DAVID ALEXANDER DEEMER MD
NPI 1528646189
Internal Medicine - Geriatric Medicine in Madison, WI
About David Alexander Deemer Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DAVID ALEXANDER DEEMER MD (NPI 1528646189) is an individual geriatric medicine provider in Madison, Wisconsin, licensed in Wisconsin (81227) and active in the NPI registry since April 2021. He is enrolled in Medicare PECOS, is affiliated with University Of Wi Hospitals & Clinics Authority, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 4
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
David Alexander Deemer 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 Reassignment
Medicare enrollment records show David Deemer reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Middleton, WI 53562
- Reassigned Medicare billing, Wisconsin enrollment
- 2,832 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 Wi Hospitals & Clinics Authority
Acute Care Hospitals · Madison, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 53718 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.
MADISON, WI 53718
MADISON, WI 53718
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 David Deemer's NPI number?
The NPI number for David Deemer is 1528646189. It was assigned to this individual provider in the NPPES registry on April 1, 2021.
Where is David Deemer located?
David Deemer practices at 5249 E Terrace Dr, Madison, WI 53718. The listed phone number is (608) 265-1210.
What is David Deemer's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Geriatric Medicine, with taxonomy code 207RG0300X.
Is David Deemer enrolled in Medicare?
Yes. David Deemer 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 David Deemer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), David Deemer reassigns Medicare benefits to University Of Wisconsin Medical Foundation, Inc (Middleton, WI). 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 David Deemer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does David Deemer accept?
Health plans from Anthem Blue Cross and Blue Shield, Aspirus Health Plan, Group Health Cooperative-SCW, HealthPartners and Quartz list David Deemer 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 David Deemer affiliated with any hospitals?
According to CMS data, David Deemer is affiliated with University Of Wi Hospitals & Clinics Authority.
When was this NPI record last updated?
The NPPES record for David Deemer was last updated on July 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# David Alexander Deemer, MD · NPI 1528646189
Geriatric Medicine physician in Madison, Wisconsin. Individual provider, active in the CMS NPPES registry since April 1, 2021.
## Identity
- **NPI:** 1528646189 (Entity type: Individual)
- **Enumerated:** April 1, 2021
- **Primary specialty:** Internal Medicine - Geriatric Medicine · taxonomy 207RG0300X
- **State license:** 81227 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 5249 E TERRACE DR, Madison, WI 53718-8339
- **Phone:** (608) 265-1210
## 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:** University Of Wisconsin Medical Foundation, Inc (NPI 1598784555, Middleton, WI), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Loma Linda University School Of Medicine, class of 2021
## Record status
- **NPPES last updated:** July 23, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1528646189) · Data from the CMS NPPES public registry.