Kevin Khai Tieu, MD
NPI 1154397768 · Obstetrics & Gynecology Physician · Fountain Valley, CA
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kevin Khai Tieu, MD is a Obstetrics & Gynecology Physician provider in Fountain Valley, CA (NPI 1154397768).
Provider details
- NPI number
- 1154397768
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A77268 (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
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
565 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 | 140 | $94 |
| Limited Ultrasound Scan of Pelvis76857 | 99 | $52 |
| Pelvic Exam99459 | 69 | $25 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 62 | $132 |
| Cervical Or Vaginal Cancer Screening; Pelvic and Clinical Breast ExaminationG0101 | 60 | $40 |
| Screening Papanicolaou Smear; Obtaining, Preparing and Conveyance of Cervical Or Vaginal Smear to LaboratoryQ0091 | 46 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Estradiol | 257 | 144 |
| Estrogens, Conjugatedbrand: Premarin | 48 | 22 |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 38 | 35 |
| Clotrimazole/Betamethasone Dipbrand: Clotrimazole-Betamethasone | 37 | 28 |
| Estradiolbrand: Imvexxy | 31 | — |
| Misoprostol | 27 | 26 |
| Vibegronbrand: Gemtesa | 17 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$8,891 across 68 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
- 2006-02-23
- Last updated
- 2019-05-30
Frequently asked questions
- What is Kevin Khai Tieu's NPI number?
- Kevin Khai Tieu's National Provider Identifier (NPI) is 1154397768, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kevin Khai Tieu's specialty?
- Kevin Khai Tieu is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Kevin Khai Tieu located?
- Kevin Khai Tieu's practice location on file with NPPES is 16543 Brookhurst St, Fountain Valley, CA 92708-2343.
- What is Kevin Khai Tieu's phone number?
- The practice phone number listed in the NPPES registry for Kevin Khai Tieu is (714) 418-9749.
- Does Kevin Khai Tieu accept Medicare?
- Kevin Khai Tieu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kevin Khai Tieu's NPI active?
- Yes — Kevin Khai Tieu's NPI (1154397768) is active in the NPPES registry as of the last update on 2019-05-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.