Hau Tan, M.D.
NPI 1912907726 · Internal Medicine Physician · La Mesa, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Hau Tan, M.D. is a Internal Medicine Physician provider in La Mesa, CA (NPI 1912907726).
Provider details
- NPI number
- 1912907726
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A63428 (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
20 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
1,396 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) |
|---|---|---|
| Residence Visit for Established Patient With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 40 Minutes99349 | 685 | $125 |
| Insertion of Needle Into Vein (3 Years Or Older)36410 | 162 | $18 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 120 | $130 |
| Administration of Influenza Virus VaccineG0008 | 114 | $34 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 93 | $97 |
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 159 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 1,156 | 131 |
| Levothyroxine Sodium | 734 | 69 |
| Amlodipine Besylate | 638 | 77 |
| Losartan Potassium | 554 | 62 |
| Metformin Hcl | 474 | 55 |
| Tamsulosin Hcl | 433 | 53 |
| Potassium Chloride |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-07-22
- Last updated
- 2022-11-23
- Certified
- 2022-11-23
Frequently asked questions
- What is Hau Tan's NPI number?
- Hau Tan's National Provider Identifier (NPI) is 1912907726, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Hau Tan's specialty?
- Hau Tan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Hau Tan located?
- Hau Tan's practice location on file with NPPES is 7871 University Ave, La Mesa, CA 91942-0471.
- What is Hau Tan's phone number?
- The practice phone number listed in the NPPES registry for Hau Tan is (619) 287-8270.
- Does Hau Tan accept Medicare?
- Hau Tan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Hau Tan's NPI active?
- Yes — Hau Tan's NPI (1912907726) is active in the NPPES registry as of the last update on 2022-11-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.