Laren Tan, M.D.
NPI 1821230467 · Pulmonary Disease Physician · Loma Linda, CA
Enrolled with Medicare as Practitioner - Critical Care (intensivists) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Laren Tan, M.D. is a Pulmonary Disease Physician provider in Loma Linda, CA (NPI 1821230467).
Provider details
- NPI number
- 1821230467
- Entity type
- Individual
- Primary specialty
- Pulmonary Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A113182 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
17 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
506 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) |
|---|---|---|
| Critical Care, First 30-74 Minutes99291 | 187 | $211 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 96 | $17 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 73 | $129 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 54 | $185 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 46 | $119 |
| Critical Care, Each Additional 30 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 24 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Fluticasone/Umeclidin/Vilanterbrand: Trelegy Ellipta | 245 | 48 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 196 | 74 |
| Montelukast Sodium | 143 | 53 |
| Prednisone | 124 | 52 |
| Azithromycin | 117 | 50 |
| Fluticasone/Vilanterolbrand: Breo Ellipta | 86 | 16 |
| Dupilumab |
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-03-27
- Last updated
- 2020-11-19
- Certified
- 2020-11-19
Frequently asked questions
- What is Laren Tan's NPI number?
- Laren Tan's National Provider Identifier (NPI) is 1821230467, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Laren Tan's specialty?
- Laren Tan is listed in the NPPES registry with a primary specialty of Pulmonary Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Laren Tan located?
- Laren Tan's practice location on file with NPPES is 11234 Anderson St # Mc-1516, Loma Linda, CA 92354-2804.
- What is Laren Tan's phone number?
- The practice phone number listed in the NPPES registry for Laren Tan is (909) 558-4908.
- Does Laren Tan accept Medicare?
- Laren Tan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Laren Tan's NPI active?
- Yes — Laren Tan's NPI (1821230467) is active in the NPPES registry as of the last update on 2020-11-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.