Teresa Williams, MD
NPI 1306827399 · Allergy & Immunology Physician · Winchester, VA
Enrolled with Medicare as Practitioner - Allergy/Immunology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Teresa Williams, MD is a Allergy & Immunology Physician provider in Winchester, VA (NPI 1306827399).
Provider details
- NPI number
- 1306827399
- Entity type
- Individual
- Primary specialty
- Allergy & Immunology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 0101267695 (VA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 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
5,500 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) |
|---|---|---|
| Test for Allergy Using Allergenic Extract95004 | 3,897 | $3 |
| Professional Service for Preparation and Provision of 1 Or More Antigens95165 | 610 | $14 |
| Professional Service for Multiple Injections of Allergen95117 | 378 | $12 |
| Professional Service for Single Injection of Allergen95115 | 164 | $10 |
| Administration and Interpretation of Patient-Focused Health Risk Assessment96160 | 142 | $3 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 121 | $154 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Montelukast Sodium | 63 | 16 |
| Fluticasone Propionate | 53 | 27 |
| Epinephrine | 46 | 35 |
| Azelastine Hcl | 37 | 25 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 31 | 25 |
| Fluticasone Propion/Salmeterolbrand: Fluticasone-Salmeterol | 23 | — |
| Fluticasone Furoatebrand: Arnuity Ellipta |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$256 across 12 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
- 2005-11-08
- Last updated
- 2023-10-31
- Certified
- 2023-10-31
Frequently asked questions
- What is Teresa Williams's NPI number?
- Teresa Williams's National Provider Identifier (NPI) is 1306827399, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Teresa Williams's specialty?
- Teresa Williams is listed in the NPPES registry with a primary specialty of Allergy & Immunology Physician (Allopathic & Osteopathic Physicians).
- Where is Teresa Williams located?
- Teresa Williams's practice location on file with NPPES is 1828 Plaza Dr, Winchester, VA 22601-6365.
- What is Teresa Williams's phone number?
- The practice phone number listed in the NPPES registry for Teresa Williams is (540) 662-9115.
- Does Teresa Williams accept Medicare?
- Teresa Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Teresa Williams's NPI active?
- Yes — Teresa Williams's NPI (1306827399) is active in the NPPES registry as of the last update on 2023-10-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.