Jason Williams, MD
NPI 1699979682 · Psychiatry Physician · Harrisonburg, VA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jason Williams, MD is a Psychiatry Physician provider in Harrisonburg, VA (NPI 1699979682).
Provider details
- NPI number
- 1699979682
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Allopathic & Osteopathic Physicians
- General Acute Care Hospital282N00000X
Hospitals
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
137 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 | 137 | $63 |
Typical Medicare-allowed amounts for these services range $63–$63 (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 · 37 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Quetiapine Fumarate | 144 | 27 |
| Olanzapine | 95 | 15 |
| Lorazepam | 87 | — |
| Lamotrigine | 84 | 18 |
| Divalproex Sodium | 75 | — |
| Bupropion Hclbrand: Bupropion Xl | 73 | 15 |
| Aripiprazole | 71 | 20 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-06-13
- Last updated
- 2014-10-08
Frequently asked questions
- What is Jason Williams's NPI number?
- Jason Williams's National Provider Identifier (NPI) is 1699979682, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jason Williams's specialty?
- Jason Williams is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Jason Williams located?
- Jason Williams's practice location on file with NPPES is 644 University Blvd, Harrisonburg, VA 22801-3750.
- What is Jason Williams's phone number?
- The practice phone number listed in the NPPES registry for Jason Williams is (540) 564-7007.
- Does Jason Williams accept Medicare?
- Jason Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jason Williams's NPI active?
- Yes — Jason Williams's NPI (1699979682) is active in the NPPES registry as of the last update on 2014-10-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.