Doctor profile · Federal record

Dr. Benedict Ancock, M.D.

Cardiovascular Disease Physician (CMS: Cardiovascular Disease (Cardiology)) · Larkspur, CA

  • NPI 1578847844
  • 21 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
2 Bon Air RD Ste 100
Larkspur, CA 949391144
(415) 927-0666
fax (415) 927-6168

Credentials & registration

NPPES · NUCC
NPI registered
October 2011 — 15 yrs on file
Profile last updated
July 19, 2021
Year of graduation
2005 — 21 yrs since
Specialty taxonomy
207RC0000X — NUCC code
State license (1)
California #A118391

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1578847844. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
4,996
Distinct HCPCS
10
Medicare allowed
$482,771
HCPCS Description Services Patients Avg allowed
99214 Established patient office or other outpatient visit, 30-39 minutes 1,151 680 $144
G0423 Intensive cardiac rehabilitation; with or without continuous ecg monitoring; without exercise, per session 709 20 $136
93306 Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 451 445 $73
93793 Anticoagulant management of patient taking warfarin 416 25 $13
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 267 127 $127
93798 Outpatient heart rehabilitation with electrocardiogram (ecg) monitoring, quality health care professional services 259 63 $30
93000 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 254 236 $17
G0422 Intensive cardiac rehabilitation; with or without continuous ecg monitoring with exercise, per session 238 20 $137
93306 Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 197 187 $73
93248 Heart rhythm review and interpretation of continous external ekg over 8-15 days 95 94 $28

In context: peer comparison

Among 7 peers in this city , average services per provider: 132. This provider delivers 38× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$1,138
Transactions
16
Manufacturers
6
Payer (manufacturer) Industry Txns Amount
Edwards Lifesciences Corporation 8 $733.15
Mirum Pharmaceuticals, Inc. 1 $150.75
Boston Scientific Corporation 3 $109.94
HEARTFLOW, INC. 2 $104.95
Abbott Laboratories 1 $23.36
CARDIVA MEDICAL, INC. 1 $15.58

By nature of payment

Travel and Lodging
$690
Food and Beverage
$448

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
3,849
Patients
1,271
Total drug cost
$794,108
Drug Type Claims Patients Total cost
Atorvastatin Calcium Generic 628 209 $9,434
Metoprolol Succinate Generic 507 153 $11,035
Amlodipine Besylate Generic 473 153 $4,659
Eliquis (Apixaban) Brand 368 119 $525,885
Rosuvastatin Calcium Generic 338 114 $9,280
Losartan Potassium Generic 255 93 $4,619
Ezetimibe Generic 225 71 $11,624
Xarelto (Rivaroxaban) Brand 178 51 $205,598
Lisinopril Generic 167 57 $2,125
Furosemide Generic 160 51 $1,019

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Benedict Ancock's medical specialty?
Dr. Benedict Ancock practices Cardiovascular Disease Physician in Larkspur, CA.
Where does Dr. Benedict Ancock practice?
Dr. Benedict Ancock practices at 2 Bon Air RD Ste 100, Larkspur, CA 949391144. Office phone: 4159270666.
What is Dr. Benedict Ancock's NPI?
Dr. Benedict Ancock's National Provider Identifier (NPI) is 1578847844, issued by NPPES.
Does Dr. Benedict Ancock accept Medicare assignment?
Dr. Benedict Ancock does not accept Medicare assignment for all services. Patients may be billed amounts beyond Medicare-allowed charges.
What procedures does Dr. Benedict Ancock commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Intensive cardiac rehabilitation; with or without continuous ecg monitoring; without exercise (HCPCS G0423); Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (HCPCS 93306). Source: CMS Medicare Physician & Other Practitioners file.