Thao Phan, M.D.
NPI 1619113503 · Family Medicine Physician · Costa Mesa, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thao Phan, M.D. is a Family Medicine Physician provider in Costa Mesa, CA (NPI 1619113503).
Provider details
- NPI number
- 1619113503
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A101844 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
17 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
348 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 | 232 | $138 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 37 | $99 |
| Administration of Influenza Virus VaccineG0008 | 29 | $35 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 24 | $140 |
| Annual Wellness Visit; Includes a Personalized Prevention Plan of Service (pps), Initial VisitG0438 | 15 | $178 |
| Administration of Pneumococcal VaccineG0009 | 11 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 60 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 288 | 98 |
| Rosuvastatin Calcium | 248 | 89 |
| Losartan Potassium | 185 | 64 |
| Amlodipine Besylate | 171 | 59 |
| Levothyroxine Sodium | 155 | 48 |
| Metformin Hcl | 130 | 44 |
| Alendronate Sodium |
Practice location
Mailing address
Additional practice locations (1)
- 18785 Brookhurst StSuite 200Fountain Valley, CA 92708-7300Phone: (714) 378-5330Fax: (714) 378-5320
Registry dates
- Enumerated
- 2008-12-23
- Last updated
- 2019-01-10
Frequently asked questions
- What is Thao Phan's NPI number?
- Thao Phan's National Provider Identifier (NPI) is 1619113503, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thao Phan's specialty?
- Thao Phan is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Thao Phan located?
- Thao Phan's practice location on file with NPPES is 1170 Baker St Ste H1, Costa Mesa, CA 92626.
- What is Thao Phan's phone number?
- The practice phone number listed in the NPPES registry for Thao Phan is (949) 791-3250.
- Does Thao Phan accept Medicare?
- Thao Phan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thao Phan's NPI active?
- Yes — Thao Phan's NPI (1619113503) is active in the NPPES registry as of the last update on 2019-01-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.