MICHAEL WILLIAMSON MD
NPI 1285751859
Orthopaedic Surgery in Kansas City, MO

Q: What is Michael Williamson's NPI number?

The NPI number for Michael Williamson is 1285751859. It was assigned to this individual provider in the NPPES registry on March 26, 2007.

Q: What is Michael Williamson's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.

Active since March 26, 2007PECOS EnrolledAccepts Medicare Assignment

93.27/100

CMS Quality Rating

9411 N OAK TRFY, STE 240, KANSAS CITY, MO 64155(816) 468-8632 Get Directions Write a Review

NPPES record last updated: March 29, 2012. Verified against the NPPES registry weekly; last sync: November 01, 2026.

On this page

About Michael Williamson Md NPPES

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

MICHAEL WILLIAMSON MD (NPI 1285751859) is an individual orthopaedic surgery provider in Kansas City, Missouri, licensed in Missouri (2011024871) and active in the NPI registry since March 2007. He is enrolled in Medicare PECOS, is affiliated with Saint Lukes North Hospital, and is a graduate of University Of Missouri, Columbia School Of Medicine (2005).

NPPES Registry Identity

NPI1285751859

Entity TypeIndividualMale

Primary Taxonomy207X00000X

Provider Legal NameMICHAEL WILLIAMSONCredential: MD

Location Address9411 N OAK TRFY, STE 240Kansas City, MO 64155-2233

Mailing AddressPo Box 504538Saint Louis, MO 63150-4538 · (816) 932-7940 · Fax (816) 932-7957

Phone(816) 468-8632

Sole ProprietorNo

Medical School CMSUniversity Of Missouri, Columbia School Of MedicineGraduated 2005

Enumeration DateMarch 26, 2007

Last NPPES UpdateMarch 29, 2012

✔ NPI 1285751859 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOrthopaedic SurgeryAllopathic & Osteopathic Physicians

Taxonomy Code207X00000X

Licenses✔ Licensed in MO · 2011024871✔ Licensed in PA · MT186890

Definition

An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.

9411 N OAK TRFY, Kansas City, MO 64155

Open in Google Maps ↗

Other Identifiers 2

OtherMT186890PA · License

Medicare PINX88000022MO

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Kansas City, UnitedHealthcare.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 Williamson Md 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 ID7517081557

PECOS Enrollment IDI20111020000686

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 Reassignment

Medicare enrollment records show Michael Williamson reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Saint Lukes Physician Group Inc

22 mi

Nurse Practitioner

8501 W 95TH ST
Overland Park, KS 66212

Reassigned Medicare billing, Missouri enrollment
1,339 clinicians in this Medicare group

NPI 1043826563 (913) 323-8880

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 14

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.

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.

192 services97 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

115 services115 patients

X-ray of shoulder, minimum of 2 views 73030

An X-ray of the shoulder, with a minimum of 2 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of your shoulder bones. This helps in diagnosing conditions like fractures, arthritis, or other abnormalities. The procedure is quick and painless.

100 services57 patients

Aspiration and/or injection of fluid from large joint 20610

99 services53 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.

98 services64 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

97 services80 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

82 services71 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

52 services52 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

50 services39 patients

X-ray of knee, 3 views 73562

An X-ray of the knee, 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the knee from three different angles. This helps medical professionals to diagnose and monitor conditions like arthritis, fractures, or infections. The process is quick and painless.

43 services42 patients

X-ray of hip, 2-3 views 73502

An X-ray of the hip with 2-3 views is a non-invasive imaging test. It uses a small amount of radiation to produce pictures of the hip joint. These images help in diagnosing conditions like fractures, arthritis, or other abnormalities. The process is quick and painless.

37 services31 patients

Injection, methylprednisolone acetate, 40 mg J1030

Methylprednisolone acetate is a medication given through an injection. It's a type of corticosteroid, which reduces inflammation and immune responses. It can be used to treat various conditions like arthritis, allergies, and skin diseases. This dose is 40 mg.

27 services18 patients

Injection into tendon or ligament 20550

An injection into a tendon or ligament involves placing medication directly into these areas to help reduce inflammation and pain. It's often used for conditions like arthritis or tendonitis. The procedure is quick and usually involves a local anesthetic.

