DR. WILLIAM JOHN SHEARON MD
NPI 1801782644
Anesthesiology in Columbia, MO

NPI Status: Active since June 17, 2025

Contact Information

1 HOSPITAL DR
COLUMBIA, MO
ZIP 65212
Phone: (573) 882-2568
Fax: (573) 882-2226

NPI Profile Information
Primary Taxonomy
Medicare Participation & PECOS Status
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Male
Anesthesiology
PECOS Enrolled

About WILLIAM SHEARON

This page provides the complete NPI Profile along with additional information for William Shearon, an anesthesiologist established in Columbia, Missouri with a medical specialization in Anesthesiology. The healthcare provider is registered in the NPI registry with number 1801782644 assigned on June 2025. The practitioner's primary taxonomy code is 207L00000X with license number 2025019521 (MO). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI: 1801782644
Provider Name: DR. WILLIAM JOHN SHEARON MD
Gender: Male
Entity Type: Individual
Location Address: 1 HOSPITAL DR COLUMBIA, MO 65212
Location Phone: (573) 882-2568
Location Fax: (573) 882-2226
Mailing Address: 1 HOSPITAL DR COLUMBIA, MO 65212
Mailing Phone: (573) 882-2568
Mailing Fax: (573) 882-2226
Is Sole Proprietor?: Yes
Enumeration Date: 06-17-2025
Last Update Date: 06-17-2025
Code Navigator

An anesthesiologist like William Shearon manages the care of surgical patients and pain relief through drug administration that reduces or eliminates pain during an operation, medical procedure or during labor and delivery of babies. During surgical procedures anesthesiologists are responsible for adjusting the amount of anesthetic, monitoring the patient's heart rate, body temperature, blood pressure and breathing.

Location Map

Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification: Anesthesiology
Taxonomy Code: 207L00000X
Type: Allopathic & Osteopathic Physicians
License No.: 2025019521
License State: MO
Taxonomy Description: An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.

Medicare Participation & PECOS Enrollment Status

William Shearon is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

Is the provider registered in PECOS? Yes
Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes
Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes
Eligible to Order or Refer a Home Health Agency (HHA): Yes
Eligible to Order or Refer Power Mobility Devices: Yes

NPI NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1801782644, we treat the final digit (4) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 66. The final step is to find the difference between that total and the next multiple of ten (70 - 66 = 4).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 0

Pos 4

Unchanged

Pos 5

Doubled → 14 → 1 + 4

Pos 6

Unchanged

Pos 7

Doubled → 4

Pos 8

Unchanged

Pos 9

Doubled → 8

Check

Target digit

Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 0 → 0 7 → 14 → 5 2 → 4 4 → 8

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 8 + 0 + 1 + 1 + 4 + 8 + 4 + 6 + 8 + 24 = 66

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 66 is 70. The difference is the calculated check digit.

70 - 66 = 4

This NPI is valid

The calculated check digit is 4, which matches the last digit of 1801782644.