Marylynn Gronow
NPI 1740641497 · Professional Counselor · Waterford, MI
Enrolled with Medicare as Practitioner - Mental Health Counselor · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marylynn Gronow is a Professional Counselor provider in Waterford, MI (NPI 1740641497).
Provider details
- NPI number
- 1740641497
- Entity type
- Individual
- Primary specialty
- Professional CounselorBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- Yes
- License
- 6401014754 (MI)
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
10 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
Mailing address
Registry dates
- Enumerated
- 2016-03-09
- Last updated
- 2025-09-27
- Certified
- 2025-09-27
Frequently asked questions
- What is Marylynn Gronow's NPI number?
- Marylynn Gronow's National Provider Identifier (NPI) is 1740641497, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marylynn Gronow's specialty?
- Marylynn Gronow is listed in the NPPES registry with a primary specialty of Professional Counselor (Behavioral Health & Social Service Providers).
- Where is Marylynn Gronow located?
- Marylynn Gronow's practice location on file with NPPES is 1435 N Oakland Blvd, Waterford, MI 48327-1549.
- What is Marylynn Gronow's phone number?
- The practice phone number listed in the NPPES registry for Marylynn Gronow is (248) 406-0090.
- Does Marylynn Gronow accept Medicare?
- Marylynn Gronow is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marylynn Gronow's NPI active?
- Yes — Marylynn Gronow's NPI (1740641497) is active in the NPPES registry as of the last update on 2025-09-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.