DOUGLAS GEORGE NILSON MD
NPI 1609091503
Emergency Medicine in Biddeford, ME
About Douglas George Nilson Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DOUGLAS GEORGE NILSON MD (NPI 1609091503) is an individual emergency medicine provider in Biddeford, Maine, licensed in Maine (018117) and active in the NPI registry since April 2007. He is enrolled in Medicare PECOS, is affiliated with York Hospital, and is a graduate of Northwestern University Feinberg Medical School (2005).
NPPES Registry Identity
Specialties & Licenses
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
Douglas George Nilson 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
4Medicare enrollment records show Douglas Nilson reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Biddeford, ME 04005
- Reassigned Medicare billing, Maine enrollment
- Medicare enrollment name: Southern Maine Health Care
- 253 clinicians in this Medicare group
York, ME 03909
- Reassigned Medicare billing, Maine enrollment
- 347 clinicians in this Medicare group
Brunswick, ME 04011
- Reassigned Medicare billing, Maine, New Hampshire and Vermont enrollments
- 170 clinicians in this Medicare group
Machias, ME 04654
- Reassigned Medicare billing, Maine enrollment
- 120 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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
York Hospital
Acute Care Hospitals · York, MEPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 04005 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.
BIDDEFORD, ME 04005
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 Douglas Nilson's NPI number?
The NPI number for Douglas Nilson is 1609091503. It was assigned to this individual provider in the NPPES registry on April 16, 2007.
Where is Douglas Nilson located?
Douglas Nilson practices at 1 Medical Center Dr Emergency Department, Biddeford, ME 04005. The listed phone number is (207) 294-5000.
What is Douglas Nilson's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Douglas Nilson enrolled in Medicare?
Yes. Douglas Nilson 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 Douglas Nilson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Douglas Nilson reassigns Medicare benefits to 4 organizations: Mainehealth (Biddeford, ME), York Hospital (York, ME), Bluewater Emergency Partners Of Brunswick, LLC (Brunswick, ME) and Down East Community Hospital (Machias, ME). 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 Douglas Nilson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Douglas Nilson accept?
Health plans from Anthem Blue Cross and Blue Shield, Taro Health and WellSense Health Plan list Douglas Nilson 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 Douglas Nilson affiliated with any hospitals?
According to CMS data, Douglas Nilson is affiliated with York Hospital.
When was this NPI record last updated?
The NPPES record for Douglas Nilson was last updated on January 17, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.
# Douglas George Nilson, MD · NPI 1609091503
Emergency Medicine physician in Biddeford, Maine. Individual provider, active in the CMS NPPES registry since April 16, 2007.
## Identity
- **NPI:** 1609091503 (Entity type: Individual)
- **Enumerated:** April 16, 2007
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 018117 (Maine)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1 MEDICAL CENTER DR, EMERGENCY DEPARTMENT, Biddeford, ME 04005-9422
- **Phone:** (207) 294-5000
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Mainehealth (NPI 1659392819, Biddeford, ME); York Hospital (NPI 1376528398, York, ME); Bluewater Emergency Partners Of Brunswick, LLC (NPI 1043640204, Brunswick, ME); Down East Community Hospital (NPI 1689670242, Machias, ME) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Northwestern University Feinberg Medical School, class of 2005
## Record status
- **NPPES last updated:** January 17, 2012
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Source: [NPI Profile](https://npiprofile.com/npi/1609091503) · Data from the CMS NPPES public registry.