Sunny Lo, D.O.
NPI 1891053187 · Gastroenterology Physician · Arcadia, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sunny Lo, D.O. is a Gastroenterology Physician provider in Arcadia, CA (NPI 1891053187).
Provider details
- NPI number
- 1891053187
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 20A13069 (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
14 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
903 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 | 168 | $133 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 131 | $179 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 111 | $179 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 109 | $88 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 82 | $186 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 199 | 110 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 170 | 166 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 144 | 142 |
| Pantoprazole Sodium | 111 | 55 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Peg-3350 and Electrolytes | 35 | 35 |
| Rifaximinbrand: Xifaxan | 28 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,296 across 53 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
- 2012-04-25
- Last updated
- 2023-08-14
- Certified
- 2023-08-14
Frequently asked questions
- What is Sunny Lo's NPI number?
- Sunny Lo's National Provider Identifier (NPI) is 1891053187, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sunny Lo's specialty?
- Sunny Lo is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Sunny Lo located?
- Sunny Lo's practice location on file with NPPES is 612 W Duarte Rd Ste 601, Arcadia, CA 91007-9240.
- What is Sunny Lo's phone number?
- The practice phone number listed in the NPPES registry for Sunny Lo is (818) 659-5887.
- Does Sunny Lo accept Medicare?
- Sunny Lo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sunny Lo's NPI active?
- Yes — Sunny Lo's NPI (1891053187) is active in the NPPES registry as of the last update on 2023-08-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.