Helen Huynh, D.O
NPI 1588820518 · Obstetrics & Gynecology Physician · Rosemead, CA
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Helen Huynh, D.O is a Obstetrics & Gynecology Physician provider in Rosemead, CA (NPI 1588820518).
Provider details
- NPI number
- 1588820518
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O
- Sex
- Female
- Sole proprietor
- Yes
- License
- 20A10923 (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
17 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
1,431 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 511 | $139 |
| Screening Papanicolaou Smear; Obtaining, Preparing and Conveyance of Cervical Or Vaginal Smear to LaboratoryQ0091 | 226 | $50 |
| Cervical Or Vaginal Cancer Screening; Pelvic and Clinical Breast ExaminationG0101 | 225 | $43 |
| Complete Ultrasound Scan of Pelvis76856 | 126 | $119 |
| Ultrasound Scan of Uterus, Ovaries, Tubes, Cervix and Pelvic Area Through Vagina76830 | 106 | $136 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Estradiol | 45 | 29 |
| Ibuprofen | 40 | 36 |
| Clotrimazole/Betamethasone Dipbrand: Clotrimazole-Betamethasone | 37 | 20 |
| Metronidazole | 32 | 28 |
| Acetaminophen With Codeinebrand: Acetaminophen-Codeine | 28 | 27 |
| Fluconazole | 28 | 23 |
| Acyclovir | 24 | — |
| Oxybutynin Chloride |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$28 across 1 record (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
- 2008-07-29
- Last updated
- 2015-10-13
Frequently asked questions
- What is Helen Huynh's NPI number?
- Helen Huynh's National Provider Identifier (NPI) is 1588820518, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Helen Huynh's specialty?
- Helen Huynh is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Helen Huynh located?
- Helen Huynh's practice location on file with NPPES is 3006 San Gabriel Blvd, Rosemead, CA 91770-2536.
- What is Helen Huynh's phone number?
- The practice phone number listed in the NPPES registry for Helen Huynh is (626) 779-8900.
- Does Helen Huynh accept Medicare?
- Helen Huynh is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Helen Huynh's NPI active?
- Yes — Helen Huynh's NPI (1588820518) is active in the NPPES registry as of the last update on 2015-10-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.