William Towne, MD
NPI 1184144958 · Family Medicine Physician · Fairfax, VA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Towne, MD is a Family Medicine Physician provider in Fairfax, VA (NPI 1184144958).
Provider details
- NPI number
- 1184144958
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 0116030242 (VA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
9 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
45 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 | 17 | $142 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 15 | $9 |
| Admn Sarscov2 Vacc 1 Dose90480 | 13 | $48 |
Typical Medicare-allowed amounts for these services range $9–$142 (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 · 95 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 531 | 192 |
| Amlodipine Besylate | 364 | 134 |
| Losartan Potassium | 274 | 99 |
| Lisinopril | 211 | 72 |
| Metformin Hcl | 186 | 66 |
| Losartan/Hydrochlorothiazidebrand: Losartan-Hydrochlorothiazide | 167 | 55 |
| Glipizide |
Practice location
Mailing address
Registry dates
- Enumerated
- 2017-06-22
- Last updated
- 2021-06-11
- Certified
- 2021-06-11
Frequently asked questions
- What is William Towne's NPI number?
- William Towne's National Provider Identifier (NPI) is 1184144958, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Towne's specialty?
- William Towne is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Towne located?
- William Towne's practice location on file with NPPES is 3650 Joseph Siewick Dr Ste 400, Fairfax, VA 22033-1715.
- What is William Towne's phone number?
- The practice phone number listed in the NPPES registry for William Towne is (703) 391-2020.
- Does William Towne accept Medicare?
- William Towne is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Towne's NPI active?
- Yes — William Towne's NPI (1184144958) is active in the NPPES registry as of the last update on 2021-06-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.