Thien-Nhan Nguyen, FNP-C
NPI 1679244008 · Family Nurse Practitioner · Palo Alto, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thien-Nhan Nguyen, FNP-C is a Family Nurse Practitioner provider in Palo Alto, CA (NPI 1679244008).
Provider details
- NPI number
- 1679244008
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP-C
- Sex
- Male
- Sole proprietor
- Yes
- License
- 95053992 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Nursing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
4 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,341 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) |
|---|---|---|
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308 | 598 | $69 |
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, at Least 10 Minutes99307 | 410 | $37 |
| Initial Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, 50 Minutes Or More99306 | 132 | $164 |
| Nursing Facility Discharge Day Management, 30 Minutes Or Less99315 | 114 | $74 |
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 87 | $99 |
Typical Medicare-allowed amounts for these services range $37–$164 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Omeprazole | 30 |
| Losartan Potassium | 29 |
| Gabapentin | 25 |
| Diclofenac Sodium | 21 |
| Levothyroxine Sodium | 21 |
| Atorvastatin Calcium | 21 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 19 |
| Lisinopril | 15 |
| Oxycodone Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2021-09-24
- Last updated
- 2021-09-24
- Certified
- 2021-09-24
Frequently asked questions
- What is Thien-Nhan Nguyen's NPI number?
- Thien-Nhan Nguyen's National Provider Identifier (NPI) is 1679244008, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thien-Nhan Nguyen's specialty?
- Thien-Nhan Nguyen is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Thien-Nhan Nguyen located?
- Thien-Nhan Nguyen's practice location on file with NPPES is 805 El Camino Real Ste a, Palo Alto, CA 94301-2315.
- What is Thien-Nhan Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Thien-Nhan Nguyen is (650) 328-1676.
- Does Thien-Nhan Nguyen accept Medicare?
- Thien-Nhan Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thien-Nhan Nguyen's NPI active?
- Yes — Thien-Nhan Nguyen's NPI (1679244008) is active in the NPPES registry as of the last update on 2021-09-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.