Alan Lo, MD
NPI 1982683637 · Internal Medicine Physician · Laguna Hills, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alan Lo, MD is a Internal Medicine Physician provider in Laguna Hills, CA (NPI 1982683637).
Provider details
- NPI number
- 1982683637
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G73266 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
3,472 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 1,516 | $69 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 573 | $142 |
| Annual Alcohol Misuse Screening, 5 to 15 MinutesG0442 | 276 | $22 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 274 | $145 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 265 | $22 |
| Advance Care Planning, First 30 Minutes99497 | 167 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 170 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 856 | 230 |
| Levothyroxine Sodium | 479 | 136 |
| Rosuvastatin Calcium | 435 | 123 |
| Lisinopril | 374 | 105 |
| Amlodipine Besylate | 345 | 100 |
| Metformin Hcl | 285 | 83 |
| Alprazolam |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,178 across 56 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-01-11
- Last updated
- 2011-05-31
Frequently asked questions
- What is Alan Lo's NPI number?
- Alan Lo's National Provider Identifier (NPI) is 1982683637, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alan Lo's specialty?
- Alan Lo is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Alan Lo located?
- Alan Lo's practice location on file with NPPES is 25401 Cabot Rd, Laguna Hills, CA 92653-5524.
- What is Alan Lo's phone number?
- The practice phone number listed in the NPPES registry for Alan Lo is (949) 768-4850.
- Does Alan Lo accept Medicare?
- Alan Lo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alan Lo's NPI active?
- Yes — Alan Lo's NPI (1982683637) is active in the NPPES registry as of the last update on 2011-05-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.