Linh Dan Nguyen, M.D.
NPI 1619932506 · Specialist · Fountain Valley, CA
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Linh Dan Nguyen, M.D. is a Specialist provider in Fountain Valley, CA (NPI 1619932506).
Provider details
- NPI number
- 1619932506
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- G80266 (CA)
Specialties & taxonomies
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 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
378 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 87 | $93 |
| Cervical Or Vaginal Cancer Screening; Pelvic and Clinical Breast ExaminationG0101 | 82 | $40 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 74 | $133 |
| Screening Papanicolaou Smear; Obtaining, Preparing and Conveyance of Cervical Or Vaginal Smear to LaboratoryQ0091 | 50 | $47 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 29 | $59 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 23 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Progesterone, Micronizedbrand: Progesterone | 167 | 44 |
| Estradiol | 79 | 28 |
| Estradiolbrand: Estradiol (twice Weekly) | 46 | 15 |
| Levothyroxine Sodium | 45 | 12 |
| Alprazolam | 42 | 12 |
| Thyroid,porkbrand: NP Thyroid | 38 | 11 |
| Liothyronine Sodium | 27 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$787 across 37 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
- 2006-04-20
- Last updated
- 2012-05-11
Frequently asked questions
- What is Linh Dan Nguyen's NPI number?
- Linh Dan Nguyen's National Provider Identifier (NPI) is 1619932506, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Linh Dan Nguyen's specialty?
- Linh Dan Nguyen is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Linh Dan Nguyen located?
- Linh Dan Nguyen's practice location on file with NPPES is 9940 Talbert Ave, Fountain Valley, CA 92708-5153.
- What is Linh Dan Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Linh Dan Nguyen is (714) 378-5606.
- Does Linh Dan Nguyen accept Medicare?
- Linh Dan Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Linh Dan Nguyen's NPI active?
- Yes — Linh Dan Nguyen's NPI (1619932506) is active in the NPPES registry as of the last update on 2012-05-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.