What is Carl Johnson's NPI number?

Carl Johnson's National Provider Identifier (NPI) is 1275525701, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Carl Johnson's specialty?

Carl Johnson is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).

Where is Carl Johnson located?

Carl Johnson's practice location on file with NPPES is 500 Health Center Dr, Mattoon, IL 61938-9258.

What is Carl Johnson's phone number?

The practice phone number listed in the NPPES registry for Carl Johnson is (217) 258-4080.

Does Carl Johnson accept Medicare?

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

Is Carl Johnson's NPI active?

Yes — Carl Johnson's NPI (1275525701) is active in the NPPES registry as of the last update on 2015-01-27.

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Carl Johnson, M.D.

NPI 1275525701 · Internal Medicine Physician · Mattoon, IL

Carl Johnson, M.D. is a Internal Medicine Physician provider in Mattoon, IL (NPI 1275525701).

Provider details

NPI number: 1275525701
Entity type: Individual
Primary specialty: Internal Medicine PhysicianAllopathic & Osteopathic Physicians
Credential: M.D.
Sex: Male
Sole proprietor: Yes
License: 036057126 (IL)

Practice location

500 Health Center Dr

Suite 104

Mattoon, IL 61938-9258

Phone: (217) 258-4080

Fax: (217) 258-4084

Approximate (ZIP-level) locationGet directions

More IL providers

Mailing address

Po Box 372

Mattoon, IL 61938-0372

Specialties & taxonomies

Internal Medicine PhysicianPrimary207R00000XLicense 036057126 (IL)
Allopathic & Osteopathic Physicians

Enrolled with Medicare as Practitioner - Internal 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
21 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: 2005-08-19
Last updated: 2015-01-27

Frequently asked questions

What is Carl Johnson's NPI number?: Carl Johnson's National Provider Identifier (NPI) is 1275525701, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Carl Johnson's specialty?: Carl Johnson is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
Where is Carl Johnson located?: Carl Johnson's practice location on file with NPPES is 500 Health Center Dr, Mattoon, IL 61938-9258.
What is Carl Johnson's phone number?: The practice phone number listed in the NPPES registry for Carl Johnson is (217) 258-4080.
Does Carl Johnson accept Medicare?: Carl Johnson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Carl Johnson's NPI active?: Yes — Carl Johnson's NPI (1275525701) is active in the NPPES registry as of the last update on 2015-01-27.

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