Cristina Nguyen
NPI 1396278115 · Internal Medicine Physician · Pasadena, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Cristina Nguyen is a Internal Medicine Physician provider in Pasadena, CA (NPI 1396278115).
Provider details
- NPI number
- 1396278115
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
9 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
376 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 | 145 | $117 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 72 | $99 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 59 | $9 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 40 | $153 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 31 | $89 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 20 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 87 | 28 |
| Levothyroxine Sodium | 64 | 20 |
| Amlodipine Besylate | 56 | 21 |
| Rosuvastatin Calcium | 36 | 14 |
| Losartan Potassium | 26 | 11 |
| Irbesartan | 24 | — |
| Simvastatin | 23 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2017-04-08
- Last updated
- 2023-03-30
- Certified
- 2023-03-30
Frequently asked questions
- What is Cristina Nguyen's NPI number?
- Cristina Nguyen's National Provider Identifier (NPI) is 1396278115, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Cristina Nguyen's specialty?
- Cristina Nguyen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Cristina Nguyen located?
- Cristina Nguyen's practice location on file with NPPES is 625 S Fair Oaks Ave Ste 320, Pasadena, CA 91105-2674.
- What is Cristina Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Cristina Nguyen is (626) 396-2999.
- Does Cristina Nguyen accept Medicare?
- Cristina Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Cristina Nguyen's NPI active?
- Yes — Cristina Nguyen's NPI (1396278115) is active in the NPPES registry as of the last update on 2023-03-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.