AMBER LYNN HOLTZ MD
NPI 1912571332
Pathology - Anatomic Pathology & Clinical Pathology in Midland, MI
About Amber Lynn Holtz Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
AMBER LYNN HOLTZ MD (NPI 1912571332) is an individual anatomic pathology & clinical pathology provider in Midland, Michigan, licensed in Michigan (4301513376) and active in the NPI registry since May 2021. She is enrolled in Medicare PECOS, is affiliated with University Of Michigan Health System, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
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
Amber Lynn Holtz 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 Amber Holtz reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Midland, MI 48670
- Reassigned Medicare billing, Michigan enrollment
- 4 clinicians in this Medicare group
Ann Arbor, MI 48109
- Reassigned Medicare billing, Michigan enrollment
- 133 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
University Of Michigan Health System
Acute Care Hospitals · Ann Arbor, MIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 48670 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.
MIDLAND, MI 48670
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 Amber Holtz's NPI number?
The NPI number for Amber Holtz is 1912571332. It was assigned to this individual provider in the NPPES registry on May 19, 2021.
Where is Amber Holtz located?
Amber Holtz practices at 4000 Wellness Dr, Midland, MI 48670. The listed phone number is (800) 288-8325.
What is Amber Holtz's specialty?
The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.
Is Amber Holtz enrolled in Medicare?
Yes. Amber Holtz 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 Amber Holtz's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Amber Holtz reassigns Medicare benefits to 2 organizations: Midland Pathology Associates, PC (Midland, MI) and Regents Of The University Of Michigan (Ann Arbor, 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 Amber Holtz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Amber Holtz accept?
Health plans from Blue Care Network of Michigan and Blue Cross Blue Shield of Michigan Mutual Insurance Company list Amber Holtz 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 Amber Holtz affiliated with any hospitals?
According to CMS data, Amber Holtz is affiliated with University Of Michigan Health System.
When was this NPI record last updated?
The NPPES record for Amber Holtz was last updated on August 25, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Amber Lynn Holtz, MD · NPI 1912571332
Anatomic Pathology & Clinical Pathology physician in Midland, Michigan. Individual provider, active in the CMS NPPES registry since May 19, 2021.
## Identity
- **NPI:** 1912571332 (Entity type: Individual)
- **Enumerated:** May 19, 2021
- **Primary specialty:** Pathology - Anatomic Pathology & Clinical Pathology · taxonomy 207ZP0102X
- **State license:** 4301513376 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 4000 WELLNESS DR, Midland, MI 48670-2000
- **Phone:** (800) 288-8325
## 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): Midland Pathology Associates, PC (NPI 1487747473, Midland, MI); Regents Of The University Of Michigan (NPI 1508890468, Ann Arbor, MI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Wayne State University School Of Medicine, class of 2021
## Record status
- **NPPES last updated:** August 25, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1912571332) · Data from the CMS NPPES public registry.