Doctor profile · Federal record

Dr. CO PHAM, MD

Obstetrics & Gynecology Physician (CMS: OBSTETRICS/GYNECOLOGY) · WESTMINSTER, CA

  • NPI 1558392159
  • Accepts Medicare
  • 56 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
10362 BOLSA AVE, BOLSA MEDICAL GROUP
WESTMINSTER, CA 926836763
(714) 531-2091
fax (714) 531-1403

Credentials & registration

NPPES · NUCC
NPI registered
July 2006 — 20 yrs on file
Profile last updated
December 12, 2011
Year of graduation
1970 — 56 yrs since
Specialty taxonomy
207V00000X — NUCC code
State license (1)
California #A34091
Medicaid
CA #00A340910

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1558392159. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
607
Distinct HCPCS
10
Medicare allowed
$54,756
HCPCS Description Services Patients Avg allowed
99490 Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month 318 30 $68
99214 Established patient office or other outpatient visit, 30-39 minutes 88 42 $139
77067 Screening mammography 41 41 $147
77080 Dxa bone density measurement of hip, pelvis, spine 27 27 $44
76641 Complete ultrasound scan of 1 breast 16 16 $175
90677 Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use 16 16 $283
G0008 Administration of influenza virus vaccine 16 16 $33
76700 Complete ultrasound scan of abdomen 15 14 $135
G0009 Administration of pneumococcal vaccine 15 15 $33
G0101 Cervical or vaginal cancer screening; pelvic and clinical breast examination 15 15 $43

In context: peer comparison

Among 3 peers in this city , average services per provider: 46. This provider delivers 13× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$164
Transactions
4
Manufacturers
3
Payer (manufacturer) Industry Txns Amount
Astellas Pharma US Inc 1 $99.99
Amgen Inc. 2 $49.13
Exact Sciences Corporation 1 $15.04

By nature of payment

Education
$100
Food and Beverage
$64

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
1,268
Patients
376
Total drug cost
$107,897
Drug Type Claims Patients Total cost
Rosuvastatin Calcium Generic 163 50 $3,778
Metformin Hcl Generic 130 39 $2,304
Vascepa (Icosapent Ethyl) Brand 127 22 $66,012
Amlodipine Besylate Generic 101 35 $1,445
Ezetimibe Generic 100 32 $3,680
Alendronate Sodium Generic 95 30 $1,543
Amlodipine-Valsartan (Amlodipine Besylate/Valsartan) Brand 74 17 $5,661
Estradiol Generic 73 34 $11,534
Raloxifene Hcl Generic 72 20 $5,965
Atorvastatin Calcium Generic 66 19 $845