DAVID RUSSELL LANGDON M.D.
NPI 1083691034
Radiology - Diagnostic Radiology in Portland, ME
About David Russell Langdon M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DAVID RUSSELL LANGDON M.D. (NPI 1083691034) is an individual diagnostic radiology provider in Portland, Maine, licensed in Maine (015259) and active in the NPI registry since December 2005. He is enrolled in Medicare PECOS, is affiliated with St Joseph Hospital, and is a graduate of Boston University School Of Medicine (1991).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 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 (PECOS)
David Russell Langdon M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
7Medicare enrollment records show David Langdon reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Portland, ME 04102
- Reassigned Medicare billing, Maine enrollment
- 322 clinicians in this Medicare group
Portland, ME 04102
- Reassigned Medicare billing, Maine enrollment
- 9 clinicians in this Medicare group
Brunswick, ME 04011
- Reassigned Medicare billing, Maine enrollment
- 18 clinicians in this Medicare group
Hampton, NH 03842
- Reassigned Medicare billing, Maine and New Hampshire enrollments
- 20 clinicians in this Medicare group
Farmington, ME 04938
- Reassigned Medicare billing, Maine enrollment
- 22 clinicians in this Medicare group
Pittsfield, ME 04967
- Reassigned Medicare billing, Maine enrollment
- 140 clinicians in this Medicare group
Bangor, ME 04401
- Reassigned Medicare billing, Maine enrollment
- 25 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 84
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 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
St Joseph Hospital
Acute Care Hospitals · Bangor, MENorthern Light Health
Acute Care Hospitals · Portland, MENorthern Light Eastern Maine Medical Center
Acute Care Hospitals · Bangor, MENorthern Light Maine Coast Hospital
Acute Care Hospitals · Ellsworth, MEWaldo County General Hospital
Critical Access Hospitals · Belfast, MEPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 04101 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Reported Quality Measures
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.
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 David Langdon's NPI number?
The NPI number for David Langdon is 1083691034. It was assigned to this individual provider in the NPPES registry on December 29, 2005.
Where is David Langdon located?
David Langdon practices at 144 State St, Portland, ME 04101. The listed phone number is (207) 879-3000.
What is David Langdon's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.
Is David Langdon enrolled in Medicare?
Yes. David Langdon is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for David Langdon's services?
According to the CMS Revalidation Reassignment List (October 2026 release), David Langdon reassigns Medicare benefits to 7 organizations: Mercy Hospital (Portland, ME), Radiology Professionals, PA (Portland, ME), Radiology Consultants Of Maine, LLC (Brunswick, ME), New England Radiological Consortium, LLC (Hampton, NH), Franklin Imaging, PLLC (Farmington, ME) and 2 more organizations, listed in the Medicare section above. 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 David Langdon's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does David Langdon accept?
Health plans from WellSense Health Plan list David Langdon 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 David Langdon affiliated with any hospitals?
According to CMS data, David Langdon is affiliated with St Joseph Hospital, Northern Light Health, Northern Light Eastern Maine Medical Center, Northern Light Maine Coast Hospital and Waldo County General Hospital.
When was this NPI record last updated?
The NPPES record for David Langdon was last updated on July 16, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.