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MICHAEL D MASON CRNA
NPI 1295462901
Nurse Anesthetist, Certified Registered in Germantown, WI

Active since August 03, 2022PECOS EnrolledAccepts Medicare Assignment
N112W17975 MEQUON RD, GERMANTOWN, WI 53022(262) 532-7600 Get Directions Write a Review

NPPES record last updated: October 7, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Oct 7, 2025, Feb 8, 2023, Nov 23, 2022 and 1 more (4 updates tracked since 2022).

About Michael D Mason Crna NPPES

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

MICHAEL D MASON CRNA (NPI 1295462901) is an individual nurse anesthetist, certified registered in Germantown, Wisconsin, licensed in Wisconsin (12074-033) and active in the NPI registry since August 2022. He is enrolled in Medicare PECOS, is affiliated with Ascension Ne Wisconsin - St Elizabeth Campus, and maintains a secondary practice location in Oshkosh.

NPPES Registry Identity

NPI1295462901
Entity TypeIndividualMale
Primary Taxonomy367500000X
Provider Legal NameMICHAEL D MASONCredential: CRNA
Location AddressN112W17975 MEQUON RDGermantown, WI 53022-2425
Mailing AddressPo Box 735044Chicago, IL 60673-5044 · (800) 326-2250
Phone(262) 532-7600
Sole ProprietorNo
Medical School CMSOtherGraduated 2022
Enumeration DateAugust 3, 2022
Last NPPES UpdateOctober 7, 20254 updates tracked since enumeration
NPPES CertifiedOctober 7, 2025
✔ NPI 1295462901 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Anesthetist, Certified RegisteredPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code367500000X
License✔ Licensed in WI · 12074-033
Definition
(1) A licensed registered nurse with advanced specialty education in anesthesia who, in collaboration with appropriate health care professionals, provides preoperative, intraoperative, and postoperative care to patients and assists in management and resuscitation of critical patients in intensive care, coronary care, and emergency situations. Nurse anesthetists are certified following successful completion of credentials and state licensure review and a national examination directed by the Council on Certification of Nurse Anesthetists. (2) A registered nurse who is qualified by special training to administer anesthesia in collaboration with a physician or dentist and who can assist in the care of patients who are in critical condition.
N112W17975 MEQUON RD, Germantown, WI 53022
Open in Google Maps ↗

Secondary Practice Location 1

Location 1855 N Westhaven DrOshkosh, WI 54904-7668 · Phone (920) 303-8700

Other Identifiers 1

Medicaid100210161WI

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, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Michael D Mason Crna 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 ID6800279332
PECOS Enrollment IDI20220817000611
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

5

Medicare enrollment records show Michael Mason reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Metro Milwaukee Anesthesia Associates Sc
9.0 mi
Nurse Anesthetist, Certified Registered
17495 W CAPITOL DR
Brookfield, WI 53045
  • Reassigned Medicare billing, Wisconsin enrollment
  • 27 clinicians in this Medicare group
NPI 1609130228 (847) 691-9080
Orthopaedic Hospital Of Wisconsin, LLC
14 mi
General Acute Care Hospital
475 W RIVER WOODS PKWY
Glendale, WI 53212
  • Reassigned Medicare billing, Wisconsin enrollment
  • 62 clinicians in this Medicare group
NPI 1669584983 (414) 961-6800
Aurora Medical Group, Inc.
16 mi
Obstetrics & Gynecology
8905 W LINCOLN AVE, SUITE 515
West Allis, WI 53227
  • Reassigned Medicare billing, Wisconsin enrollment
  • 4,609 clinicians in this Medicare group
NPI 1457592735 (414) 328-8650
Anesthesia Partners Services, S.C.
18 mi
Anesthesiology
2801 W KINNICKINNIC RIVER PKWY STE 1080
Milwaukee, WI 53215
  • Reassigned Medicare billing, Wisconsin enrollment
  • Medicare enrollment name: Anesthesia Partners Services Sc
  • 100 clinicians in this Medicare group
NPI 1861810947 (414) 908-6500
Racine Anesthesia Services, LLC
37 mi
Anesthesiology
3801 SPRING ST
Mount Pleasant, WI 53405
  • Reassigned Medicare billing, Wisconsin enrollment
  • 162 clinicians in this Medicare group
NPI 1467782748 (262) 687-4011

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.

