CAITLIN ELYSE TIMMERS MD
NPI 1669963799
Obstetrics & Gynecology in Marshfield, WI
About Caitlin Elyse Timmers Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CAITLIN ELYSE TIMMERS MD (NPI 1669963799) is an individual obstetrics & gynecology provider in Marshfield, Wisconsin, licensed in Wisconsin (81013-20) and active in the NPI registry since May 2018. She is enrolled in Medicare PECOS, is affiliated with Thedacare Regional Med Ctr - Neenah, and is a graduate of University Of Wisconsin School Of Medicine (2018).
NPPES Registry Identity
Specialties & Licenses
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
Caitlin Elyse Timmers 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
7Medicare enrollment records show Caitlin Timmers reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Marshfield, WI 54449
- Reassigned Medicare billing, Wisconsin enrollment
- 2,540 clinicians in this Medicare group
Marshfield, WI 54449
- Reassigned Medicare billing, Wisconsin enrollment
- Also billed through NPI 1952890873 (Wisconsin)
- 2,476 clinicians in this Medicare group
Neillsville, WI 54456
- Reassigned Medicare billing, Wisconsin enrollment
- Also billed through NPI 1346239373 (Wisconsin)
- 1,283 clinicians in this Medicare group
Chetek, WI 54728
- Reassigned Medicare billing, Wisconsin enrollment
- 1,616 clinicians in this Medicare group
Park Falls, WI 54552
- Reassigned Medicare billing, Wisconsin enrollment
- Also billed through NPI 1700963048 (Wisconsin)
- 1,351 clinicians in this Medicare group
Neenah, WI 54956
- Reassigned Medicare billing, Wisconsin enrollment
- Medicare enrollment name: Womens Care Of Wisconsin Sc
- 30 clinicians in this Medicare group
Waupun, WI 53963
- Reassigned Medicare billing, Wisconsin enrollment
- 1,447 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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Thedacare Regional Med Ctr - Neenah
Acute Care Hospitals · Neenah, WIThedacare Regional Medical Center - Appleton Inc
Acute Care Hospitals · Appleton, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 54449 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
MARSHFIELD, WI 54449
MARSHFIELD, WI 54449
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 Caitlin Timmers's NPI number?
The NPI number for Caitlin Timmers is 1669963799. It was assigned to this individual provider in the NPPES registry on May 24, 2018.
Where is Caitlin Timmers located?
Caitlin Timmers practices at 1000 N Oak Ave, Marshfield, WI 54449. The listed phone number is (715) 387-5511.
What is Caitlin Timmers's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Caitlin Timmers enrolled in Medicare?
Yes. Caitlin Timmers 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 Caitlin Timmers's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Caitlin Timmers reassigns Medicare benefits to 7 organizations: Marshfield Clinic Inc (Marshfield, WI), Mchs Hospitals Inc (Marshfield, WI), Memorial Hospital, Inc (Neillsville, WI), Lakeview Medical Center Inc Of Rice Lake (Chetek, WI), Flambeau Hospital Inc (Park Falls, WI) and 2 more organizations, listed in the Medicare section above. 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 Caitlin Timmers's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Caitlin Timmers accept?
Health plans from Aspirus Health Plan, CareSource (Common Ground Healthcare), HealthPartners, Network Health and Quartz and 1 other insurer list Caitlin Timmers 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 Caitlin Timmers affiliated with any hospitals?
According to CMS data, Caitlin Timmers is affiliated with Thedacare Regional Med Ctr - Neenah and Thedacare Regional Medical Center - Appleton Inc.
When was this NPI record last updated?
The NPPES record for Caitlin Timmers was last updated on February 27, 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.
# Caitlin Elyse Timmers, MD · NPI 1669963799
Obstetrics & Gynecology physician in Marshfield, Wisconsin. Individual provider, active in the CMS NPPES registry since May 24, 2018.
## Identity
- **NPI:** 1669963799 (Entity type: Individual)
- **Enumerated:** May 24, 2018
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** 81013-20 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 1000 N OAK AVE, Marshfield, WI 54449-5703
- **Phone:** (715) 387-5511
## 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:** 7 organizations under Medicare reassignment (form CMS-855R): Marshfield Clinic Inc (NPI 1952347981, Marshfield, WI); Mchs Hospitals Inc (NPI 1093221434, Marshfield, WI); Memorial Hospital, Inc (NPI 1679746747, Neillsville, WI); Lakeview Medical Center Inc Of Rice Lake (NPI 1659008605, Chetek, WI); Flambeau Hospital Inc (NPI 1194317966, Park Falls, WI); and 2 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Wisconsin School Of Medicine, class of 2018
## Record status
- **NPPES last updated:** February 27, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1669963799) · Data from the CMS NPPES public registry.