Mark Greenholt, LPC
NPI 1831913649 · Professional Counselor · Westmont, IL
Enrolled with Medicare as Practitioner - Mental Health Counselor · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Greenholt, LPC is a Professional Counselor provider in Westmont, IL (NPI 1831913649).
Provider details
- NPI number
- 1831913649
- Entity type
- Individual
- Primary specialty
- Professional CounselorBehavioral Health & Social Service Providers
- Credential
- LPC
- Sex
- Male
- Sole proprietor
- No
- License
- 178.019195 (IL)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
1 yr 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
Mailing address
Registry dates
- Enumerated
- 2024-11-09
- Last updated
- 2024-11-09
- Certified
- 2024-11-09
Frequently asked questions
- What is Mark Greenholt's NPI number?
- Mark Greenholt's National Provider Identifier (NPI) is 1831913649, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Greenholt's specialty?
- Mark Greenholt is listed in the NPPES registry with a primary specialty of Professional Counselor (Behavioral Health & Social Service Providers).
- Where is Mark Greenholt located?
- Mark Greenholt's practice location on file with NPPES is 414 Plaza Dr Ste 301, Westmont, IL 60559-5508.
- What is Mark Greenholt's phone number?
- The practice phone number listed in the NPPES registry for Mark Greenholt is (630) 728-1744.
- Does Mark Greenholt accept Medicare?
- Mark Greenholt is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Greenholt's NPI active?
- Yes — Mark Greenholt's NPI (1831913649) is active in the NPPES registry as of the last update on 2024-11-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.