DR. TIMOTHY ERIK GUNDLACH M.D.
NPI 1144200205
Anesthesiology in Milwaukee, WI
About Dr. Timothy Erik Gundlach M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. TIMOTHY ERIK GUNDLACH M.D. (NPI 1144200205) is an individual anesthesiology provider in Milwaukee, Wisconsin, licensed in Wisconsin (33876-020) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS, is affiliated with Aurora St Lukes Medical Center, and is a graduate of University Of Wisconsin School Of Medicine (1985).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 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
Dr. Timothy Erik Gundlach M.d. 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 Timothy Gundlach reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Milwaukee, WI 53215
- Reassigned Medicare billing, Wisconsin enrollment
- 4,609 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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Aurora St Lukes Medical Center
Acute Care Hospitals · Milwaukee, WIOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MILWAUKEE, WI 53233
MILWAUKEE, WI 53233
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 Timothy Gundlach's NPI number?
The NPI number for Timothy Gundlach is 1144200205. It was assigned to this individual provider in the NPPES registry on January 17, 2006.
Where is Timothy Gundlach located?
Timothy Gundlach practices at 945 N 12th St, Milwaukee, WI 53233. The listed phone number is (414) 219-2000.
What is Timothy Gundlach's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Timothy Gundlach enrolled in Medicare?
Yes. Timothy Gundlach 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 Timothy Gundlach's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Timothy Gundlach reassigns Medicare benefits to Aurora Medical Group, Inc. (Milwaukee, 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 Timothy Gundlach's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Timothy Gundlach accept?
Health plans from CareSource (Common Ground Healthcare) list Timothy Gundlach 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 Timothy Gundlach affiliated with any hospitals?
According to CMS data, Timothy Gundlach is affiliated with Aurora St Lukes Medical Center.
When was this NPI record last updated?
The NPPES record for Timothy Gundlach was last updated on September 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# Dr. Timothy Erik Gundlach, M.D. · NPI 1144200205
Anesthesiology physician in Milwaukee, Wisconsin. Individual provider, active in the CMS NPPES registry since January 17, 2006.
## Identity
- **NPI:** 1144200205 (Entity type: Individual)
- **Enumerated:** January 17, 2006
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 33876-020 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 945 N 12TH ST, Milwaukee, WI 53233-1305
- **Phone:** (414) 219-2000
## 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:** Aurora Medical Group, Inc. (NPI 1427271378, Milwaukee, WI), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Wisconsin School Of Medicine, class of 1985
## Record status
- **NPPES last updated:** September 15, 2025
- **Other identifiers:** Medicaid 1144200205 (WI)
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Source: [NPI Profile](https://npiprofile.com/npi/1144200205) · Data from the CMS NPPES public registry.