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DR. JACOB JAY ADASHEK DO
NPI 1144780107
Internal Medicine - Hematology & Oncology in Germantown, WI

Active since March 24, 2019PECOS EnrolledAccepts Medicare Assignment
W180N11070 RIVER LN, GERMANTOWN, WI 53022(262) 532-9755 Get Directions Write a Review

NPPES record last updated: June 9, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Mar 18, 2025, Jun 5, 2024, Jul 9, 2022 and 1 more (4 updates tracked since 2019).

About Dr. Jacob Jay Adashek Do NPPES

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

DR. JACOB JAY ADASHEK DO (NPI 1144780107) is an individual hematology & oncology provider in Germantown, Wisconsin, licensed in Wisconsin (81822) and active in the NPI registry since March 2019. He is enrolled in Medicare PECOS, is affiliated with Aurora Medical Ctr Washington County, and is a graduate of Other (2019).

NPPES Registry Identity

NPI1144780107
Entity TypeIndividualMale
Primary Taxonomy207RH0003X
Provider Legal NameDR. JACOB JAY ADASHEKCredential: DO
Location AddressW180N11070 RIVER LNGermantown, WI 53022-3109
Mailing AddressPo Box 735044Chicago, IL 60673-5044 · (800) 326-2250
Phone(262) 532-9755
Sole ProprietorNo
Medical School CMSOtherGraduated 2019
Enumeration DateMarch 24, 2019
Last NPPES UpdateJune 9, 20264 updates tracked since enumeration
NPPES CertifiedJune 9, 2026
✔ NPI 1144780107 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
License✔ Licensed in WI · 81822
Definition
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
Also ListedInternal Medicine · Medical OncologyTaxonomy 207RX0202X · License 8182221 (WI)
W180N11070 RIVER LN, Germantown, WI 53022
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Other Identifiers 1

Medicaid100322138WI

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Aspirus Health Plan, Blue Cross and Blue Shield of Texas 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 and accepts Medicare assignment

Dr. Jacob Jay Adashek Do is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3072059286
PECOS Enrollment IDI20250522002820
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 Jacob Adashek reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Aurora Advanced Healthcare, Inc.
10 mi
Family Medicine
3003 W GOOD HOPE RD
Milwaukee, WI 53209
  • Reassigned Medicare billing, Wisconsin enrollment
  • 1,615 clinicians in this Medicare group
NPI 1265629133 (414) 352-3100
Aurora Health Care Metro, Inc.
18 mi
General Acute Care Hospital
2900 W OKLAHOMA AVE
Milwaukee, WI 53215
  • Reassigned Medicare billing, Wisconsin enrollment
  • 297 clinicians in this Medicare group
NPI 1861447179 (414) 649-6000
South Texas Oncology And Hematology, PLLC
1,108 mi
Hematology & Oncology
4383 MEDICAL DRIVE
San Antonio, TX 78229
  • Reassigned Medicare billing, Texas enrollment
  • 51 clinicians in this Medicare group
NPI 1770664542 (210) 593-2575

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

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Blood test, comprehensive group of blood chemicals 80053
A comprehensive group of blood chemicals test, also known as a comprehensive metabolic panel, is a blood test that measures your sugar level, electrolyte and fluid balance, kidney function, and liver function. This helps to check your body's overall health.
12 services11 patients

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Aurora Medical Ctr Washington County

Acute Care Hospitals · Hartford, WI
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number520038
Location1032 E Sumner StHartford, WI 53027 · Washington County
Emergency services

Aurora St Lukes Medical Center

Acute Care Hospitals · Milwaukee, WI
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number520138
Location2900 W Oklahoma AveMilwaukee, WI 53215 · Milwaukee County
Emergency services Birthing friendly

Aurora Medical Center

Acute Care Hospitals · Grafton, WI
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number520207
Location975 Port Washington RoadGrafton, WI 53024 · Ozaukee County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 53022 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$163.24 typical visit price
range $53.90 – $163.24
Typical copayment $40.81 (range $13.47 – $40.81)
Most-billed visit code 99205
Established Patient
$95.41 typical visit price
range $17.40 – $133.76
Typical copayment $23.85 (range $4.35 – $33.44)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 18

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

AURORA SURGERY CENTERS, LLC
Clinic/Center (Ambulatory Surgical)
W180N11070 RIVER LN
GERMANTOWN, WI 53022
Washington County (262) 532-9700
VINI CHOPRA KONOWITZ MD
Obstetrics & Gynecology (Urogynecology and Reconstructive Pelvic Surgery)
W180N11070 RIVER LN
GERMANTOWN, WI 53022
Washington County (262) 535-8400
MARK J KAEPPLER
Internal Medicine (Cardiovascular Disease)
W180N11070 RIVER LN
GERMANTOWN, WI 53022
Washington County (262) 535-8400
REBECCA LYNN SIGOURNEY-TENNYCK MD
Obstetrics & Gynecology
W180N11070 RIVER LN
GERMANTOWN, WI 53022
Washington County (262) 532-8477
DAVID SLIWOSKI MD
Pain Medicine (Interventional Pain Medicine)
W180N11070 RIVER LN
GERMANTOWN, WI 53022
Washington County (262) 532-9700
PEEUSH SINGHAL M.D.
Orthopaedic Surgery
W180N11070 RIVER LN
GERMANTOWN, WI 53022
Washington County (262) 532-9700
KATIE ELIZABETH COHEN
Internal Medicine (Cardiovascular Disease)
W180N11070 RIVER LN
GERMANTOWN, WI 53022
Washington County (262) 535-8400
DENNIS P MILLER MD
Obstetrics & Gynecology (Urogynecology and Reconstructive Pelvic Surgery)
W180N11070 RIVER LN
GERMANTOWN, WI 53022
Washington County (262) 535-8400

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 Jacob Adashek's NPI number?

The NPI number for Jacob Adashek is 1144780107. It was assigned to this individual provider in the NPPES registry on March 24, 2019.

Where is Jacob Adashek located?

Jacob Adashek practices at W180n11070 River Ln, Germantown, WI 53022. The listed phone number is (262) 532-9755.

What is Jacob Adashek's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Is Jacob Adashek enrolled in Medicare?

Yes. Jacob Adashek is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Jacob Adashek's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Jacob Adashek reassigns Medicare benefits to 3 organizations: Aurora Advanced Healthcare, Inc. (Milwaukee, WI), Aurora Health Care Metro, Inc. (Milwaukee, WI) and South Texas Oncology And Hematology, PLLC (San Antonio, TX). 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 Jacob Adashek's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Jacob Adashek accept?

Health plans from Anthem Blue Cross and Blue Shield, Aspirus Health Plan, Blue Cross and Blue Shield of Texas, CareSource (Common Ground Healthcare) and HealthPartners and 3 other insurers list Jacob Adashek 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.

Is Jacob Adashek affiliated with any hospitals?

According to CMS data, Jacob Adashek is affiliated with Aurora Medical Ctr Washington County, Aurora St Lukes Medical Center and Aurora Medical Center.

When was this NPI record last updated?

The NPPES record for Jacob Adashek was last updated on June 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 months 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.