Woon Sim, M.D.
NPI 1730130782 · Adult Medicine Physician · Houston, TX
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Woon Sim, M.D. is a Adult Medicine Physician provider in Houston, TX (NPI 1730130782).
Provider details
- NPI number
- 1730130782
- Entity type
- Individual
- Primary specialty
- Adult Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- J9810 (TX)
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
870 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 | 577 | $126 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 132 | $124 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 54 | $14 |
| Administration of Influenza Virus VaccineG0008 | 39 | $30 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 18 | $91 |
| Initial Preventive Physical Examination; Face-To-Face Visit, Services Limited to New Beneficiary During the First 12 Months of Medicare EnrollmentG0402 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 145 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 951 | 301 |
| Amlodipine Besylate | 802 | 265 |
| Simvastatin | 742 | 222 |
| Losartan Potassium | 713 | 228 |
| Metformin Hcl | 665 | 209 |
| Levothyroxine Sodium | 373 | 117 |
| Alendronate Sodium | 334 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$634 across 35 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
- 2006-05-15
- Last updated
- 2007-07-08
Frequently asked questions
- What is Woon Sim's NPI number?
- Woon Sim's National Provider Identifier (NPI) is 1730130782, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Woon Sim's specialty?
- Woon Sim is listed in the NPPES registry with a primary specialty of Adult Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Woon Sim located?
- Woon Sim's practice location on file with NPPES is 902 Frostwood Dr, Houston, TX 77024-2420.
- What is Woon Sim's phone number?
- The practice phone number listed in the NPPES registry for Woon Sim is (713) 827-9900.
- Does Woon Sim accept Medicare?
- Woon Sim is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Woon Sim's NPI active?
- Yes — Woon Sim's NPI (1730130782) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.