KAREN WEAVER MD
NPI 1265412456
Family Medicine in Westland, MI
About Karen Weaver Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KAREN WEAVER MD (NPI 1265412456) is an individual family medicine provider in Westland, Michigan, licensed in Michigan (4301083883) and active in the NPI registry since January 2006. She is enrolled in Medicare PECOS, is affiliated with Beaumont Hospital - Dearborn, and is a graduate of University Of Michigan Medical School (1993).
NPPES Registry Identity
Specialties & Licenses
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
Karen Weaver Md 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
2Medicare enrollment records show Karen Weaver reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Westland, MI 48186
- Reassigned Medicare billing, Michigan enrollment
- 453 clinicians in this Medicare group
Wayne, MI 48184
- Reassigned Medicare billing, Michigan enrollment
- 32 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 2
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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Beaumont Hospital - Dearborn
Acute Care Hospitals · Dearborn, MIBeaumont Hospital Royal Oak
Acute Care Hospitals · Royal Oak, MICorewell Health Wayne Hospital
Acute Care Hospitals · Wayne, MIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 48186 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.
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 Karen Weaver's NPI number?
The NPI number for Karen Weaver is 1265412456. It was assigned to this individual provider in the NPPES registry on January 23, 2006.
Where is Karen Weaver located?
Karen Weaver practices at 2001 S Merriman Rd Suite 100, Westland, MI 48186. The listed phone number is (734) 727-1000.
What is Karen Weaver's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Karen Weaver enrolled in Medicare?
Yes. Karen Weaver 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 Karen Weaver's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Karen Weaver reassigns Medicare benefits to 2 organizations: Oakwood Ambulatory, LLC (Westland, MI) and Oakwood Healthcare, Inc. (Wayne, MI). 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 Karen Weaver's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Karen Weaver 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 Karen Weaver 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 Karen Weaver affiliated with any hospitals?
According to CMS data, Karen Weaver is affiliated with Beaumont Hospital - Dearborn, Beaumont Hospital Royal Oak and Corewell Health Wayne Hospital.
When was this NPI record last updated?
The NPPES record for Karen Weaver was last updated on October 22, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Karen Weaver, MD · NPI 1265412456
Family Medicine physician in Westland, Michigan. Individual provider, active in the CMS NPPES registry since January 23, 2006.
## Identity
- **NPI:** 1265412456 (Entity type: Individual)
- **Enumerated:** January 23, 2006
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 4301083883 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 2001 S MERRIMAN RD, SUITE 100, Westland, MI 48186-5539
- **Phone:** (734) 727-1000
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Oakwood Ambulatory, LLC (NPI 1013157361, Westland, MI); Oakwood Healthcare, Inc. (NPI 1225042963, Wayne, MI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Michigan Medical School, class of 1993
## Record status
- **NPPES last updated:** October 22, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1265412456) · Data from the CMS NPPES public registry.