Doctor profile · Federal record

Dr. William Downes, MD

Emergency Medicine Physician (CMS: Emergency Medicine) · Loma Linda, CA

  • NPI 1912494808
  • Accepts Medicare
  • MIPS 76.4 / 100 · 2023
  • 8 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
11234 Anderson St, A890
Loma Linda, CA 923542804
(909) 558-4085
Mailing address
11234 Anderson Street, Gme Office Westerly Suite C, L
Loma Linda, CA 923542804

Credentials & registration

NPPES · NUCC
NPI registered
April 2018 — 8 yrs on file
Profile last updated
August 12, 2021
Year of graduation
2018 — 8 yrs since
Specialty taxonomy
207P00000X — NUCC code
State license (1)
California #A163443

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1912494808. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
246
Distinct HCPCS
5
Medicare allowed
$29,695
HCPCS Description Services Patients Avg allowed
99285 Emergency department visit with high level of medical decision making 101 101 $178
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 64 61 $8
99284 Emergency department visit with moderate level of medical decision making 32 30 $122
99214 Established patient office or other outpatient visit, 30-39 minutes 28 28 $99
99291 Critical care, first 30-74 minutes 21 21 $216

In context: peer comparison

Among 55 peers in this city , average services per provider: 73. This provider delivers 3.4× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
29
Patients
29
Total drug cost
$198
Drug Type Claims Patients Total cost
Methocarbamol Generic 16 16 $100
Cephalexin Generic 13 13 $98

Frequently asked questions

Auto-generated from federal data
What is Dr. William Downes's medical specialty?
Dr. William Downes practices Emergency Medicine Physician in Loma Linda, CA.
Where does Dr. William Downes practice?
Dr. William Downes practices at 11234 Anderson St, A890, Loma Linda, CA 923542804. Office phone: 9095584085.
What is Dr. William Downes's NPI?
Dr. William Downes's National Provider Identifier (NPI) is 1912494808, issued by NPPES.
Does Dr. William Downes accept Medicare assignment?
Yes. Dr. William Downes accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. William Downes commonly perform?
Top Medicare-reported procedures in 2023: Emergency department visit with high level of medical decision making (HCPCS 99285); Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (HCPCS 93010); Emergency department visit with moderate level of medical decision making (HCPCS 99284). Source: CMS Medicare Physician & Other Practitioners file.