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DR. JOHN J AIKEN MD
NPI 1003867599
Surgery - Pediatric Surgery in Milwaukee, WI

Active since May 12, 2006PECOS Enrolled
9000 W WISCONSIN AVE, PEDIATRIC SURGERY, MILWAUKEE, WI 53226(414) 266-6550(414) 266-6579 Get Directions Write a Review

NPPES record last updated: March 8, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Mar 8, 2024, Jun 9, 2023 (2 updates tracked since 2023).

About Dr. John J Aiken Md NPPES

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

DR. JOHN J AIKEN MD (NPI 1003867599) is an individual pediatric surgery provider in Milwaukee, Wisconsin, licensed in Wisconsin (34722) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1003867599
Entity TypeIndividualMale
Primary Taxonomy2086S0120X
Provider Legal NameDR. JOHN J AIKENCredential: MD
Location Address9000 W WISCONSIN AVE, PEDIATRIC SURGERYMilwaukee, WI 53226-4874
Mailing Address9000 W Wisconsin Ave, Pediatric SurgeryMilwaukee, WI 53226-4874 · (414) 266-6550 · Fax (414) 266-6579
Phone(414) 266-6550
Fax(414) 266-6579
Sole ProprietorNo
Enumeration DateMay 12, 2006
Last NPPES UpdateMarch 8, 20242 updates tracked since enumeration
NPPES CertifiedMarch 8, 2024
✔ NPI 1003867599 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySurgery · Pediatric SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code2086S0120X
License✔ Licensed in WI · 34722
Definition
A surgeon with expertise in the management of surgical conditions in premature and newborn infants, children and adolescents.
9000 W WISCONSIN AVE, Milwaukee, WI 53226
Open in Google Maps ↗

Secondary Practice Locations 2

Location 12575 E Evergreen DriveAppleton, WI 54913-8904 · Phone (920) 969-5353 · Fax (414) 337-7201
Location 29200 W Wisconsin AveMilwaukee, WI 53226-3522 · Phone (414) 805-5800 · Fax (414) 805-8097

Other Identifiers 3

Other002000105QHumana
Medicaid31960800WI
Medicaid1003867599WI

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Aspirus Health Plan, CareSource (Common Ground Healthcare) and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. John J Aiken Md 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 Reassignment

Medicare enrollment records show John Aiken reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

The Medical College Of Wisconsin, Inc.
0.1 mi
Internal Medicine
8701 WATERTOWN PLANK RD
Milwaukee, WI 53226
  • Reassigned Medicare billing, Wisconsin enrollment
  • 3,983 clinicians in this Medicare group
NPI 1699720086 (414) 955-7101

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.

MS. LESLIE L. TALBERT NP
Nurse Practitioner (Pediatrics)
9000 W WISCONSIN AVE, PEDIATRIC CRITICAL CARE
MILWAUKEE, WI 53226
Milwaukee County (414) 266-3360
SARAH MARIE RUMLER DO
Pediatrics (Pediatric Hematology-Oncology)
9000 W WISCONSIN AVE
MILWAUKEE, WI 53226
Milwaukee County (414) 955-4170
ALISON COREN
Pediatrics (Pediatric Endocrinology)
9000 W WISCONSIN AVE
MILWAUKEE, WI 53226
Milwaukee County (414) 266-6750
BRANDON PALMER M.D.
Pediatrics
9000 W WISCONSIN AVE
MILWAUKEE, WI 53226
Milwaukee County (414) 337-7050
AIDAN JAMES REID DO
Pediatrics
9000 W WISCONSIN AVE
MILWAUKEE, WI 53226
Milwaukee County (414) 266-6800
KYNDAL LYN HETTICH RD, CSP, CD
Dietitian, Registered
9000 W WISCONSIN AVE
MILWAUKEE, WI 53226
Milwaukee County (414) 266-5938
CARISA MARIE DIMATTINA LCSW
Social Worker (Clinical)
9000 W WISCONSIN AVE
MILWAUKEE, WI 53226
Milwaukee County (414) 581-4004
BREYA LOGAN WHITEFIELD PHD
Psychologist (Clinical)
9000 W WISCONSIN AVE
MILWAUKEE, WI 53226
Milwaukee County (414) 266-2000

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 John Aiken's NPI number?

The NPI number for John Aiken is 1003867599. It was assigned to this individual provider in the NPPES registry on May 12, 2006.

Where is John Aiken located?

John Aiken practices at 9000 W Wisconsin Ave Pediatric Surgery, Milwaukee, WI 53226. The listed phone number is (414) 266-6550.

What is John Aiken's specialty?

The primary specialty registered for this NPI is Surgery, specializing in Pediatric Surgery, with taxonomy code 2086S0120X.

Is John Aiken enrolled in Medicare?

Yes. John Aiken is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for John Aiken's services?

According to the CMS Revalidation Reassignment List (October 2026 release), John Aiken reassigns Medicare benefits to The Medical College Of Wisconsin, Inc. (Milwaukee, WI). The 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 John Aiken's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does John Aiken accept?

Health plans from Anthem Blue Cross and Blue Shield, Aspirus Health Plan, CareSource (Common Ground Healthcare) and HealthPartners list John Aiken 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 John Aiken was last updated on March 8, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years 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.