Johnson was last updated on April 9, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Reed A Johnson, MD · NPI 1497378939
Internal Medicine physician in Iowa City, Iowa. Individual provider, active in the CMS NPPES registry since May 19, 2020.
## Identity
- **NPI:** 1497378939 (Entity type: Individual)
- **Enumerated:** May 19, 2020
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** MD-50875 (Iowa)
- **Sole proprietor:** No
## Practice location
- **Address:** 200 HAWKINS DR, Iowa City, IA 52242-1009
- **Phone:** (319) 384-9668 · **Fax:** (319) 384-8955
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): State University Of Iowa (NPI 1114905387, Iowa City, IA); Iowa Physicians Clinic Medical Foundation (NPI 1982831426, Muscatine, IA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Iowa, Rj & L Carver College Of Medicine, class of 2020
## Record status
- **NPPES last updated:** April 9, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1497378939) · Data from the CMS NPPES public registry.