Jun Liu, MD
NPI 1770669319 · Internal Medicine Physician · Irvine, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jun Liu, MD is a Internal Medicine Physician provider in Irvine, CA (NPI 1770669319).
Provider details
- NPI number
- 1770669319
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A79444 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 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
661 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 Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 259 | $122 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 185 | $81 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 117 | $119 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 62 | $135 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 38 | $178 |
Typical Medicare-allowed amounts for these services range $81–$178 (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 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Warfarin Sodium | 30 | — |
| Tamsulosin Hcl | 29 | — |
| Montelukast Sodium | 26 | — |
| Lisinopril | 20 | — |
| Prednisone | 19 | 17 |
| Levothyroxine Sodium | 18 | — |
| Rivaroxaban |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-27
- Last updated
- 2024-05-08
- Certified
- 2024-01-25
Frequently asked questions
- What is Jun Liu's NPI number?
- Jun Liu's National Provider Identifier (NPI) is 1770669319, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jun Liu's specialty?
- Jun Liu is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jun Liu located?
- Jun Liu's practice location on file with NPPES is 11 Technology Dr, Irvine, CA 92618-2302.
- What is Jun Liu's phone number?
- The practice phone number listed in the NPPES registry for Jun Liu is (855) 206-6764.
- Does Jun Liu accept Medicare?
- Jun Liu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jun Liu's NPI active?
- Yes — Jun Liu's NPI (1770669319) is active in the NPPES registry as of the last update on 2024-05-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.