WILLIAM AITKEN
NPI 1861883563
Internal Medicine - Cardiovascular Disease in Las Vegas, NV

Q: What is William Aitken's NPI number?

The NPI number for William Aitken is 1861883563. It was assigned to this individual provider in the NPPES registry on February 17, 2015.

Q: What is William Aitken's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Q: When was this NPI record last updated?

The NPPES record for William Aitken was last updated on August 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.

Active since February 17, 2015PECOS EnrolledAccepts Medicare Assignment

10040 ALTA DR STE 350, LAS VEGAS, NV 89145(702) 360-7600(702) 363-3814 Get Directions Write a Review

NPPES record last updated: August 7, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Aug 7, 2026, Jul 23, 2024, Mar 17, 2018 (3 updates tracked since 2018).

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About William Aitken NPPES

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

WILLIAM AITKEN (NPI 1861883563) is an individual cardiovascular disease provider in Las Vegas, Nevada, licensed in Nevada (28881) and active in the NPI registry since February 2015. He is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Other (2017).

NPPES Registry Identity

NPI1861883563

Entity TypeIndividualMale

Primary Taxonomy207RC0000X

Provider Legal NameWILLIAM AITKEN

Location Address10040 ALTA DR STE 350Las Vegas, NV 89145-8658

Mailing Address6355 S Buffalo Dr Fl 3Las Vegas, NV 89113-2133 · (702) 216-3346

Phone(702) 360-7600

Fax(702) 363-3814

Sole ProprietorYes

Medical School CMSOtherGraduated 2017

Enumeration DateFebruary 17, 2015

Last NPPES UpdateAugust 7, 20263 updates tracked since enumeration

NPPES CertifiedAugust 7, 2026

✔ NPI 1861883563 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RC0000X

Licenses✔ Licensed in NV · 28881✔ Licensed in TN · 71854

Definition

An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.

Also ListedInternal MedicineTaxonomy 207R00000X · License 125070082 (IL), TRN28047 (FL)

10040 ALTA DR STE 350, Las Vegas, NV 89145

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Secondary Practice Locations 2

Location 11211 Union Ave Ste 965Memphis, TN 38104-6638 · Phone (901) 435-8550 · Fax (901) 478-0781

Location 21251 Wesley Dr Ste 100Memphis, TN 38116-6442 · Phone (901) 435-8550 · Fax (901) 395-2621

Other Identifiers 2

Other28881NV · License

Medicaid1861883563NV

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

William Aitken 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 ID4385900380

PECOS Enrollment IDI20260618002629

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

Medicare enrollment records show William Aitken reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Intermountain Medical Holdings Nevada Inc

20 mi

Internal Medicine

595 W LAKE MEAD PKWY
Henderson, NV 89015

Reassigned Medicare billing, Nevada enrollment
521 clinicians in this Medicare group

NPI 1245997279 (702) 566-5500

Specialty Physician Group LLC

1,433 mi

Cardiovascular Disease

7460 WOLF RIVER BLVD
Germantown, TN 38138

Reassigned Medicare billing, Tennessee enrollment
122 clinicians in this Medicare group

NPI 1174842181 (901) 763-0200

Lee Memorial Health System

2,071 mi

Emergency Medicine

2780 CLEVELAND AVE, SUITE 705
Fort Myers, FL 33901

Reassigned Medicare billing, Florida enrollment
1,345 clinicians in this Medicare group

NPI 1134222532 (239) 334-5244

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 9

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

52 services22 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

19 services11 patients

Ultrasound of heart with color-depicted blood flow, rate and valve function 93325

An ultrasound of the heart, also known as an echocardiogram, uses sound waves to create pictures of your heart. It shows the structure, movement, and blood flow within your heart. This helps assess the heart's health and function, including the valves and rate.

17 services17 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

16 services16 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

This is a heart ultrasound, also known as an echocardiogram. It uses sound waves to create pictures of your heart, showing how blood flows through it. The color depicts the blood flow's speed and direction. It also checks the heart's valves to ensure they're working properly.

14 services14 patients

Ultrasound of heart with probe in esophagus, with report 93312

This procedure, called a transesophageal echocardiogram, uses a small probe passed into your esophagus to capture detailed images of your heart. The report provides information about your heart's structure and function.

14 services14 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 89145 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

$131.25 typical visit price

range $57.07 – $173.24

Typical copayment $32.81 (range $14.26 – $43.31)

Most-billed visit code 99204

Established Patient

$71.14 typical visit price

range $18.27 – $140.96

Typical copayment $17.78 (range $4.56 – $35.24)

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 12

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

SUE ANN WHITE NP-C

Nurse Practitioner