William Clark, DO
William Clark, DO is an Anesthesiology Physician in Sparks, NV, registered under NPI 1003083700.
Getting there
Here is what surrounds this office in Sparks, based on OpenStreetMap data collected Sep 4, 2026. Parking is available about 0.37 mi away. If you arrive early, there is a coffee shop 0.36 mi away.
Getting here and what is nearby
Restaurant Bully's Sports Bar & Grill 574 ft ~3 min
Restaurant SK Noodle 612 ft ~3 min
Restaurant Papa Murphy's 638 ft ~3 min
Grocery Raley's 707 ft ~3 min
2895 North Mccarran Boulevard, Sparks 89431
Coffee Starbucks 0.20 mi ~5 min
Gas station Chevron 0.21 mi ~5 min
Grocery Scolari's 0.28 mi ~6 min
Coffee The Human Bean 0.36 mi ~8 min
800 Holman Way, Sparks 89431
Parking 0.36 mi ~8 min
Parking 0.36 mi ~8 min
Parking 0.37 mi ~8 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| DO1419 | NV | Anesthesiology Physician primary |
This provider holds licence DO1419 issued in NV. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Anesthesiology covers
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. NUCC Health Care Provider Taxonomy, code 207L00000X
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1003083700 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 12, 2008 |
| Last updated | Sep 23, 2021 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | DO |
| Practice address |
975 ROBERTA LN STE 101B Sparks, NV 89431 (775) 870-1545 Fax (844) 965-9017 |
| Mailing address |
975 ROBERTA LN STE 101B Sparks, NV 89431 |
| Other identifiers |
pending
· Medicaid (NV) |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 0 | 0 | 3 | 0 | 8 | 3 | 7 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 8 | 6 | 7 | 0 |
Sum = 50 · next multiple of 10 = 50 · check digit = 0 · actual last digit = 0
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.