DIANE LACROIX NP
NPI 1336122399
Nurse Practitioner in Grand Blanc, MI
About Diane Lacroix Np NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DIANE LACROIX NP (NPI 1336122399) is an individual nurse practitioner in Grand Blanc, Michigan, licensed in Michigan (4704172544) and active in the NPI registry since November 2005. She is enrolled in Medicare PECOS, is affiliated with Ascension Genesys Hospital, and is a graduate of Other (2001).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 5
Accepted 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
Diane Lacroix Np 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.
Medicare Billing Reassignments
6Medicare enrollment records show Diane Lacroix reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Grand Blanc, MI 48439
- Reassigned Medicare billing, Michigan enrollment
- 41 clinicians in this Medicare group
Grand Blanc, MI 48439
- Reassigned Medicare billing, Michigan enrollment
- 43 clinicians in this Medicare group
Kalamazoo, MI 49048
- Reassigned Medicare billing, Michigan enrollment
- 596 clinicians in this Medicare group
Oceanside, CA 92056
- Reassigned Medicare billing, California enrollment
- 140 clinicians in this Medicare group
Mission Viejo, CA 92691
- Reassigned Medicare billing, California enrollment
- 86 clinicians in this Medicare group
Laguna Beach, CA 92651
- Reassigned Medicare billing, California enrollment
- 110 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Ascension Genesys Hospital
Acute Care Hospitals · Grand Blanc, MIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 48439 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
GRAND BLANC, MI 48439
GRAND BLANC, MI 48439
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 Diane Lacroix's NPI number?
The NPI number for Diane Lacroix is 1336122399. It was assigned to this individual provider in the NPPES registry on November 23, 2005.
Where is Diane Lacroix located?
Diane Lacroix practices at 1 Genesys Pkwy, Grand Blanc, MI 48439. The listed phone number is (810) 606-6137.
What is Diane Lacroix's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Diane Lacroix enrolled in Medicare?
Yes. Diane Lacroix 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 organizations bill Medicare for Diane Lacroix's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Diane Lacroix reassigns Medicare benefits to 6 organizations: Emergency Medicine Physicians Of Genesee County, PLLC (Grand Blanc, MI), Observation Medicine Group PLLC (Grand Blanc, MI), Sound Inpatient Physicians-Michigan, PLLC (Kalamazoo, MI), Team Physicians Of Southern California Medical Group, Inc. (Oceanside, CA), Mission Viejo Emergency Medical Associates (Mission Viejo, CA) and 1 more organization, listed in the Medicare section above. Each 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 Diane Lacroix's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Diane Lacroix 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 list Diane Lacroix 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.
Is Diane Lacroix affiliated with any hospitals?
According to CMS data, Diane Lacroix is affiliated with Ascension Genesys Hospital.
When was this NPI record last updated?
The NPPES record for Diane Lacroix was last updated on August 24, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years 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.
# Diane Lacroix, NP · NPI 1336122399
Nurse Practitioner physician in Grand Blanc, Michigan. Individual provider, active in the CMS NPPES registry since November 23, 2005.
## Identity
- **NPI:** 1336122399 (Entity type: Individual)
- **Enumerated:** November 23, 2005
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** 4704172544 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 1 GENESYS PKWY, Grand Blanc, MI 48439-8065
- **Phone:** (810) 606-6137
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 6 organizations under Medicare reassignment (form CMS-855R): Emergency Medicine Physicians Of Genesee County, PLLC (NPI 1275899171, Grand Blanc, MI); Observation Medicine Group PLLC (NPI 1194084111, Grand Blanc, MI); Sound Inpatient Physicians-Michigan, PLLC (NPI 1093967861, Kalamazoo, MI); Team Physicians Of Southern California Medical Group, Inc. (NPI 1225499015, Oceanside, CA); Mission Viejo Emergency Medical Associates (NPI 1073542916, Mission Viejo, CA); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2001
## Record status
- **NPPES last updated:** August 24, 2023
- **Other identifiers:** Medicaid 4653168 (MI); Medicaid 4653177 (MI); Other P00157330; and 2 more
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Source: [NPI Profile](https://npiprofile.com/npi/1336122399) · Data from the CMS NPPES public registry.