Siang Lo, DO
NPI 1821146606 · Family Medicine Physician · Pacific Grove, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Siang Lo, DO is a Family Medicine Physician provider in Pacific Grove, CA (NPI 1821146606).
Provider details
- NPI number
- 1821146606
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- 20A6730 (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
19 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
2,050 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 752 | $127 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 255 | $91 |
| Osteopathic Manipulative Treatment, 5-6 Body Regions98927 | 248 | $58 |
| 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 | 219 | $16 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 133 | $14 |
| Administration of Influenza Virus Vaccine |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 78 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 191 | 37 |
| Losartan Potassium | 86 | 24 |
| Gabapentin | 79 | 20 |
| Amlodipine Besylate | 78 | 17 |
| Rosuvastatin Calcium | 76 | 20 |
| Atorvastatin Calcium | 63 | 18 |
| Furosemide |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$40 across 2 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
- 2007-01-08
- Last updated
- 2020-09-30
- Certified
- 2020-09-30
Frequently asked questions
- What is Siang Lo's NPI number?
- Siang Lo's National Provider Identifier (NPI) is 1821146606, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Siang Lo's specialty?
- Siang Lo is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Siang Lo located?
- Siang Lo's practice location on file with NPPES is 621 Forest Ave, Pacific Grove, CA 93950-4264.
- What is Siang Lo's phone number?
- The practice phone number listed in the NPPES registry for Siang Lo is (831) 649-1011.
- Does Siang Lo accept Medicare?
- Siang Lo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Siang Lo's NPI active?
- Yes — Siang Lo's NPI (1821146606) is active in the NPPES registry as of the last update on 2020-09-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.