JOHN MILTON IDSO MD
NPI 1437619087
Pediatrics in Washington, DC
About John Milton Idso Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN MILTON IDSO MD (NPI 1437619087) is an individual pediatrics provider in Washington, District Of Columbia, licensed in Virginia (0101277272) and active in the NPI registry since March 2019. He is enrolled in Medicare PECOS and maintains a secondary practice location in Washington.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
John Milton Idso Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show John Idso reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Washington, DC 20010
- Reassigned Medicare billing, District of Columbia enrollment
- 1,417 clinicians in this Medicare group
Fredericksburg, VA 22401
- Reassigned Medicare billing, Virginia enrollment
- 547 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20010 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.
WASHINGTON, DC 20010
WASHINGTON, DC 20010
WASHINGTON, DC 20010
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 John Idso's NPI number?
The NPI number for John Idso is 1437619087. It was assigned to this individual provider in the NPPES registry on March 20, 2019.
Where is John Idso located?
John Idso practices at 111 Michigan Ave NW, Washington, DC 20010. The listed phone number is (202) 476-5000.
What is John Idso's specialty?
The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.
Is John Idso enrolled in Medicare?
Yes. John Idso is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for John Idso's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Idso reassigns Medicare benefits to 2 organizations: Children's Hospital (Washington, DC) and Mary Washington Healthcare Physicians (Fredericksburg, VA). 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 John Idso's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for John Idso was last updated on July 7, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years 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.
# John Milton Idso, MD · NPI 1437619087
Pediatrics physician in Washington, District of Columbia. Individual provider, active in the CMS NPPES registry since March 20, 2019.
## Identity
- **NPI:** 1437619087 (Entity type: Individual)
- **Enumerated:** March 20, 2019
- **Primary specialty:** Pediatrics · taxonomy 208000000X
- **State license:** 0101277272 (Virginia)
- **Sole proprietor:** No
## Practice location
- **Address:** 111 MICHIGAN AVE NW, Washington, DC 20010-2916
- **Phone:** (202) 476-5000
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **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): Children's Hospital (NPI 1780800128, Washington, DC); Mary Washington Healthcare Physicians (NPI 1295999852, Fredericksburg, VA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 7, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1437619087) · Data from the CMS NPPES public registry.