Doctor profile · Federal record

Dr. Thomas Eales, DO

Emergency Medicine Physician (CMS: Emergency Medicine) · Castro Valley, CA

  • NPI 1033647029
  • Accepts Medicare
  • MIPS 90.4 / 100 · 2023
  • 9 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
20103 Lake Chabot RD
Castro Valley, CA 945465305
(510) 727-3320
fax (317) 963-5394

Credentials & registration

NPPES · NUCC
NPI registered
June 2017 — 9 yrs on file
Profile last updated
January 21, 2022
Year of graduation
2017 — 9 yrs since
Specialty taxonomy
207P00000X — NUCC code
State license (1)
California #20A18321

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1033647029. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
1,260
Distinct HCPCS
6
Medicare allowed
$149,877
HCPCS Description Services Patients Avg allowed
99285 Emergency department visit with high level of medical decision making 500 469 $186
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 466 433 $9
99291 Critical care, first 30-74 minutes 130 129 $232
99284 Emergency department visit with moderate level of medical decision making 116 111 $129
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 31 30 $193
99283 Emergency department visit with low level of medical decision making 17 16 $76

In context: peer comparison

Among 9 peers in this city , average services per provider: 94. This provider delivers 13× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
154
Patients
151
Total drug cost
$1,664
Drug Type Claims Patients Total cost
Cephalexin Generic 29 27 $388
Ondansetron Odt (Ondansetron) Brand 23 23 $120
Ciprofloxacin Hcl Generic 19 19 $213
Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) Brand 17 17 $74
Prednisone Generic 17 17 $53
Albuterol Sulfate Hfa (Albuterol Sulfate) Brand 14 13 $364
Levofloxacin Generic 13 13 $136
Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) Brand 11 11 $205
Azithromycin Generic 11 11 $111

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Thomas Eales's medical specialty?
Dr. Thomas Eales practices Emergency Medicine Physician in Castro Valley, CA.
Where does Dr. Thomas Eales practice?
Dr. Thomas Eales practices at 20103 Lake Chabot RD, Castro Valley, CA 945465305. Office phone: 5107273320.
What is Dr. Thomas Eales's NPI?
Dr. Thomas Eales's National Provider Identifier (NPI) is 1033647029, issued by NPPES.
Does Dr. Thomas Eales accept Medicare assignment?
Yes. Dr. Thomas Eales accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Thomas Eales 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); Critical care (HCPCS 99291). Source: CMS Medicare Physician & Other Practitioners file.