Hairan Zhu
NPI 1336670611 · Internal Medicine Physician · La Mesa, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Hairan Zhu is a Internal Medicine Physician provider in La Mesa, CA (NPI 1336670611).
Provider details
- NPI number
- 1336670611
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- A157525 (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
9 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
17 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 | 17 | $138 |
Typical Medicare-allowed amounts for these services range $138–$138 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote 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 · 105 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 446 | 184 |
| Amlodipine Besylate | 262 | 112 |
| Losartan Potassium | 218 | 94 |
| Levothyroxine Sodium | 192 | 81 |
| Omeprazole | 172 | 90 |
| Lisinopril | 161 | 73 |
| Rosuvastatin Calcium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2017-03-27
- Last updated
- 2021-11-29
- Certified
- 2020-09-08
Frequently asked questions
- What is Hairan Zhu's NPI number?
- Hairan Zhu's National Provider Identifier (NPI) is 1336670611, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Hairan Zhu's specialty?
- Hairan Zhu is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Hairan Zhu located?
- Hairan Zhu's practice location on file with NPPES is 3875 Avocado Blvd, La Mesa, CA 91941-7303.
- What is Hairan Zhu's phone number?
- The practice phone number listed in the NPPES registry for Hairan Zhu is (619) 851-0992.
- Does Hairan Zhu accept Medicare?
- Hairan Zhu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Hairan Zhu's NPI active?
- Yes — Hairan Zhu's NPI (1336670611) is active in the NPPES registry as of the last update on 2021-11-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.