Danny Thach-Song, M.D.
NPI 1235540162 · Family Medicine Physician · Ashburn, VA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Danny Thach-Song, M.D. is a Family Medicine Physician provider in Ashburn, VA (NPI 1235540162).
Provider details
- NPI number
- 1235540162
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- MT209857 (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
12 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
265 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 | 184 | $124 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 47 | $90 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 34 | $131 |
Typical Medicare-allowed amounts for these services range $90–$131 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 45 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 215 | 69 |
| Amlodipine Besylate | 113 | 38 |
| Losartan Potassium | 101 | 36 |
| Levothyroxine Sodium | 86 | 29 |
| Metformin Hcl | 70 | 23 |
| Lisinopril | 63 | 25 |
| Rosuvastatin Calcium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-05-13
- Last updated
- 2022-06-23
- Certified
- 2022-06-23
Frequently asked questions
- What is Danny Thach-Song's NPI number?
- Danny Thach-Song's National Provider Identifier (NPI) is 1235540162, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Danny Thach-Song's specialty?
- Danny Thach-Song is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Danny Thach-Song located?
- Danny Thach-Song's practice location on file with NPPES is 22505 Landmark Ct Ste 210, Ashburn, VA 20148-6502.
- What is Danny Thach-Song's phone number?
- The practice phone number listed in the NPPES registry for Danny Thach-Song is (571) 612-6600.
- Does Danny Thach-Song accept Medicare?
- Danny Thach-Song is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Danny Thach-Song's NPI active?
- Yes — Danny Thach-Song's NPI (1235540162) is active in the NPPES registry as of the last update on 2022-06-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.