14 services12 patients

Prosthetic repair of shoulder joint, total shoulder 23472

Total shoulder prosthetic repair is a surgical procedure to replace a damaged shoulder joint with artificial components. It aims to relieve pain and restore mobility. The procedure involves replacing the ball (humeral head) and socket (glenoid) of the shoulder joint.

11 services11 patients

Hospital Affiliations CMS Care Compare 4

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

Saint Lukes North Hospital

Acute Care Hospitals · Kansas City, MO

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number260062

Location5830 N W Barry RoadKansas City, MO 64154 · Platte County

Emergency services Birthing friendly

St Lukes Hospital Of Kansas City

Acute Care Hospitals · Kansas City, MO

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number260138

Location4401 Wornall RoadKansas City, MO 64111 · Jackson County

Emergency services Birthing friendly

Wright Memorial Hospital

Critical Access Hospitals · Trenton, MO

OwnershipVoluntary non-profit - Private

CMS Certification Number261309

Location191 Iowa BoulevardTrenton, MO 64683 · Grundy County

Emergency services

Hedrick Medical Center

Critical Access Hospitals · Chillicothe, MO

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number261321

Location2799 North Washington StreetChillicothe, MO 64601 · Livingston County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 64155 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

$85.82 typical visit price

range $55.29 – $168.52

Typical copayment $21.45 (range $13.82 – $42.13)

Most-billed visit code 99203

Established Patient

$69.10 typical visit price

range $17.60 – $137.20

Typical copayment $17.27 (range $4.40 – $34.30)

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.

93.27/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

88.86

Promoting Interoperability

Improvement Activities

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.

NORTHLAND NEUROSURGERY, PC

Specialist

9411 N OAK TRFY, SUITE 240
KANSAS CITY, MO 64155

Clay County (816) 777-5775

SELECT PHYSICAL THERAPY HOLDINGS INC

Clinic/Center (Rehabilitation)

9411 N OAK TRFY, STE 200
KANSAS CITY, MO 64155

Clay County (816) 436-6383

SLEEPMED, INC.

Clinic/Center (Sleep Disorder Diagnostic)

9411 N OAK TRFY, SUITE 220A
KANSAS CITY, MO 64155

Clay County (978) 536-7400

DAVID CHARLES MORRIS

Specialist/Technologist, Other (Surgical Assistant)

9411 N OAK TRFY
KANSAS CITY, MO 64155

Clay County (816) 468-8632

TARA SWANEY MPT

Physical Therapist

9411 N OAK TRFY, STE 200
KANSAS CITY, MO 64155

Clay County (816) 436-6383

MERITAS HEALTH CORPORATION

Internal Medicine (Endocrinology, Diabetes & Metabolism)

9411 N OAK TRFY, SUITE 205
KANSAS CITY, MO 64155

Clay County (816) 691-3546

STEVEN RAY BALLARD DO

Family Medicine

9411 N OAK TRFY, SUITE 100
KANSAS CITY, MO 64155

Clay County (816) 436-1800

RAFAEL HERNANDEZ

Pharmacy Technician

9411 N OAK TRFY
KANSAS CITY, MO 64155

Clay County (816) 691-1255

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 Williamson's NPI number?

The NPI number for Michael Williamson is 1285751859. It was assigned to this individual provider in the NPPES registry on March 26, 2007.

Where is Michael Williamson located?

Michael Williamson practices at 9411 N Oak Trfy Ste 240, Kansas City, MO 64155. The listed phone number is (816) 468-8632.

What is Michael Williamson's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.

Is Michael Williamson enrolled in Medicare?

Yes. Michael Williamson 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 organization bills Medicare for Michael Williamson's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Michael Williamson reassigns Medicare benefits to Saint Lukes Physician Group Inc (Overland Park, KS). The 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 Williamson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Michael Williamson accept?

Health plans from Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Kansas City and UnitedHealthcare list Michael Williamson 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 Williamson affiliated with any hospitals?

According to CMS data, Michael Williamson is affiliated with Saint Lukes North Hospital, St Lukes Hospital Of Kansas City, Wright Memorial Hospital and Hedrick Medical Center.

When was this NPI record last updated?

The NPPES record for Michael Williamson was last updated on March 29, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.