DR. NICHOLAS ALLEN HAMILTON M.D.
NPI 1811013840
Surgery - Pediatric Surgery in Portland, OR
About Dr. Nicholas Allen Hamilton M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. NICHOLAS ALLEN HAMILTON M.D. (NPI 1811013840) is an individual pediatric surgery provider in Portland, Oregon, licensed in Oregon (MD171728) and active in the NPI registry since March 2007. He is enrolled in Medicare PECOS and maintains a secondary practice location in Kalispell.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 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)
Dr. Nicholas Allen Hamilton M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Nicholas Hamilton reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Springfield, OR 97477
- Reassigned Medicare billing, Oregon enrollment
- 412 clinicians in this Medicare group
Springfield, OR 97477
- Reassigned Medicare billing, Oregon enrollment
- 278 clinicians in this Medicare group
Missoula, MT 59804
- Reassigned Medicare billing, Montana enrollment
- 192 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.
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.
PORTLAND, OR 97239
PORTLAND, OR 97239
PORTLAND, OR 97239
PORTLAND, OR 97239
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 Nicholas Hamilton's NPI number?
The NPI number for Nicholas Hamilton is 1811013840. It was assigned to this individual provider in the NPPES registry on March 21, 2007.
Where is Nicholas Hamilton located?
Nicholas Hamilton practices at 3181 SW Sam Jackson Park Rd, Portland, OR 97239. The listed phone number is (503) 494-8708.
What is Nicholas Hamilton's specialty?
The primary specialty registered for this NPI is Surgery, specializing in Pediatric Surgery, with taxonomy code 2086S0120X.
Is Nicholas Hamilton enrolled in Medicare?
Yes. Nicholas Hamilton is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Nicholas Hamilton's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nicholas Hamilton reassigns Medicare benefits to 3 organizations: Peacehealth Medical Group (Springfield, OR), Peacehealth (Springfield, OR) and Rchp Billings - Missoula LLC (Missoula, MT). 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 Nicholas Hamilton's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Nicholas Hamilton accept?
Health plans from Blue Cross and Blue Shield of Montana, Mountain Health CO-OP, PacificSource Health Plans and Providence Health Plan list Nicholas Hamilton 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.
When was this NPI record last updated?
The NPPES record for Nicholas Hamilton was last updated on April 18, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# Dr. Nicholas Allen Hamilton, M.D. · NPI 1811013840
Pediatric Surgery physician in Portland, Oregon. Individual provider, active in the CMS NPPES registry since March 21, 2007.
## Identity
- **NPI:** 1811013840 (Entity type: Individual)
- **Enumerated:** March 21, 2007
- **Primary specialty:** Surgery - Pediatric Surgery · taxonomy 2086S0120X
- **State license:** MD171728 (Oregon)
- **Sole proprietor:** No
## Practice location
- **Address:** 3181 SW SAM JACKSON PARK RD, Portland, OR 97239-3011
- **Phone:** (503) 494-8708
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Peacehealth Medical Group (NPI 1881860856, Springfield, OR); Peacehealth (NPI 1740223874, Springfield, OR); Rchp Billings - Missoula LLC (NPI 1376946913, Missoula, MT) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** April 18, 2025
---
Source: [NPI Profile](https://npiprofile.com/npi/1811013840) · Data from the CMS NPPES public registry.