DR. NATALIE BONTHIUS MD
NPI 1891424388
Emergency Medicine in Temecula, CA
About Dr. Natalie Bonthius Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. NATALIE BONTHIUS MD (NPI 1891424388) is an individual emergency medicine provider in Temecula, California, licensed in Washington (MD70112068) and active in the NPI registry since June 2022. She is enrolled in Medicare PECOS, is affiliated with Mary Hitchcock Memorial Hospital, and maintains 3 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 3
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. Natalie Bonthius 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
8Medicare enrollment records show Natalie Bonthius reassigns Medicare billing to 8 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Chino, CA 91710
- Reassigned Medicare billing, California enrollment
- 99 clinicians in this Medicare group
Chelan, WA 98816
- Reassigned Medicare billing, Washington enrollment
- Also billed through NPI 1578568853 (Washington)
- 154 clinicians in this Medicare group
Arlington, WA 98223
- Reassigned Medicare billing, Washington enrollment
- 519 clinicians in this Medicare group
Ketchikan, AK 99901
- Reassigned Medicare billing, Alaska enrollment
- 26 clinicians in this Medicare group
Claremont, NH 03743
- Reassigned Medicare billing, New Hampshire enrollment
- 2,999 clinicians in this Medicare group
Lebanon, NH 03756
- Reassigned Medicare billing, New Hampshire enrollment
- 2,620 clinicians in this Medicare group
Lebanon, NH 03766
- Reassigned Medicare billing, New Hampshire enrollment
- Also billed through NPI 1073569810 (New Hampshire)
- 283 clinicians in this Medicare group
Newport, NH 03773
- Reassigned Medicare billing, New Hampshire enrollment
- Also billed through NPI 1639610611 (New Hampshire)
- 219 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
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 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mary Hitchcock Memorial Hospital
Acute Care Hospitals · Lebanon, NHNew London Hospital
Critical Access Hospitals · New London, NHIsland Hospital
Acute Care Hospitals · Anacortes, WALake Chelan Community Hospital
Critical Access Hospitals · Chelan, WAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92592 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 Natalie Bonthius's NPI number?
The NPI number for Natalie Bonthius is 1891424388. It was assigned to this individual provider in the NPPES registry on June 9, 2022.
Where is Natalie Bonthius located?
Natalie Bonthius practices at Uhs Socal Mec 31700 Temecula Parkway Parkway Suites # 1- Gme, Temecula, CA 92592. The listed phone number is (951) 331-2535.
What is Natalie Bonthius's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Natalie Bonthius enrolled in Medicare?
Yes. Natalie Bonthius 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 Natalie Bonthius's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Natalie Bonthius reassigns Medicare benefits to 8 organizations: Chino Emergency Medical Associates, Inc. (Chino, CA), Chelan County Public Hospital District No 2 (Chelan, WA), Northwest Emergency Physicians LLC (Arlington, WA), Ketchikan Emergency Physicians, LLC (Ketchikan, AK), Dartmouth-Hitchcock Clinic (Claremont, NH) and 3 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 Natalie Bonthius's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Natalie Bonthius accept?
Health plans from Moda Health Plan, Inc. and Taro Health list Natalie Bonthius 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 Natalie Bonthius affiliated with any hospitals?
According to CMS data, Natalie Bonthius is affiliated with Mary Hitchcock Memorial Hospital, New London Hospital, Island Hospital and Lake Chelan Community Hospital.
When was this NPI record last updated?
The NPPES record for Natalie Bonthius was last updated on July 8, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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. Natalie Bonthius, MD · NPI 1891424388
Emergency Medicine physician in Temecula, California. Individual provider, active in the CMS NPPES registry since June 9, 2022.
## Identity
- **NPI:** 1891424388 (Entity type: Individual)
- **Enumerated:** June 9, 2022
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** MD70112068 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** UHS SOCAL MEC 31700 TEMECULA PARKWAY, PARKWAY SUITES # 1- GME, Temecula, CA 92592
- **Phone:** (951) 331-2535
## 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:** 8 organizations under Medicare reassignment (form CMS-855R): Chino Emergency Medical Associates, Inc. (NPI 1013282029, Chino, CA); Chelan County Public Hospital District No 2 (NPI 1124438312, Chelan, WA); Northwest Emergency Physicians LLC (NPI 1235172370, Arlington, WA); Ketchikan Emergency Physicians, LLC (NPI 1801690854, Ketchikan, AK); Dartmouth-Hitchcock Clinic (NPI 1891648952, Claremont, NH); and 3 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2021
## Record status
- **NPPES last updated:** July 8, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1891424388) · Data from the CMS NPPES public registry.