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STEVEN A HADLOCK CRNA
NPI 1497842157
Nurse Anesthetist, Certified Registered in Marshfield, WI

Active since October 06, 2006PECOS EnrolledAccepts Medicare Assignment
100/100
CMS Quality Rating
1000 N OAK AVE, MARSHFIELD, WI 54449(715) 387-5511 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Steven A Hadlock Crna NPPES

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

STEVEN A HADLOCK CRNA (NPI 1497842157) is an individual nurse anesthetist, certified registered in Marshfield, Wisconsin, licensed in Wisconsin (130052) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS, is affiliated with Aspirus Medford Hospital & Clinics, Inc, and is a graduate of Other (2004).

NPPES Registry Identity

NPI1497842157
Entity TypeIndividualMale
Primary Taxonomy367500000X
Provider Legal NameSTEVEN A HADLOCKCredential: CRNA
Location Address1000 N OAK AVEMarshfield, WI 54449
Mailing Address1000 N Oak AveMarshfield, WI 54449-5777
Phone(715) 387-5511
Sole ProprietorNo
Medical School CMSOtherGraduated 2004
Enumeration DateOctober 6, 2006
Last NPPES UpdateJuly 8, 2007
✔ NPI 1497842157 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 · 130052
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.
1000 N OAK AVE, Marshfield, WI 54449
Open in Google Maps ↗

Other Identifiers 2

Medicaid44334800WI
Medicare UPINQ34296

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

Steven A Hadlock 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 ID8325098056
PECOS Enrollment IDI20050131000092
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

7

Medicare enrollment records show Steven Hadlock reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Marshfield Clinic Inc
Same address
Clinic/Center
1000 N OAK AVE
Marshfield, WI 54449
  • Reassigned Medicare billing, Wisconsin enrollment
  • 2,540 clinicians in this Medicare group
NPI 1952347981 (715) 387-5511
Mchs Hospitals Inc
Same address
Clinic/Center
1000 N OAK AVE
Marshfield, WI 54449
  • Reassigned Medicare billing, Wisconsin enrollment
  • 2,476 clinicians in this Medicare group
NPI 1093221434 (715) 387-5511
Aspirus Riverview Hospital & Clinics, Inc.
0.7 mi
Rural Health
146 N CENTRAL AVE
Marshfield, WI 54449
  • Reassigned Medicare billing, Wisconsin enrollment
  • 397 clinicians in this Medicare group
NPI 1124633870 (715) 898-1238
Aspirus Wausau Hospital Inc
21 mi
Clinic/Center
103 S 3RD AVE
Edgar, WI 54426
  • Reassigned Medicare billing, Wisconsin enrollment
  • 633 clinicians in this Medicare group
NPI 1447580725 (715) 352-2333
Aspirus Medford Hospital & Clinics, Inc.
26 mi
Rural Health
729 PINE ST
Athens, WI 54411
  • Reassigned Medicare billing, Wisconsin enrollment
  • 376 clinicians in this Medicare group
NPI 1760912919 (715) 748-8100
Aspirus Stevens Point Hospital & Clinics, Inc.
31 mi
Clinic/Center
209 PRENTICE STREET NORTH
Stevens Point, WI 54481
  • Reassigned Medicare billing, Wisconsin enrollment
  • 619 clinicians in this Medicare group
NPI 1679706022 (715) 345-5300
Aspirus Stanley Hospital & Clinics, Inc.
41 mi
Critical Access
1120 PINE ST
Stanley, WI 54768
  • Reassigned Medicare billing, Wisconsin enrollment
  • 168 clinicians in this Medicare group
NPI 1053391730 (715) 644-5571

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

Hospital Affiliations CMS Care Compare

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

Aspirus Medford Hospital & Clinics, Inc

Critical Access Hospitals · Medford, WI
OwnershipVoluntary non-profit - Private
CMS Certification Number521324
Location135 S Gibson StMedford, WI 54451 · Taylor County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 54449 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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

100/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality100
Promoting Interoperability100
Improvement Activities40

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.

ALISON RAE SAMPSON D.O.
Obstetrics & Gynecology
1000 N OAK AVE
MARSHFIELD, WI 54449
Wood County (715) 387-5161
TAMARA L. LEAHY NP
Nurse Practitioner
1000 N OAK AVE
MARSHFIELD, WI 54449
Wood County (800) 782-8581
SAMANTHA ELAINE MOORE RD, CD, CDCES
Dietitian, Registered
1000 N OAK AVE
MARSHFIELD, WI 54449
Wood County (715) 389-7464
ROBERT BUNDY
Student in an Organized Health Care Education/Training Program
1000 N OAK AVE
MARSHFIELD, WI 54449
Wood County (715) 387-5511
EUGENE H. LARSON PA
Physician Assistant
1000 N OAK AVE
MARSHFIELD, WI 54449
Wood County (715) 387-5245
JAMES SKIBBA CRNA
Nurse Anesthetist, Certified Registered
1000 N OAK AVE
MARSHFIELD, WI 54449
Wood County (715) 387-7179
KENNETH E ENGELHART MD
Internal Medicine
1000 N OAK AVE
MARSHFIELD, WI 54449
Wood County (715) 387-5704
KRISTIN M GERNDT MD
Radiology (Vascular & Interventional Radiology)
1000 N OAK AVE
MARSHFIELD, WI 54449
Wood County (715) 389-3474

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 Steven Hadlock's NPI number?

The NPI number for Steven Hadlock is 1497842157. It was assigned to this individual provider in the NPPES registry on October 6, 2006.

Where is Steven Hadlock located?

Steven Hadlock practices at 1000 N Oak Ave, Marshfield, WI 54449. The listed phone number is (715) 387-5511.

What is Steven Hadlock's specialty?

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

Is Steven Hadlock enrolled in Medicare?

Yes. Steven Hadlock 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 Steven Hadlock's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Steven Hadlock reassigns Medicare benefits to 7 organizations: Marshfield Clinic Inc (Marshfield, WI), Mchs Hospitals Inc (Marshfield, WI), Aspirus Riverview Hospital & Clinics, Inc. (Marshfield, WI), Aspirus Wausau Hospital Inc (Edgar, WI), Aspirus Medford Hospital & Clinics, Inc. (Athens, WI) and 2 more organizations, listed in the Medicare section above. 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 Steven Hadlock's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Steven Hadlock affiliated with any hospitals?

According to CMS data, Steven Hadlock is affiliated with Aspirus Medford Hospital & Clinics, Inc.

When was this NPI record last updated?

The NPPES record for Steven Hadlock was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.