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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

LESLIE MANESS HARRIS M.D.
NPI 1023464930
Pediatrics - Neonatal-Perinatal Medicine in Milwaukee, WI

Active since May 10, 2016PECOS Enrolled
9200 W WISCONSIN AVE, MILWAUKEE, WI 53226(414) 805-3000(414) 805-6864 Get Directions Write a Review

NPPES record last updated: October 20, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Oct 6, 2026, Oct 2, 2026, Jun 15, 2023 and 3 more (6 updates tracked since 2016).

About Leslie Maness Harris M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

LESLIE MANESS HARRIS M.D. (NPI 1023464930) is an individual neonatal-perinatal medicine provider in Milwaukee, Wisconsin, licensed in Wisconsin (88091-20) and active in the NPI registry since May 2016. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1023464930
Entity TypeIndividualFemale
Primary Taxonomy2080N0001X
Provider Legal NameLESLIE MANESS HARRISCredential: M.D.
Location Address9200 W WISCONSIN AVEMilwaukee, WI 53226-3522
Mailing Address9200 W Wisconsin AveMilwaukee, WI 53226-3522 · (414) 805-3000 · Fax (414) 805-6864
Phone(414) 805-3000
Fax(414) 805-6864
Sole ProprietorNo
Enumeration DateMay 10, 2016
Last NPPES UpdateOctober 20, 20266 updates tracked since enumeration
NPPES CertifiedOctober 20, 2026
✔ NPI 1023464930 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatrics · Neonatal-Perinatal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2080N0001X
License✔ Licensed in WI · 88091-20
Definition
A pediatrician who is the principal care provider for sick newborn infants. Clinical expertise is used for direct patient care and for consulting with obstetrical colleagues to plan for the care of mothers who have high-risk pregnancies.
Also ListedPediatricsTaxonomy 208000000X · License 036164036 (IL), 63978 (CT)
9200 W WISCONSIN AVE, Milwaukee, WI 53226
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Other Names 1

Former Name (1)Leslie Diane Maness M.d.

Other Identifiers 1

Medicaid100433864WI

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include HealthPartners.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Leslie Maness Harris M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

3

Medicare enrollment records show Leslie Harris reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Lurie Children's Medical Group Inc
82 mi
Pediatrics
225 E CHICAGO AVE
Chicago, IL 60611
  • Reassigned Medicare billing, Illinois enrollment
  • 826 clinicians in this Medicare group
NPI 1518064716 (312) 227-6412
Rush University Medical Center
82 mi
Internal Medicine
2011 YORK ROAD, 2ND FLOOR
Oak Brook, IL 60523
  • Reassigned Medicare billing, Illinois enrollment
  • Medicare enrollment name: Rush University Medical Group
  • 2,169 clinicians in this Medicare group
NPI 1801375696 (630) 724-1310
Yale University
782 mi
Adult Mental Health
95 CIRCULAR AVE
Hamden, CT 06514
  • Reassigned Medicare billing, Connecticut enrollment
  • 3,728 clinicians in this Medicare group
NPI 1134391824 (203) 288-6253

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

TRACY BLAIR WANDTKE HERRMANN APNP, CNM
Advanced Practice Midwife
9200 W WISCONSIN AVE
MILWAUKEE, WI 53226
Milwaukee County (414) 805-4777
DR. ZACHARY SMITH DO
Internal Medicine (Gastroenterology)
9200 W WISCONSIN AVE
MILWAUKEE, WI 53226
Milwaukee County (414) 955-6830
DR. COLLEEN ANN CROWE M.D., M.P.H.
Emergency Medicine
9200 W WISCONSIN AVE
MILWAUKEE, WI 53226
Milwaukee County (414) 805-6469
ROBERTO MEJIAS APNP
Nurse Practitioner (Pediatrics)
9200 W WISCONSIN AVE
MILWAUKEE, WI 53226
Milwaukee County (414) 805-6600
MRS. ANNE E B LAKATOS APN-BC, APNP, RN
Nurse Practitioner (Adult Health)
9200 W WISCONSIN AVE, DEPT OF INTERNAL MEDICINE
MILWAUKEE, WI 53226
Milwaukee County (414) 805-6850
MRS. AMANDA M MANDERS APNP
Nurse Practitioner (Adult Health)
9200 W WISCONSIN AVE
MILWAUKEE, WI 53226
Milwaukee County (414) 805-6850
KATHLEEN A WATERHOUSE-SKIBICKI CRNA
Nurse Anesthetist, Certified Registered
9200 W WISCONSIN AVE
MILWAUKEE, WI 53226
Milwaukee County (414) 805-5951
ANDREA L BEQUEST PA
Physician Assistant (Medical)
9200 W WISCONSIN AVE, INTERNAL MEDICINE
MILWAUKEE, WI 53226
Milwaukee County (414) 955-0350

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Leslie Harris's NPI number?

The NPI number for Leslie Harris is 1023464930. It was assigned to this individual provider in the NPPES registry on May 10, 2016. The provider is also known as Leslie Diane Maness M.D..

Where is Leslie Harris located?

Leslie Harris practices at 9200 W Wisconsin Ave, Milwaukee, WI 53226. The listed phone number is (414) 805-3000.

What is Leslie Harris's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Neonatal-Perinatal Medicine, with taxonomy code 2080N0001X.

Is Leslie Harris enrolled in Medicare?

Yes. Leslie Harris is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Leslie Harris's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Leslie Harris reassigns Medicare benefits to 3 organizations: Lurie Children's Medical Group Inc (Chicago, IL), Rush University Medical Center (Oak Brook, IL) and Yale University (Hamden, CT). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Leslie Harris's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Leslie Harris accept?

Health plans from HealthPartners list Leslie Harris as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Leslie Harris was last updated on October 20, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.