Co Pham, MD
NPI 1558392159 · Obstetrics & Gynecology Physician · Westminster, CA
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Co Pham, MD is a Obstetrics & Gynecology Physician provider in Westminster, CA (NPI 1558392159).
Provider details
- NPI number
- 1558392159
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A34091 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
566 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 286 | $67 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 89 | $139 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 31 | $21 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 29 | $140 |
| Screening Mammography77067 | 27 | $145 |
| Dxa Bone Density Measurement of Hip, Pelvis, Spine |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 77 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Rosuvastatin Calcium | 189 | 52 |
| Metformin Hcl | 169 | 48 |
| Icosapent Ethylbrand: Vascepa | 139 | 25 |
| Amlodipine Besylate | 98 | 30 |
| Alendronate Sodium | 87 | 24 |
| Ezetimibe | 85 | 27 |
| Estradiol | 76 | 36 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$164 across 4 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-05
- Last updated
- 2011-12-12
Frequently asked questions
- What is Co Pham's NPI number?
- Co Pham's National Provider Identifier (NPI) is 1558392159, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Co Pham's specialty?
- Co Pham is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Co Pham located?
- Co Pham's practice location on file with NPPES is 10362 Bolsa Ave, Westminster, CA 92683-6763.
- What is Co Pham's phone number?
- The practice phone number listed in the NPPES registry for Co Pham is (714) 531-2091.
- Does Co Pham accept Medicare?
- Co Pham is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Co Pham's NPI active?
- Yes — Co Pham's NPI (1558392159) is active in the NPPES registry as of the last update on 2011-12-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.