Doctor profile · Federal record
Dr. Errol Williams, M.D.
Cardiovascular Disease Physician (CMS: Cardiovascular Disease (Cardiology)) · Ontario, OH
- NPI 1366456519
- Accepts Medicare
- MIPS 74.0 / 100 · 2023
- 36 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
715 Richland Mall
Ontario, OH 449063802
(419) 462-4600 - Additional location
-
629 N Sandusky Ave
Bucyrus, OH 448201821 - Mailing address
-
700 N Columbus St
Crestline, OH 448271455
Credentials & registration
- NPI registered
- July 2006 — 20 yrs on file
- Profile last updated
- January 8, 2021
- Year of graduation
- 1990 — 36 yrs since
- Specialty taxonomy
- 207RC0000X — NUCC code
- State license (1)
- Ohio #35.126917
- Medicaid
- OH #0142866
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1366456519. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,567
Distinct HCPCS
10
Medicare allowed
$93,570
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
93010 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 559 | 387 | $8 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 521 | 214 | $95 | |
93306 |
Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | 200 | 197 | $66 | |
93351 |
Ultrasound of heart with continuous electrocardiogram (ecg) during rest, exercise and/or drug induced stress with review and report | 68 | 68 | $80 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 54 | 51 | $169 | |
93352 |
Injection of x-ray contrast during ultrasound of heart | 39 | 39 | $32 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 26 | 26 | $130 | |
93308 |
Ultrasound of heart, follow-up | 24 | 23 | $24 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 23 | 19 | $77 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 22 | 16 | $116 |
In context: peer comparison
Among 1 peers in Ontario Cardiovascular Disease Physician, average services per provider: 130. This provider delivers 12× the peer median.Open Payments
Industry payments received
All-time total
$14
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Hologic Sales and Service, LLC | 1 | $14.18 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
2,924
Patients
852
Total drug cost
$338,211
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Metoprolol Succinate | Generic | 392 | 104 | $10,162 |
| Eliquis (Apixaban) | Brand | 224 | 63 | $294,254 |
| Atorvastatin Calcium | Generic | 221 | 69 | $2,566 |
| Lisinopril | Generic | 211 | 70 | $1,251 |
| Losartan Potassium | Generic | 204 | 60 | $2,863 |
| Digoxin | Generic | 194 | 52 | $5,388 |
| Amlodipine Besylate | Generic | 191 | 60 | $1,315 |
| Hydralazine Hcl | Generic | 191 | 54 | $4,695 |
| Carvedilol | Generic | 183 | 50 | $2,494 |
| Metoprolol Tartrate | Generic | 175 | 52 | $1,314 |
Frequently asked questions
What is Dr. Errol Williams's medical specialty?
Dr. Errol Williams practices Cardiovascular Disease Physician in Ontario, OH.
Where does Dr. Errol Williams practice?
Dr. Errol Williams practices at 715 Richland Mall, Ontario, OH 449063802. Office phone: 4194624600.
What is Dr. Errol Williams's NPI?
Dr. Errol Williams's National Provider Identifier (NPI) is 1366456519, issued by NPPES.
Does Dr. Errol Williams accept Medicare assignment?
Yes. Dr. Errol Williams accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Errol Williams commonly perform?
Top Medicare-reported procedures in 2023: Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (HCPCS 93010); Established patient office or other outpatient visit (HCPCS 99214); Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (HCPCS 93306). Source: CMS Medicare Physician & Other Practitioners file.