Stephen Ong, MD
NPI 1851479281 · Family Medicine Physician · Oxon Hill, MD
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Ong, MD is a Family Medicine Physician provider in Oxon Hill, MD (NPI 1851479281).
Provider details
- NPI number
- 1851479281
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD6423 (DC)
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
1,214 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 | 347 | $137 |
| Annual Alcohol Misuse Screening, 5 to 15 MinutesG0442 | 152 | $20 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 149 | $139 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 148 | $21 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 123 | $93 |
| Advance Care Planning, First 30 Minutes99497 | 111 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 54 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 167 | 59 |
| Atorvastatin Calcium | 136 | 46 |
| Allopurinol | 115 | 33 |
| Levothyroxine Sodium | 114 | 30 |
| Glimepiride | 87 | 25 |
| Simvastatin | 84 | 21 |
| Donepezil Hcl | 79 | 29 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,291 across 42 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
- 2006-11-02
- Last updated
- 2011-05-10
Frequently asked questions
- What is Stephen Ong's NPI number?
- Stephen Ong's National Provider Identifier (NPI) is 1851479281, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Ong's specialty?
- Stephen Ong is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Ong located?
- Stephen Ong's practice location on file with NPPES is 6357 Oxon Hill Rd, Oxon Hill, MD 20745-2214.
- What is Stephen Ong's phone number?
- The practice phone number listed in the NPPES registry for Stephen Ong is (301) 839-2700.
- Does Stephen Ong accept Medicare?
- Stephen Ong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Ong's NPI active?
- Yes — Stephen Ong's NPI (1851479281) is active in the NPPES registry as of the last update on 2011-05-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.