Steven Marmer, DO, MS
NPI 1811457518 · Cardiovascular Disease Physician · Milwaukee, WI
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Steven Marmer, DO, MS is a Cardiovascular Disease Physician provider in Milwaukee, WI (NPI 1811457518).
Provider details
- NPI number
- 1811457518
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO, MS
- Sex
- Male
- Sole proprietor
- No
- License
- 75038 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
7 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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
Registry dates
- Enumerated
- 2019-03-20
- Last updated
- 2025-08-26
- Certified
- 2025-08-26
Frequently asked questions
- What is Steven Marmer's NPI number?
- Steven Marmer's National Provider Identifier (NPI) is 1811457518, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Steven Marmer's specialty?
- Steven Marmer is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Steven Marmer located?
- Steven Marmer's practice location on file with NPPES is 9200 W Wisconsin Ave, Milwaukee, WI 53226-3522.
- What is Steven Marmer's phone number?
- The practice phone number listed in the NPPES registry for Steven Marmer is (414) 805-6000.
- Does Steven Marmer accept Medicare?
- Steven Marmer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Steven Marmer's NPI active?
- Yes — Steven Marmer's NPI (1811457518) is active in the NPPES registry as of the last update on 2025-08-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.