Jan Nguyen, D.O.
NPI 1477915452 · Internal Medicine Physician · Long Beach, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jan Nguyen, D.O. is a Internal Medicine Physician provider in Long Beach, CA (NPI 1477915452).
Provider details
- NPI number
- 1477915452
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Female
- Sole proprietor
- No
- License
- 20A17105 (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
10 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
175 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 50 | $98 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 45 | $139 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 22 | $140 |
| Office Or Other Outpatient Visit for the Evaluation and Management of Established Patient That May Not Require Presence of Healthcare Professional99211 | 17 | $26 |
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 | 15 | $99 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 75 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 207 | 80 |
| Amlodipine Besylate | 163 | 65 |
| Rosuvastatin Calcium | 138 | 50 |
| Levothyroxine Sodium | 120 | 38 |
| Gabapentin | 108 | 33 |
| Famotidine | 103 | 40 |
| Alendronate Sodium | 82 |
Practice location
Mailing address
Additional practice locations (1)
- 4401 Atlantic Ave Ste 300Long Beach, CA 90807-2249Phone: (562) 481-3500
Registry dates
- Enumerated
- 2016-03-28
- Last updated
- 2026-01-26
- Certified
- 2026-01-26
Frequently asked questions
- What is Jan Nguyen's NPI number?
- Jan Nguyen's National Provider Identifier (NPI) is 1477915452, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jan Nguyen's specialty?
- Jan Nguyen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jan Nguyen located?
- Jan Nguyen's practice location on file with NPPES is 2777 Pacific Ave Ste E, Long Beach, CA 90806-2626.
- What is Jan Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Jan Nguyen is (562) 426-6571.
- Does Jan Nguyen accept Medicare?
- Jan Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jan Nguyen's NPI active?
- Yes — Jan Nguyen's NPI (1477915452) is active in the NPPES registry as of the last update on 2026-01-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.