DR. RYAN KEITH NELSON M.D.
NPI 1851633143
Internal Medicine - Pulmonary Disease in Bend, OR
About Dr. Ryan Keith Nelson M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. RYAN KEITH NELSON M.D. (NPI 1851633143) is an individual pulmonary disease provider in Bend, Oregon, licensed in Oregon (MD192175) and active in the NPI registry since March 2013. He is enrolled in Medicare PECOS, is affiliated with St Charles Medical Center - Bend, and is a graduate of University Of Chicago, Pritzker School Of Medicine (2013).
NPPES Registry Identity
Specialties & Licenses 2
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
Dr. Ryan Keith Nelson 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
4Medicare enrollment records show Ryan Nelson reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Bend, OR 97701
- Reassigned Medicare billing, Oregon enrollment
- 348 clinicians in this Medicare group
Bend, OR 97701
- Reassigned Medicare billing, Oregon enrollment
- 307 clinicians in this Medicare group
San Diego, CA 92123
- Reassigned Medicare billing, California enrollment
- 50 clinicians in this Medicare group
San Diego, CA 92123
- Reassigned Medicare billing, California enrollment
- 1,437 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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
St Charles Medical Center - Bend
Acute Care Hospitals · Bend, ORBlue Mountain Hospital
Critical Access Hospitals · John Day, ORSt Charles Medical Center Prineville
Critical Access Hospitals · Prineville, ORPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 97701 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 2
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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 Ryan Nelson's NPI number?
The NPI number for Ryan Nelson is 1851633143. It was assigned to this individual provider in the NPPES registry on March 25, 2013.
Where is Ryan Nelson located?
Ryan Nelson practices at 2500 NE Neff Rd, Bend, OR 97701. The listed phone number is (541) 382-4321.
What is Ryan Nelson's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.
Is Ryan Nelson enrolled in Medicare?
Yes. Ryan Nelson 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 Ryan Nelson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ryan Nelson reassigns Medicare benefits to 4 organizations: St. Charles Health System, Inc. (Bend, OR), St. Charles Health System, Inc. (Bend, OR), Chest Medicine And Critical Care Medical Group, Inc. (San Diego, CA) and Emergency And Acute Care Medical Corporation (San Diego, CA). 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 Ryan Nelson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ryan Nelson accept?
Health plans from Moda Health Plan, Inc., PacificSource Health Plans and Providence Health Plan list Ryan Nelson 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 Ryan Nelson affiliated with any hospitals?
According to CMS data, Ryan Nelson is affiliated with St Charles Medical Center - Bend, Blue Mountain Hospital and St Charles Medical Center Prineville.
When was this NPI record last updated?
The NPPES record for Ryan Nelson was last updated on June 1, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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. Ryan Keith Nelson, M.D. · NPI 1851633143
Pulmonary Disease physician in Bend, Oregon. Individual provider, active in the CMS NPPES registry since March 25, 2013.
## Identity
- **NPI:** 1851633143 (Entity type: Individual)
- **Enumerated:** March 25, 2013
- **Primary specialty:** Internal Medicine - Pulmonary Disease · taxonomy 207RP1001X
- **State license:** MD192175 (Oregon)
- **Sole proprietor:** No
## Practice location
- **Address:** 2500 NE NEFF RD, Bend, OR 97701-6015
- **Phone:** (541) 382-4321
## 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): St. Charles Health System, Inc. (NPI 1023331303, Bend, OR); St. Charles Health System, Inc. (NPI 1154343150, Bend, OR); Chest Medicine And Critical Care Medical Group, Inc. (NPI 1841292521, San Diego, CA); Emergency And Acute Care Medical Corporation (NPI 1437103942, San Diego, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Chicago, Pritzker School Of Medicine, class of 2013
## Record status
- **NPPES last updated:** June 1, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1851633143) · Data from the CMS NPPES public registry.