Marco Loayza, M.D.
Neonatal-Perinatal Medicine Physician · Brookfield, WI
Marco Loayza, M.D. is a neonatal-perinatal medicine physician with a practice address in Brookfield, Wisconsin, and NPI 1659690717, issued on May 27, 2010. Check the license (Wisconsin 73228, as entered in NPPES) on the Wisconsin Medical Examining Board; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Marco Loayza
- Credential
- M.D.
- Primary taxonomy
- Neonatal-Perinatal Medicine Physician 2080N0001X
- License numbers
- 73228 WI
25149 MS
Self-reported in NPPES; status is on the state search - Practice location
- 17345 Civic Dr Ste 1327, Brookfield, WI 53045
- Phone
- (414) 447-7330
- Enumerated
- May 27, 2010
- Entity
- Type 1 · individual
Also registered at 17345 Civic Dr Ste 1327
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Brent Arnold, M.D.Neonatal-Perinatal Medicine Physician1659460657
- Paula Osterhout, M.D.Neonatal-Perinatal Medicine Physician1871814293
- Baiba Steinbrekera, M.D.Neonatal-Perinatal Medicine Physician1184980997
Verify Marco Loayza in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 73228Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
Neonatal-Perinatal Medicine Physician providers in Wisconsin
There are 146 neonatal-perinatal medicine physician records in Wisconsin. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
Other neonatal-perinatal medicine physician records in Wisconsin
- John Adair, M.DMadison, WI1326467317
- Daniel Adu, MDMadison, WI1255643029
- Adeleye Afolayan, M.DMilwaukee, WI1760649776
- Candena Allenbrand, M.D.Green Bay, WI1285626846
- Benjamin Araya, DOMilwaukee, WI1811551013
- Brent Arnold, M.D.Brookfield, WI1659460657
- Nandini Arul, M.D.Milwaukee, WI1093737959
- Mir Abdul Basir, MDMilwaukee, WI1013967546
- Adam Bauer, M.D.Madison, WI1831455542
- Nicole Baumann-Blackmore, MDMadison, WI1548227838
Common questions
What is Marco Loayza, M.D.'s NPI number?
Marco Loayza, M.D.'s National Provider Identifier (NPI) is 1659690717, issued on May 27, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Marco Loayza, M.D. located?
The NPPES record lists a practice address at 17345 Civic Dr Ste 1327, Brookfield, WI, 53045. Phone: (414) 447-7330. Providers update this record themselves, so call before visiting.
How can I verify Marco Loayza, M.D.'s license?
NPPES lists Wisconsin license number 73228, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments, the HHS-OIG exclusion list) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.