MADDISSON ANN HASLETT NP
NPI 1700524618
Nurse Practitioner - Gerontology in Saint Louis, MO

Active since May 23, 2022PECOS EnrolledAccepts Medicare Assignment
12639 OLD TESSON RD STE 115, SAINT LOUIS, MO 63128(314) 849-0311(314) 849-4423 Get Directions Write a Review

NPPES record last updated: August 19, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Apr 4, 2023, May 23, 2022 (2 updates tracked since 2022).

About Maddisson Ann Haslett Np NPPES

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

MADDISSON ANN HASLETT NP (NPI 1700524618) is an individual gerontology provider in Saint Louis, Missouri, licensed in Missouri (2022017958) and active in the NPI registry since May 2022. She is enrolled in Medicare PECOS, is affiliated with Mercy Hospital South, and is a graduate of Other (2021).

NPPES Registry Identity

NPI1700524618
Entity TypeIndividualFemale
Primary Taxonomy363LG0600X
Provider Legal NameMADDISSON ANN HASLETTCredential: NP
Location Address12639 OLD TESSON RD STE 115Saint Louis, MO 63128-2786
Mailing Address1519 Tower Grove Ave Apt 1402Saint Louis, MO 63110-2276 · (618) 339-3175
Fax(314) 849-4423
Sole ProprietorNo
Medical School CMSOtherGraduated 2021
Enumeration DateMay 23, 2022
Last NPPES UpdateAugust 19, 20252 updates tracked since enumeration
NPPES CertifiedAugust 19, 2025
NPI 1700524618 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyNurse Practitioner · GerontologyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LG0600X
Licenses Licensed in MO · 2022017958 Licensed in IL · 209025216
12639 OLD TESSON RD STE 115, Saint Louis, MO 63128

Accepted 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

Maddisson Ann Haslett 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 ID7416335419
PECOS Enrollment IDI20220603000463
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 6

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.

Ultrasonic guidance for needle placement 76942
Ultrasonic guidance for needle placement is a technique where sound waves create images that help accurately position the needle during procedures. This method ensures precision, minimizes discomfort, and increases safety.
91 services17 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
81 services48 patients
Aspiration and/or injection of fluid from large joint 20610
This procedure involves using a needle to remove (aspiration) or introduce (injection) fluid into a large joint like the knee or hip. It can help diagnose conditions, relieve discomfort, or deliver medication directly to the joint.
69 services17 patients
Injection of trigger points, 3 or more muscles 20553
Trigger point injection therapy involves injecting medication into specific areas of your muscles, known as trigger points. These are areas that produce pain and discomfort. If you have three or more muscles affected, each will be treated individually.
68 services15 patients
Fluoroscopic guidance for needle placement 77002
Fluoroscopic guidance for needle placement is a medical procedure that uses a special X-ray technology to help accurately place a needle in the body. It's often used in biopsies, injections or other treatments to ensure precision and safety.
68 services17 patients
Hyaluronan or derivative, hyalgan, supartz or visco-3, for intra-articular injection, per dose J7321
Hyaluronan or derivatives like Hyalgan, Supartz, or Visco-3, are used in intra-articular injections for joint pain relief. They help by improving joint lubrication, reducing inflammation, and promoting tissue healing. Each dose is administered directly into the joint space.
62 services15 patients

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 63128 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.

Other Providers at the Same Location NPPES 10

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

Orthopaedic Surgery (Hand Surgery)
12639 OLD TESSON RD STE 115
SAINT LOUIS, MO 63128
Nurse Practitioner
12639 OLD TESSON RD STE 115
SAINT LOUIS, MO 63128
Podiatrist (Foot & Ankle Surgery)
12639 OLD TESSON RD STE 115
SAINT LOUIS, MO 63128
Physician Assistant
12639 OLD TESSON RD STE 115
SAINT LOUIS, MO 63128
Physician Assistant
12639 OLD TESSON RD STE 115
SAINT LOUIS, MO 63128
Orthopaedic Surgery
12639 OLD TESSON RD STE 115
SAINT LOUIS, MO 63128
Orthopaedic Surgery
12639 OLD TESSON RD STE 115
SAINT LOUIS, MO 63128
Physician Assistant
12639 OLD TESSON RD STE 115
SAINT LOUIS, MO 63128

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 Maddisson Haslett's NPI number?

The NPI number for Maddisson Haslett is 1700524618. It was assigned to this individual provider in the NPPES registry on May 23, 2022.

Where is Maddisson Haslett located?

Maddisson Haslett practices at 12639 Old Tesson Rd Ste 115, Saint Louis, MO 63128. The listed phone number is (314) 849-0311.

What is Maddisson Haslett's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Gerontology, with taxonomy code 363LG0600X.

Is Maddisson Haslett enrolled in Medicare?

Yes. Maddisson Haslett 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.

What insurance does Maddisson Haslett accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Arkansas Health & Wellness, Ambetter from Home State Health and Ambetter from Sunflower Health Plan and 3 other insurers list Maddisson Haslett 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 Maddisson Haslett affiliated with any hospitals?

According to CMS data, Maddisson Haslett is affiliated with Mercy Hospital South.

When was this NPI record last updated?

The NPPES record for Maddisson Haslett was last updated on August 19, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.