NPPES file of Aug 9, 2026

Ricardo S. Mastrolia, M.D.

Maternal & Fetal Medicine Physician · Milwaukee, WI

Ricardo S. Mastrolia, M.D. is a maternal & fetal medicine physician with a practice address in Milwaukee, Wisconsin, and NPI 1588853667, issued on Oct 15, 2007. Check the license (Wisconsin 53071-20, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1588853667
Name
Ricardo S. Mastrolia
Credential
M.D.
Primary taxonomy
Maternal & Fetal Medicine Physician 207VM0101X
License numbers
53071-20 WI
25MA08075900 NJ
Self-reported in NPPES; status is on the state search
Practice location
1020 N 12TH St, Milwaukee, WI 53233
Phone
(414) 219-4100
Enumerated
Oct 15, 2007
Record last updated
Jun 4, 2024
Medicaid ID
1588853667 WI
Medicare enrollment
Enrolled (PECOS I20090805000625); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest maternal & fetal medicine physician records → All 56 in Wisconsin → Look up another NPI →

Also registered at 1020 N 12TH St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Omair Ahmed, MBBS, MDGeriatric Medicine (Internal Medicine) Physician1699417972
  2. Ruric (andy) Anderson, MDInternal Medicine Physician1205995255
  3. Carmel Bankier Sweet, RDRegistered Dietitian1457427544
  4. Savannah Baun, LMTMassage Therapist1336898212
  5. Cynthia Beale, CNMAdvanced Practice Midwife1821273350
  6. Krista BergerAdvanced Practice Midwife1245100841

Verify Ricardo S. Mastrolia in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWisconsin Medical Examining Board
    Search for license 53071-20    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Wisconsin license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through 2 group practices

  1. Aurora Advanced Healthcare, Inc.Mequon, WI
  2. Aurora Medical Group, Inc.Milwaukee, WI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Ricardo S. Mastrolia among 56 maternal & fetal medicine physician records in Wisconsin

Ricardo S. Mastrolia, M.D. is one of 56 maternal & fetal medicine physician records with a practice address in Wisconsin. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 39% of them.

  • NPI issued2007 · 39% of these records are older, 46% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileYes · 71% of these records are
  • Graduated2002 · median 2007 among the 40 with a school on file
  • Record last updated2024 · 46% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207VM0101X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Maternal & Fetal Medicine Physician providers in Wisconsin

There are 56 maternal & fetal medicine physician records in Wisconsin.

All 56 in Wisconsin → Every provider in Milwaukee → Maternal & Fetal Medicine Physician nationwide →

The 8 maternal & fetal medicine physician records with the nearest ZIP codes

  1. Carolyn Chatterton, DO, MPHMilwaukee, WI 532331245750744
  2. Garrett Fitzgerald, M.D.Milwaukee, WI 532331447575386
  3. Marilynn Frederiksen, M.D.Milwaukee, WI 532331811996796
  4. Robert Para, M.D.Milwaukee, WI 532331245646157
  5. Ryan Stone, MDMilwaukee, WI 532331346454634
  6. Katie Swor, D.O.Milwaukee, WI 532331629481445
  7. David Merrill, MDWest Allis, WI 532271972587053
  8. Kristine Strickland, MDWest Allis, WI 532271568660959

Common questions

What is Ricardo S. Mastrolia, M.D.'s NPI number?

Ricardo S. Mastrolia, M.D.'s National Provider Identifier (NPI) is 1588853667, issued on Oct 15, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Ricardo S. Mastrolia, M.D. located?

The NPPES record lists a practice address at 1020 N 12TH St, Milwaukee, WI, 53233. Phone: (414) 219-4100. Providers update this record themselves, so call before visiting.

How can I verify Ricardo S. Mastrolia, M.D.'s license?

NPPES lists Wisconsin license number 53071-20, 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), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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 only as counts) 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 9, 2026.