William Hammond, M. D.
NPI 1740223320 · Sleep Medicine (Internal Medicine) Physician · Charlottesville, VA
Enrolled with Medicare as Practitioner - Sleep Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Hammond, M. D. is a Sleep Medicine (Internal Medicine) Physician provider in Charlottesville, VA (NPI 1740223320).
Provider details
- NPI number
- 1740223320
- Entity type
- Individual
- Primary specialty
- Sleep Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M. D.
- Sex
- Male
- Sole proprietor
- No
- License
- 0101032072 (VA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 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
1,046 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 809 | $90 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 90 | $111 |
| Sleep Study in Sleep Lab (6 Years Or Older)95810 | 62 | $116 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 43 | $130 |
| Sleep Study Including Heart Rate, Breathing, Airflow, and Effort95806 | 28 | $43 |
| Sleep Study in Sleep Lab With Continuous Airway Pressure (6 Years Or Older) |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Dextroamphetamine/Amphetaminebrand: Dextroamphetamine-Amphetamine | 29 |
| Armodafinil | 24 |
| Modafinil | 20 |
| Lorazepam | 19 |
| Ropinirole Hcl | 16 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 13 |
| Solriamfetol Hclbrand: Sunosi | 13 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-13
- Last updated
- 2018-07-03
Frequently asked questions
- What is William Hammond's NPI number?
- William Hammond's National Provider Identifier (NPI) is 1740223320, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Hammond's specialty?
- William Hammond is listed in the NPPES registry with a primary specialty of Sleep Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is William Hammond located?
- William Hammond's practice location on file with NPPES is 500 Martha Jefferson Dr Fl 5, Charlottesville, VA 22911.
- What is William Hammond's phone number?
- The practice phone number listed in the NPPES registry for William Hammond is (434) 654-5260.
- Does William Hammond accept Medicare?
- William Hammond is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Hammond's NPI active?
- Yes — William Hammond's NPI (1740223320) is active in the NPPES registry as of the last update on 2018-07-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.