What is John Willis's NPI number?

John Willis's National Provider Identifier (NPI) is 1215958012, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is John Willis's specialty?

John Willis is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).

Where is John Willis located?

John Willis's practice location on file with NPPES is 29 Nw 1st Ln, Lamar, MO 64759-8105.

What is John Willis's phone number?

The practice phone number listed in the NPPES registry for John Willis is (417) 681-5100.

Does John Willis accept Medicare?

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

Is John Willis's NPI active?

Yes — John Willis's NPI (1215958012) is active in the NPPES registry as of the last update on 2018-05-10.

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John Willis, MD

NPI 1215958012 · Emergency Medicine Physician · Lamar, MO

John Willis, MD is a Emergency Medicine Physician provider in Lamar, MO (NPI 1215958012).

Provider details

NPI number: 1215958012
Entity type: Individual
Primary specialty: Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
Sole proprietor: No
License: 2006005527 (MO)

Practice location

29 Nw 1st Ln

Lamar, MO 64759-8105

Phone: (417) 681-5100

Fax: (417) 681-5510

Street-level locationGet directions

More MO providers

Mailing address

29 Nw 1st Ln

Lamar, MO 64759-8105

Specialties & taxonomies

Emergency Medicine PhysicianPrimary207P00000XLicense 2006005527 (MO)
Allopathic & Osteopathic Physicians

Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Detailed profile(91/100 index)

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

Registry tenure38% of score
20 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

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.

Enumerated: 2006-07-21
Last updated: 2018-05-10

Frequently asked questions

What is John Willis's NPI number?: John Willis's National Provider Identifier (NPI) is 1215958012, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is John Willis's specialty?: John Willis is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
Where is John Willis located?: John Willis's practice location on file with NPPES is 29 Nw 1st Ln, Lamar, MO 64759-8105.
What is John Willis's phone number?: The practice phone number listed in the NPPES registry for John Willis is (417) 681-5100.
Does John Willis accept Medicare?: John Willis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is John Willis's NPI active?: Yes — John Willis's NPI (1215958012) is active in the NPPES registry as of the last update on 2018-05-10.

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

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

Frequently asked questions