Carol Kotzan, M.D.
NPI 1710950100 · Internal Medicine Physician · Crystal Lake, IL
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Carol Kotzan, M.D. is a Internal Medicine Physician provider in Crystal Lake, IL (NPI 1710950100).
Provider details
- NPI number
- 1710950100
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 036076689 (IL)
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
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 360 Station DriveSuite 201Crystal Lake, IL 60014-7978Phone: (815) 455-7200Fax: (815) 455-9256
Registry dates
- Enumerated
- 2006-02-08
- Last updated
- 2020-02-14
- Certified
- 2020-02-14
Frequently asked questions
- What is Carol Kotzan's NPI number?
- Carol Kotzan's National Provider Identifier (NPI) is 1710950100, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Carol Kotzan's specialty?
- Carol Kotzan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Carol Kotzan located?
- Carol Kotzan's practice location on file with NPPES is 525 E Congress Parkway Suite 250, Crystal Lake, IL 60014-6258.
- What is Carol Kotzan's phone number?
- The practice phone number listed in the NPPES registry for Carol Kotzan is (815) 455-7200.
- Does Carol Kotzan accept Medicare?
- Carol Kotzan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Carol Kotzan's NPI active?
- Yes — Carol Kotzan's NPI (1710950100) is active in the NPPES registry as of the last update on 2020-02-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.