Shiun Ker, M.D.
NPI 1669554887 · Surgery Physician · Monterey Park, CA
Enrolled with Medicare as Practitioner - Colorectal Surgery (proctology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Shiun Ker, M.D. is a Surgery Physician provider in Monterey Park, CA (NPI 1669554887).
Provider details
- NPI number
- 1669554887
- Entity type
- Individual
- Primary specialty
- Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A43001 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
1,065 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 260 | $98 |
| Diagnostic Exam of Rectum and Lower Large Bowel Using an Endoscope45300 | 204 | $144 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 145 | $120 |
| Removal of External Hemorrhoids By Rubber Banding46221 | 143 | $315 |
| Diagnostic Exam of Anus Using an Endoscope46600 | 139 | $134 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Famotidine | 52 | 23 |
| Lidocaine | 42 | 26 |
| Sodium Chloride/Nahco3/Kcl/Pegbrand: Peg 3350-Electrolyte | 41 | 41 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 31 | 31 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-C | 27 | 27 |
| Dicyclomine Hcl | 17 | — |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Peg-3350 and Electrolytes | 11 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$187 across 3 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
- 2006-10-19
- Last updated
- 2025-09-11
Frequently asked questions
- What is Shiun Ker's NPI number?
- Shiun Ker's National Provider Identifier (NPI) is 1669554887, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Shiun Ker's specialty?
- Shiun Ker is listed in the NPPES registry with a primary specialty of Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Shiun Ker located?
- Shiun Ker's practice location on file with NPPES is 600 N Garfield Ave, Monterey Park, CA 91754-1166.
- What is Shiun Ker's phone number?
- The practice phone number listed in the NPPES registry for Shiun Ker is (626) 571-8271.
- Does Shiun Ker accept Medicare?
- Shiun Ker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Shiun Ker's NPI active?
- Yes — Shiun Ker's NPI (1669554887) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.