DR. MARK J. SCHAEFER M.D.
NPI 1629052428
Anesthesiology in West Allis, WI

Q: What is Mark Schaefer's NPI number?

The NPI number for Mark Schaefer is 1629052428. It was assigned to this individual provider in the NPPES registry on December 5, 2005.

Q: What is Mark Schaefer's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Q: When was this NPI record last updated?

The NPPES record for Mark Schaefer was last updated on June 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.

Active since December 05, 2005PECOS EnrolledAccepts Medicare Assignment

8901 W LINCOLN AVE, 2ND FL, WEST ALLIS, WI 53227(414) 329-4300 Get Directions Write a Review

NPPES record last updated: June 4, 2025. Verified against the NPPES registry weekly; last sync: October 04, 2026.

Record update history: Jun 4, 2025, Nov 19, 2021, Jan 3, 2017 (3 updates tracked since 2017).

On this page

About Dr. Mark J. Schaefer M.d. NPPES

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

DR. MARK J. SCHAEFER M.D. (NPI 1629052428) is an individual anesthesiology provider in West Allis, Wisconsin, licensed in Wisconsin (31911-020) and active in the NPI registry since December 2005. He is enrolled in Medicare PECOS, is affiliated with West Allis Memorial Hospital, and is a graduate of Medical College Of Wisconsin (1989).

NPPES Registry Identity

NPI1629052428

Entity TypeIndividualMale

Primary Taxonomy207L00000X

Provider Legal NameDR. MARK J. SCHAEFERCredential: M.D.

Location Address8901 W LINCOLN AVE, 2ND FLWest Allis, WI 53227-2409

Mailing AddressPo Box 735044Chicago, IL 60673-5044 · (800) 326-2250

Phone(414) 329-4300

Sole ProprietorNo

Medical School CMSMedical College Of WisconsinGraduated 1989

Enumeration DateDecember 5, 2005

Last NPPES UpdateJune 4, 20253 updates tracked since enumeration

NPPES CertifiedJune 4, 2025

✔ NPI 1629052428 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians

Taxonomy Code207L00000X

License✔ Licensed in WI · 31911-020

Definition

An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.

8901 W LINCOLN AVE, West Allis, WI 53227

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Other Identifiers 2

Medicaid31915900WI

Medicaid1629052428WI

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include CareSource (Common Ground Healthcare).Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Mark J. Schaefer M.d. 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 ID9234110248

PECOS Enrollment IDI20050915000589

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.

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.

Anesthesia for other procedure on large bowel using an endoscope 00811

Anesthesia for an endoscopic procedure on the large bowel ensures comfort and relaxation during the procedure. You'll be given medication to make you drowsy or asleep, eliminating any discomfort. The medication can be administered through a vein or inhaled.

12 services12 patients

Hospital Affiliations CMS Care Compare

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

West Allis Memorial Hospital

Acute Care Hospitals · West Allis, WI

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number520139

Location8901 W Lincoln AveWest Allis, WI 53227 · Milwaukee County

Emergency services Birthing friendly

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.

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