1. Home
  2. Directory
  3. Missouri
  4. Arnold
  5. Nurse Practitioner
  6. NPI Profile

TRACY M HASLER NP
NPI 1336230499
Nurse Practitioner in Arnold, MO

Active since September 27, 2006PECOS EnrolledAccepts Medicare Assignment
1237 WATER TOWER PL STE A, ARNOLD, MO 63010(363) 213-1906(636) 321-3161 Get Directions Write a Review

NPPES record last updated: April 3, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Apr 3, 2025, Jan 25, 2023 (2 updates tracked since 2023).

About Tracy M Hasler Np NPPES

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

TRACY M HASLER NP (NPI 1336230499) is an individual nurse practitioner in Arnold, Missouri, licensed in Missouri (155893) and active in the NPI registry since September 2006. She is enrolled in Medicare PECOS, is affiliated with Mercy Hospital South, and is a graduate of Other (2004).

NPPES Registry Identity

NPI1336230499
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameTRACY M HASLERCredential: NP
Location Address1237 WATER TOWER PL STE AArnold, MO 63010-2116
Mailing AddressPo Box 776084Chicago, IL 60677-6084 · (636) 321-3190 · Fax (636) 321-3161
Phone(363) 213-1906
Fax(636) 321-3161
Sole ProprietorNo
Medical School CMSOtherGraduated 2004
Enumeration DateSeptember 27, 2006
Last NPPES UpdateApril 3, 20252 updates tracked since enumeration
NPPES CertifiedApril 3, 2025
✔ NPI 1336230499 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363L00000X
License✔ Licensed in MO · 155893
Definition
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
1237 WATER TOWER PL STE A, Arnold, MO 63010
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan, Ambetter Health 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

Tracy M Hasler Np 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 ID8921160003
PECOS Enrollment IDI20081224000269
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 Tracy Hasler reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mercy Clinic East Communities
4.7 mi
Family Medicine
10004 KENNERLY RD STE 395B
Saint Louis, MO 63128
  • Reassigned Medicare billing, Missouri enrollment
  • 228 clinicians in this Medicare group
NPI 1720635329 (314) 849-3500
Deaconess Illinois Clinic, Inc
12 mi
Family Medicine
1000 ELEVEN S STE 2E
Columbia, IL 62236
  • Reassigned Medicare billing, Illinois enrollment
  • 29 clinicians in this Medicare group
NPI 1962128256 (618) 281-2773
Deaconess Illinois Red Bud Regional Hospital Inc
26 mi
Rural Health
325 SPRING ST
Red Bud, IL 62278
  • Reassigned Medicare billing, Illinois enrollment
  • 22 clinicians in this Medicare group
NPI 1619693926 (618) 282-7373

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.

Mercy Hospital South

Acute Care Hospitals · Saint Louis, MO
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260077
Location10010 Kennerly RoadSaint Louis, MO 63128 · St. Louis County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63010 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
$86.32 typical visit price
range $55.65 – $169.38
Typical copayment $21.58 (range $13.91 – $42.34)
Most-billed visit code 99203
Established Patient
$98.37 typical visit price
range $17.76 – $137.92
Typical copayment $24.59 (range $4.44 – $34.48)
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.

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 Tracy Hasler's NPI number?

The NPI number for Tracy Hasler is 1336230499. It was assigned to this individual provider in the NPPES registry on September 27, 2006.

Where is Tracy Hasler located?

Tracy Hasler practices at 1237 Water Tower Pl Ste A, Arnold, MO 63010. The listed phone number is (363) 213-1906.

What is Tracy Hasler's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Is Tracy Hasler enrolled in Medicare?

Yes. Tracy Hasler 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 Tracy Hasler's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Tracy Hasler reassigns Medicare benefits to 3 organizations: Mercy Clinic East Communities (Saint Louis, MO), Deaconess Illinois Clinic, Inc (Columbia, IL) and Deaconess Illinois Red Bud Regional Hospital Inc (Red Bud, IL). 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 Tracy Hasler's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Tracy Hasler accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan and Ambetter of Oklahoma and 3 other insurers list Tracy Hasler 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 Tracy Hasler affiliated with any hospitals?

According to CMS data, Tracy Hasler is affiliated with Mercy Hospital South.

When was this NPI record last updated?

The NPPES record for Tracy Hasler was last updated on April 3, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.