DR. JOHN DAVIS BUTLER JR. M.D.
NPI 1447303458
Surgery in Gaithersburg, MD
About Dr. John Davis Butler Jr. M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN DAVIS BUTLER JR. M.D. (NPI 1447303458) is an individual surgery provider in Gaithersburg, Maryland, licensed in District Of Columbia (17730) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS, is affiliated with Holy Cross Hospital, 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 and accepts Medicare assignment
Dr. John Davis Butler Jr. 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 Reassignment
Medicare enrollment records show John Butler reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Gaithersburg, MD 20879
- Reassigned Medicare billing, District of Columbia enrollment
- Also billed through NPI 1497023188 (District of Columbia), NPI 1578638425 (District of Columbia), NPI 1366781700 (District of Columbia)
- 2,492 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Holy Cross Hospital
Acute Care Hospitals · Silver Spring, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20879 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Butler's NPI number?
The NPI number for John Butler is 1447303458. It was assigned to this individual provider in the NPPES registry on January 21, 2007.
Where is John Butler located?
John Butler practices at 655 Watkins Mill Rd Fl 6, Gaithersburg, MD 20879. The listed phone number is (240) 632-4475.
What is John Butler's specialty?
The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.
Is John Butler enrolled in Medicare?
Yes. John Butler 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 organization bills Medicare for John Butler's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Butler reassigns Medicare benefits to Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc (Gaithersburg, MD). The 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 Butler's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is John Butler affiliated with any hospitals?
According to CMS data, John Butler is affiliated with Holy Cross Hospital.
When was this NPI record last updated?
The NPPES record for John Butler was last updated on June 10, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Dr. John Davis Butler Jr., M.D. · NPI 1447303458
Surgery physician in Gaithersburg, Maryland. Individual provider, active in the CMS NPPES registry since January 21, 2007.
## Identity
- **NPI:** 1447303458 (Entity type: Individual)
- **Enumerated:** January 21, 2007
- **Primary specialty:** Surgery · taxonomy 208600000X
- **State license:** 17730 (District of Columbia)
- **Sole proprietor:** No
## Practice location
- **Address:** 655 WATKINS MILL RD FL 6, Gaithersburg, MD 20879-3301
- **Phone:** (240) 632-4475
## 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:** Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc (NPI 1831471713, Gaithersburg, MD), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Johns Hopkins University School Of Medicine, class of 1986
## Record status
- **NPPES last updated:** June 10, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1447303458) · Data from the CMS NPPES public registry.