DEREK CONNER WESTMAN DO
NPI 1982283065
Internal Medicine in Saint Joseph, MI
About Derek Conner Westman Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DEREK CONNER WESTMAN DO (NPI 1982283065) is an individual internal medicine provider in Saint Joseph, Michigan, licensed in Michigan (5101027971) and active in the NPI registry since April 2021. He is enrolled in Medicare PECOS, is affiliated with Lakeland Hospital, St Joseph, and maintains a secondary practice location in Niles.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
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
Derek Conner Westman Do 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 Reassignment
Medicare enrollment records show Derek Westman reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Saint Joseph, MI 49085
- Reassigned Medicare billing, Michigan enrollment
- 724 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 3
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.
Lakeland Hospital, St Joseph
Acute Care Hospitals · St Joseph, MIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 49085 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.
SAINT JOSEPH, MI 49085
SAINT JOSEPH, MI 49085
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 Derek Westman's NPI number?
The NPI number for Derek Westman is 1982283065. It was assigned to this individual provider in the NPPES registry on April 6, 2021.
Where is Derek Westman located?
Derek Westman practices at 1234 Napier Ave, Saint Joseph, MI 49085. The listed phone number is (269) 982-4941.
What is Derek Westman's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Derek Westman enrolled in Medicare?
Yes. Derek Westman 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 Derek Westman's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Derek Westman reassigns Medicare benefits to Lakeland Medical Practices (Saint Joseph, 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 Derek Westman's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Derek Westman accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Blue Cross Blue Shield of Michigan Mutual Insurance Company and Priority Health list Derek Westman 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 Derek Westman affiliated with any hospitals?
According to CMS data, Derek Westman is affiliated with Lakeland Hospital, St Joseph.
When was this NPI record last updated?
The NPPES record for Derek Westman was last updated on August 2, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Derek Conner Westman, DO · NPI 1982283065
Internal Medicine physician in Saint Joseph, Michigan. Individual provider, active in the CMS NPPES registry since April 6, 2021.
## Identity
- **NPI:** 1982283065 (Entity type: Individual)
- **Enumerated:** April 6, 2021
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 5101027971 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 1234 NAPIER AVE, Saint Joseph, MI 49085-2112
- **Phone:** (269) 982-4941
## 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:** Lakeland Medical Practices (NPI 1538397120, Saint Joseph, MI), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2021
## Record status
- **NPPES last updated:** August 2, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1982283065) · Data from the CMS NPPES public registry.