DR. NATHANIEL WESTPHAL M.D.
NPI 1003341496
Internal Medicine - Critical Care Medicine in Toledo, OH
About Dr. Nathaniel Westphal M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. NATHANIEL WESTPHAL M.D. (NPI 1003341496) is an individual critical care medicine provider in Toledo, Ohio, licensed in Ohio (35.145725) and active in the NPI registry since April 2017. He is enrolled in Medicare PECOS, is affiliated with Promedica Toledo Hospital, and is a graduate of Medical College Of Ohio (2017).
NPPES Registry Identity
Specialties & Licenses 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. Nathaniel Westphal 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 Reassignment
Medicare enrollment records show Nathaniel Westphal reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Toledo, OH 43604
- Reassigned Medicare billing, Ohio enrollment
- 1,072 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 2
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.
Promedica Toledo Hospital
Acute Care Hospitals · Toledo, OHPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 43604 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 Nathaniel Westphal's NPI number?
The NPI number for Nathaniel Westphal is 1003341496. It was assigned to this individual provider in the NPPES registry on April 24, 2017.
Where is Nathaniel Westphal located?
Nathaniel Westphal practices at 2142 N Cove Boulevard Department Of Anesthesia Toledo Critical Care, Toledo, OH 43604. The listed phone number is (419) 291-1111.
What is Nathaniel Westphal's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.
Is Nathaniel Westphal enrolled in Medicare?
Yes. Nathaniel Westphal 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 organization bills Medicare for Nathaniel Westphal's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nathaniel Westphal reassigns Medicare benefits to Promedica Central Physicians (Toledo, OH). The 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 Nathaniel Westphal's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Nathaniel Westphal accept?
Health plans from Anthem Blue Cross and Blue Shield, CareSource, Cigna Healthcare and Priority Health list Nathaniel Westphal 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 Nathaniel Westphal affiliated with any hospitals?
According to CMS data, Nathaniel Westphal is affiliated with Promedica Toledo Hospital.
When was this NPI record last updated?
The NPPES record for Nathaniel Westphal was last updated on November 3, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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. Nathaniel Westphal, M.D. · NPI 1003341496
Critical Care Medicine physician in Toledo, Ohio. Individual provider, active in the CMS NPPES registry since April 24, 2017.
## Identity
- **NPI:** 1003341496 (Entity type: Individual)
- **Enumerated:** April 24, 2017
- **Primary specialty:** Internal Medicine - Critical Care Medicine · taxonomy 207RC0200X
- **State license:** 35.145725 (Ohio)
- **Sole proprietor:** No
## Practice location
- **Address:** 2142 N COVE BOULEVARD, DEPARTMENT OF ANESTHESIA TOLEDO CRITICAL CARE, Toledo, OH 43604
- **Phone:** (419) 291-1111 · **Fax:** (419) 479-3253
## 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:** Promedica Central Physicians (NPI 1043270150, Toledo, OH), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Medical College Of Ohio, class of 2017
## Record status
- **NPPES last updated:** November 3, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1003341496) · Data from the CMS NPPES public registry.