What is Nathaniel Westphal's NPI number?

Nathaniel Westphal's National Provider Identifier (NPI) is 1003341496, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Nathaniel Westphal's specialty?

Nathaniel Westphal is listed in the NPPES registry with a primary specialty of Critical Care Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).

Where is Nathaniel Westphal located?

Nathaniel Westphal's practice location on file with NPPES is 2142 N Cove Boulevard, Toledo, OH 43604.

What is Nathaniel Westphal's phone number?

The practice phone number listed in the NPPES registry for Nathaniel Westphal is (419) 291-1111.

Does Nathaniel Westphal accept Medicare?

Nathaniel Westphal is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Nathaniel Westphal's NPI active?

Yes — Nathaniel Westphal's NPI (1003341496) is active in the NPPES registry as of the last update on 2023-11-03.

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Nathaniel Westphal, M.D.

NPI 1003341496 · Critical Care Medicine (Internal Medicine) Physician · Toledo, OH

Nathaniel Westphal, M.D. is a Critical Care Medicine (Internal Medicine) Physician provider in Toledo, OH (NPI 1003341496).

Provider details

NPI number: 1003341496
Entity type: Individual
Primary specialty: Critical Care Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
Credential: M.D.
Sex: Male
Sole proprietor: No
License: 227190 (NC)

Practice location

2142 N Cove Boulevard

Department of Anesthesia Toledo Critical Care

Toledo, OH 43604

Phone: (419) 291-1111

Fax: (419) 479-3253

Street-level locationGet directions

More OH providers

Mailing address

333 N Summit St Fl 7

Toledo, OH 43604-1531

Specialties & taxonomies

Critical Care Medicine (Internal Medicine) PhysicianPrimary207RC0200XLicense 35.145725 (OH)
Allopathic & Osteopathic Physicians
Emergency Medicine Physician207P00000XLicense 227190 (NC)
Allopathic & Osteopathic Physicians
Student in an Organized Health Care Education/Training Program390200000X
Student, Health Care

Enrolled with Medicare as Practitioner - Critical Care (intensivists) · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Established profile(54/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure28% of score
9 yrs in NPPES registry
Profile completeness28% of score
100% of core fields populated
Practice footprint17% of score
1 documented practice location
Medicare service volume (vs. specialty peers)28% of score
105 Medicare services, 2024 (ranked within specialty)

Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Critical Care, First 30-74 Minutes99291	73	$203
Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232	32	$75

Typical Medicare-allowed amounts for these services range $75–$203 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.

Enumerated: 2017-04-24
Last updated: 2023-11-03
Certified: 2022-07-11

Frequently asked questions

What is Nathaniel Westphal's NPI number?: Nathaniel Westphal's National Provider Identifier (NPI) is 1003341496, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Nathaniel Westphal's specialty?: Nathaniel Westphal is listed in the NPPES registry with a primary specialty of Critical Care Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
Where is Nathaniel Westphal located?: Nathaniel Westphal's practice location on file with NPPES is 2142 N Cove Boulevard, Toledo, OH 43604.
What is Nathaniel Westphal's phone number?: The practice phone number listed in the NPPES registry for Nathaniel Westphal is (419) 291-1111.
Does Nathaniel Westphal accept Medicare?: Nathaniel Westphal is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Nathaniel Westphal's NPI active?: Yes — Nathaniel Westphal's NPI (1003341496) is active in the NPPES registry as of the last update on 2023-11-03.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

What this provider does (Medicare)

Registry dates

Frequently asked questions

Specialties & taxonomies

Frequently asked questions

Profile Score

What this provider does (Medicare)