Lester Ong, M.D.
NPI 1255337119 · Internal Medicine Physician · Stephenville, TX
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lester Ong, M.D. is a Internal Medicine Physician provider in Stephenville, TX (NPI 1255337119).
Provider details
- NPI number
- 1255337119
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- K1603 (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
5,594 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 | 1,038 | $88 |
| 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 | 612 | $16 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 537 | $9 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 413 | $61 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 385 | $8 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 250 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 775 | 197 |
| Levothyroxine Sodium | 628 | 142 |
| Gabapentin | 599 | 125 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 582 | 108 |
| Furosemide | 581 | 106 |
| Amlodipine Besylate | 508 | 123 |
| Lisinopril |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$433 across 19 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
- 2005-06-24
- Last updated
- 2022-10-06
- Certified
- 2022-10-06
Frequently asked questions
- What is Lester Ong's NPI number?
- Lester Ong's National Provider Identifier (NPI) is 1255337119, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lester Ong's specialty?
- Lester Ong is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Lester Ong located?
- Lester Ong's practice location on file with NPPES is 150 River North Blvd, Stephenville, TX 76401-1803.
- What is Lester Ong's phone number?
- The practice phone number listed in the NPPES registry for Lester Ong is (254) 968-6051.
- Does Lester Ong accept Medicare?
- Lester Ong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lester Ong's NPI active?
- Yes — Lester Ong's NPI (1255337119) is active in the NPPES registry as of the last update on 2022-10-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.