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MARYLYNN GRONOW
NPI 1740641497
Counselor - Professional in Waterford, MI

Active since March 09, 2016PECOS EnrolledAccepts Medicare Assignment
1435 N OAKLAND BLVD, WATERFORD, MI 48327(248) 406-0090 Get Directions Write a Review

NPPES record last updated: September 27, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Marylynn Gronow NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARYLYNN GRONOW (NPI 1740641497) is an individual professional provider in Waterford, Michigan, licensed in Michigan (6401014754) and active in the NPI registry since March 2016. She is enrolled in Medicare PECOS and is a graduate of Other (2014).

NPPES Registry Identity

NPI1740641497
Entity TypeIndividualFemale
Primary Taxonomy101YP2500X
Provider Legal NameMARYLYNN GRONOW
Location Address1435 N OAKLAND BLVDWaterford, MI 48327-1549
Mailing Address1435 N Oakland BlvdWaterford, MI 48327-1549 · (248) 406-0090
Phone(248) 406-0090
Sole ProprietorYes
Medical School CMSOtherGraduated 2014
Enumeration DateMarch 9, 2016
Last NPPES UpdateSeptember 27, 2025
NPPES CertifiedSeptember 27, 2025
✔ NPI 1740641497 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · ProfessionalBehavioral Health & Social Service Providers
Taxonomy Code101YP2500X
License✔ Licensed in MI · 6401014754
1435 N OAKLAND BLVD, Waterford, MI 48327
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter from Meridian, Ambetter Health and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Marylynn Gronow is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1759739246
PECOS Enrollment IDI20231121003766
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Marylynn Gronow reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Downriver Mental Health Clinic PC
4.7 mi
Mental Health (Including Community Mental Health Center)
7300 DIXIE HWY, SUITE 1000
Clarkston, MI 48346
  • Reassigned Medicare billing, Michigan enrollment
  • 451 clinicians in this Medicare group
NPI 1508994237 (248) 922-2300

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MISS JESSICA BROOKE PORTER B.S, FAODP
Counselor (Addiction (Substance Use Disorder))
1435 N OAKLAND BLVD
WATERFORD, MI 48327
Oakland County (248) 666-2720
MR. JIMMIE LEE LESTER AAS, CAC1
Counselor (Addiction (Substance Use Disorder))
1435 N OAKLAND BLVD
WATERFORD, MI 48327
Oakland County (248) 406-0090
CHEYENNA WILLIAMS
Counselor (Addiction (Substance Use Disorder))
1435 N OAKLAND BLVD
WATERFORD, MI 48327
Oakland County (248) 599-8999
COURTNEY LYON
Social Worker (Clinical)
1435 N OAKLAND BLVD
WATERFORD, MI 48327
Oakland County (248) 599-8999
MR. JAMES EDWARD BEALL MA,LLPC,NCC,AODA
Counselor (Addiction (Substance Use Disorder))
1435 N OAKLAND BLVD
WATERFORD, MI 48327
Oakland County (248) 406-0090
MR. BOBBY JOE GIBBS BA,, FADOP
Counselor (Addiction (Substance Use Disorder))
1435 N OAKLAND BLVD
WATERFORD, MI 48327
Oakland County (248) 666-2720
OLINDA PATRICIA PERRY
Technician/Technologist
1435 N OAKLAND BLVD
WATERFORD, MI 48327
Oakland County (248) 599-8999
MR. SHAWN DANIEL MILLER M.A.
Counselor (Professional)
1435 N OAKLAND BLVD
WATERFORD, MI 48327
Oakland County (248) 406-0090

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Marylynn Gronow's NPI number?

The NPI number for Marylynn Gronow is 1740641497. It was assigned to this individual provider in the NPPES registry on March 9, 2016.

Where is Marylynn Gronow located?

Marylynn Gronow practices at 1435 N Oakland Blvd, Waterford, MI 48327. The listed phone number is (248) 406-0090.

What is Marylynn Gronow's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Professional, with taxonomy code 101YP2500X.

Is Marylynn Gronow enrolled in Medicare?

Yes. Marylynn Gronow is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Marylynn Gronow's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Marylynn Gronow reassigns Medicare benefits to Downriver Mental Health Clinic PC (Clarkston, MI). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Marylynn Gronow's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Marylynn Gronow accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Blue Care Network of Michigan and Blue Cross Blue Shield of Michigan Mutual Insurance Company and 2 other insurers list Marylynn Gronow as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Marylynn Gronow was last updated on September 27, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.