ADAM J KNUDSON M.D.
NPI 1225455389
Internal Medicine in Washington, DC
About Adam J Knudson M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ADAM J KNUDSON M.D. (NPI 1225455389) is an individual internal medicine provider in Washington, District Of Columbia, licensed in District Of Columbia (MD500002502) and active in the NPI registry since March 2014. He is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Georgetown University School Of Medicine (2014).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
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
Adam J Knudson M.d. 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
3Medicare enrollment records show Adam Knudson reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Fairfax, VA 22031
- Reassigned Medicare billing, District of Columbia and Virginia enrollments
- 2,618 clinicians in this Medicare group
Baltimore, MD 21287
- Reassigned Medicare billing, District of Columbia enrollment
- 8 clinicians in this Medicare group
Pittsburgh, PA 15235
- Reassigned Medicare billing, Pennsylvania enrollment
- 7,114 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 5
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20016 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 20016
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 Adam Knudson's NPI number?
The NPI number for Adam Knudson is 1225455389. It was assigned to this individual provider in the NPPES registry on March 26, 2014.
Where is Adam Knudson located?
Adam Knudson practices at 5255 Loughboro Rd NW, Washington, DC 20016. The listed phone number is (202) 537-4560.
What is Adam Knudson's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Adam Knudson enrolled in Medicare?
Yes. Adam Knudson 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 Adam Knudson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Adam Knudson reassigns Medicare benefits to 3 organizations: Inova Health Care Services (Fairfax, VA), Johns Hopkins University (Baltimore, MD) and University Of Pittsburgh Physicians (Pittsburgh, PA). 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 Adam Knudson'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 Adam Knudson was last updated on January 6, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 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.
# Adam J Knudson, M.D. · NPI 1225455389
Internal Medicine physician in Washington, District of Columbia. Individual provider, active in the CMS NPPES registry since March 26, 2014.
## Identity
- **NPI:** 1225455389 (Entity type: Individual)
- **Enumerated:** March 26, 2014
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** MD500002502 (District of Columbia)
- **Sole proprietor:** No
## Practice location
- **Address:** 5255 LOUGHBORO RD NW, Washington, DC 20016-2633
- **Phone:** (202) 537-4560 · **Fax:** (202) 537-4006
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Inova Health Care Services (NPI 1669511051, Fairfax, VA); Johns Hopkins University (NPI 1689009045, Baltimore, MD); University Of Pittsburgh Physicians (NPI 1407985674, Pittsburgh, PA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Georgetown University School Of Medicine, class of 2014
## Record status
- **NPPES last updated:** January 6, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1225455389) · Data from the CMS NPPES public registry.