Marco Loayza, M.D.
NPI 1659690717 · Neonatal-Perinatal Medicine Physician · Brookfield, WI
Marco Loayza, M.D. is a Neonatal-Perinatal Medicine Physician provider in Brookfield, WI (NPI 1659690717).
Provider details
- NPI number
- 1659690717
- Entity type
- Individual
- Primary specialty
- Neonatal-Perinatal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 73228 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
16 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
- 2010-05-27
- Last updated
- 2025-05-13
- Certified
- 2025-05-01
Frequently asked questions
- What is Marco Loayza's NPI number?
- Marco Loayza's National Provider Identifier (NPI) is 1659690717, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marco Loayza's specialty?
- Marco Loayza is listed in the NPPES registry with a primary specialty of Neonatal-Perinatal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Marco Loayza located?
- Marco Loayza's practice location on file with NPPES is 17345 Civic Dr Ste 1327, Brookfield, WI 53045-5070.
- What is Marco Loayza's phone number?
- The practice phone number listed in the NPPES registry for Marco Loayza is (414) 447-7330.
- Is Marco Loayza's NPI active?
- Yes — Marco Loayza's NPI (1659690717) is active in the NPPES registry as of the last update on 2025-05-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.