DRU MAHON DOUGLAS CLAAR MD
NPI 1427314434
Internal Medicine - Pulmonary Disease in Ann Arbor, MI
About Dru Mahon Douglas Claar Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DRU MAHON DOUGLAS CLAAR MD (NPI 1427314434) is an individual pulmonary disease provider in Ann Arbor, Michigan, licensed in Michigan (4301106939) and active in the NPI registry since April 2012. He is enrolled in Medicare PECOS, is affiliated with University Of Michigan Health System, and is a graduate of Medical College Of Wisconsin (2012).
NPPES Registry Identity
Specialties & Licenses 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
Dru Mahon Douglas Claar 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 Dru Claar reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Ann Arbor, MI 48109
- Reassigned Medicare billing, Michigan enrollment
- 2,377 clinicians in this Medicare group
Ann Arbor, MI 48105
- Reassigned Medicare billing, Michigan enrollment
- 124 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.
University Of Michigan Health System
Acute Care Hospitals · Ann Arbor, MIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 48109 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.
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
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 Dru Claar's NPI number?
The NPI number for Dru Claar is 1427314434. It was assigned to this individual provider in the NPPES registry on April 3, 2012.
Where is Dru Claar located?
Dru Claar practices at 1500 East Medical Center Dr 3rd Floor Taubman Center Recp C, Ann Arbor, MI 48109. The listed phone number is (734) 647-9342.
What is Dru Claar's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.
Is Dru Claar enrolled in Medicare?
Yes. Dru Claar 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 Dru Claar's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Dru Claar reassigns Medicare benefits to 2 organizations: Regents Of The University Of Michigan (Ann Arbor, MI) and St Mary Mercy Hospital Professional (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 Dru Claar's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Dru Claar 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 Dru Claar 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 Dru Claar affiliated with any hospitals?
According to CMS data, Dru Claar is affiliated with University Of Michigan Health System.
When was this NPI record last updated?
The NPPES record for Dru Claar was last updated on December 7, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Dru Mahon Douglas Claar, MD · NPI 1427314434
Pulmonary Disease physician in Ann Arbor, Michigan. Individual provider, active in the CMS NPPES registry since April 3, 2012.
## Identity
- **NPI:** 1427314434 (Entity type: Individual)
- **Enumerated:** April 3, 2012
- **Primary specialty:** Internal Medicine - Pulmonary Disease · taxonomy 207RP1001X
- **State license:** 4301106939 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 1500 EAST MEDICAL CENTER DR, 3RD FLOOR TAUBMAN CENTER RECP C, Ann Arbor, MI 48109-5360
- **Phone:** (734) 647-9342
## 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): Regents Of The University Of Michigan (NPI 1003848144, Ann Arbor, MI); St Mary Mercy Hospital Professional (NPI 1386913705, Ann Arbor, MI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Medical College Of Wisconsin, class of 2012
## Record status
- **NPPES last updated:** December 7, 2018
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Source: [NPI Profile](https://npiprofile.com/npi/1427314434) · Data from the CMS NPPES public registry.