John Xanthopoulos, M.D.
NPI 1306948971 · Internal Medicine Physician · North Chicago, IL
John Xanthopoulos, M.D. is a Internal Medicine Physician provider in North Chicago, IL (NPI 1306948971).
Provider details
- NPI number
- 1306948971
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
83% 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
Mailing address
Registry dates
- Enumerated
- 2006-09-02
- Last updated
- 2007-07-08
Frequently asked questions
- What is John Xanthopoulos's NPI number?
- John Xanthopoulos's National Provider Identifier (NPI) is 1306948971, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Xanthopoulos's specialty?
- John Xanthopoulos is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Xanthopoulos located?
- John Xanthopoulos's practice location on file with NPPES is 3001 Green Bay Rd, North Chicago, IL 60064-3048.
- What is John Xanthopoulos's phone number?
- The practice phone number listed in the NPPES registry for John Xanthopoulos is (847) 688-1900.
- Is John Xanthopoulos's NPI active?
- Yes — John Xanthopoulos's NPI (1306948971) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.