What is John Charles's NPI number?

John Charles's National Provider Identifier (NPI) is 1104801877, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is John Charles's specialty?

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

Where is John Charles located?

John Charles's practice location on file with NPPES is 2643 Libal St Ste C, Green Bay, WI 54301-2885.

What is John Charles's phone number?

The practice phone number listed in the NPPES registry for John Charles is (920) 664-6707.

Is John Charles's NPI active?

Yes — John Charles's NPI (1104801877) is active in the NPPES registry as of the last update on 2026-04-20.

IndividualActive

John Charles, MD

NPI 1104801877 · Psychiatry Physician · Green Bay, WI

John Charles, MD is a Psychiatry Physician provider in Green Bay, WI (NPI 1104801877).

Provider details

NPI number: 1104801877
Entity type: Individual
Primary specialty: Psychiatry PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
Sole proprietor: Yes
License: 42023 (WI)

Specialties & taxonomies

Psychiatry PhysicianPrimary2084P0800XLicense 42023 (WI)
Allopathic & Osteopathic Physicians

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.

Practice location

2643 Libal St Ste C

Green Bay, WI 54301-2885

Phone: (920) 664-6707

Street-level locationGet directions

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Mailing address