Marissa Decker, M.D.
NPI 1912388638 · Obstetrics & Gynecology Physician · Madison, WI
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marissa Decker, M.D. is a Obstetrics & Gynecology Physician provider in Madison, WI (NPI 1912388638).
Provider details
- NPI number
- 1912388638
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 71587-20 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
11 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (1)
- W180n8000 Town Hall RdMenomonee Falls, WI 53051-4002Phone: (262) 255-2500
Registry dates
- Enumerated
- 2015-06-18
- Last updated
- 2023-06-09
- Certified
- 2023-06-09
Frequently asked questions
- What is Marissa Decker's NPI number?
- Marissa Decker's National Provider Identifier (NPI) is 1912388638, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marissa Decker's specialty?
- Marissa Decker is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Marissa Decker located?
- Marissa Decker's practice location on file with NPPES is 752 N High Point Rd, Madison, WI 53717-2236.
- What is Marissa Decker's phone number?
- The practice phone number listed in the NPPES registry for Marissa Decker is (608) 824-4000.
- Does Marissa Decker accept Medicare?
- Marissa Decker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marissa Decker's NPI active?
- Yes — Marissa Decker's NPI (1912388638) is active in the NPPES registry as of the last update on 2023-06-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.