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.
14 services14 patients

Hospital Affiliations CMS Care Compare 2

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

Ascension NE Wisconsin - St Elizabeth Campus

Acute Care Hospitals · Appleton, WI
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number520009
Location1506 S Oneida StAppleton, WI 54915 · Outagamie County
Emergency services Birthing friendly

Aurora Medical Ctr Oshkosh

Acute Care Hospitals · Oshkosh, WI
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number520198
Location855 N Westhaven DriveOshkosh, WI 54904 · Winnebago 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
$123.69 typical visit price
range $53.90 – $163.24
Typical copayment $30.92 (range $13.47 – $40.81)
Most-billed visit code 99204
Established Patient
$67.37 typical visit price
range $17.40 – $133.76
Typical copayment $16.84 (range $4.35 – $33.44)
Most-billed visit code 99213
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 20

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

TROY A HURST PT, DPT
Physical Therapist
N112W17975 MEQUON RD
GERMANTOWN, WI 53022
Washington County (262) 532-7600
ADVANCED HEALTHCARE, S.C.
Durable Medical Equipment & Medical Supplies
N112W17975 MEQUON RD
GERMANTOWN, WI 53022
Washington County (262) 532-7600
ADRIENNE M. MAURER MD
Family Medicine
N112W17975 MEQUON RD
GERMANTOWN, WI 53022
Washington County (262) 532-7600
REBECCA SCHWER PT
Physical Therapist
N112W17975 MEQUON RD
GERMANTOWN, WI 53022
Washington County (262) 532-7680
KIRA L MCDONALD PT
Physical Therapist
N112W17975 MEQUON RD
GERMANTOWN, WI 53022
Washington County (262) 532-7600
GREGORY L RASMUSSEN PT, ATC
Physical Therapist
N112W17975 MEQUON RD
GERMANTOWN, WI 53022
Washington County (262) 532-7600
MARIANNE M JUNCK
Dermatology
N112W17975 MEQUON RD
GERMANTOWN, WI 53022
Washington County (262) 532-7600
DEANN R. LEHNER PT
Physical Therapist
N112W17975 MEQUON RD
GERMANTOWN, WI 53022
Washington County (262) 532-7600

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 Michael Mason's NPI number?

The NPI number for Michael Mason is 1295462901. It was assigned to this individual provider in the NPPES registry on August 3, 2022.

Where is Michael Mason located?

Michael Mason practices at N112w17975 Mequon Rd, Germantown, WI 53022. The listed phone number is (262) 532-7600.

What is Michael Mason's specialty?

The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.

Is Michael Mason enrolled in Medicare?

Yes. Michael Mason 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 Michael Mason's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Michael Mason reassigns Medicare benefits to 5 organizations: Metro Milwaukee Anesthesia Associates Sc (Brookfield, WI), Orthopaedic Hospital Of Wisconsin, LLC (Glendale, WI), Aurora Medical Group, Inc. (West Allis, WI), Anesthesia Partners Services, S.C. (Milwaukee, WI) and Racine Anesthesia Services, LLC (Mount Pleasant, WI). 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 Michael Mason's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Michael Mason accept?

Health plans from CareSource (Common Ground Healthcare) list Michael Mason 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 Michael Mason affiliated with any hospitals?

According to CMS data, Michael Mason is affiliated with Ascension NE Wisconsin - St Elizabeth Campus and Aurora Medical Ctr Oshkosh.

When was this NPI record last updated?

The NPPES record for Michael Mason was last updated on October 7, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.