DR. DAVID RYAN WILLIAMS MD
NPI 1528649134
Anesthesiology in Little Rock, AR
NPI Status: Active since April 15, 2021
Contact Information
4301 W MARKHAM ST
LITTLE ROCK, AR
ZIP 72205
Phone: (501) 686-8000
- Individual
- Male
- Anesthesiology
- PECOS Enrolled
About DAVID WILLIAMS
This page provides the complete NPI Profile along with additional information for David Williams, an anesthesiologist established in Little Rock, Arkansas with a medical specialization in Anesthesiology. The healthcare provider is registered in the NPI registry with number 1528649134 assigned on April 2021. The practitioner's primary taxonomy code is 207L00000X with license number E-19777 (AR). The provider is registered as an individual and his NPI record was last updated May 2026.
- NPI
- 1528649134
- Provider Name
- DR. DAVID RYAN WILLIAMS MD
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 4301 W MARKHAM ST LITTLE ROCK, AR 72205
- Location Phone
- (501) 686-8000
- Mailing Address
- 11001 EXECUTIVE CENTER DR STE 200 LITTLE ROCK, AR 72211
- Mailing Phone
- (501) 812-7215
- Mailing Fax
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 04-15-2021
- Last Update Date
- 05-13-2026
- Code Navigator
An anesthesiologist like David Williams 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
Secondary Locations
- 9601 Baptist Health Dr Ste 1A
Little Rock, AR 72205
(501) 202-2093
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.
- E-19777
- License State
- AR
- 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
David Williams 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: Durable Medical Equipment (DME) 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: No
Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes
Eligible to Order or Refer a Home Health Agency (HHA): No
Eligible to Order or Refer Power Mobility Devices: Yes
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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 1528649134, 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.
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.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
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.
Other Providers at the Same Location
The following 20 providers are registered at the same or a nearby location.
LITTLE ROCK, AR 72205
LITTLE ROCK, AR 72205
LITTLE ROCK, AR 72205
LITTLE ROCK, AR 72205
LITTLE ROCK, AR 72205
LITTLE ROCK, AR 72205
LITTLE ROCK, AR 72205
LITTLE ROCK, AR 72205
LITTLE ROCK, AR 72205
LITTLE ROCK, AR 72205
LITTLE ROCK, AR 72205
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1528649134, enumerated as an "individual" on April 15, 2021.
The provider is located at 4301 W MARKHAM ST LITTLE ROCK, AR 72205 and the phone number is (501) 686-8000.
Anesthesiology with taxonomy code 207L00000X.
