Elizabeth Williams-Drueding, DO
NPI 1639589351 · Internal Medicine Physician · King of Prussia, PA
Elizabeth Williams-Drueding, DO is a Internal Medicine Physician provider in King of Prussia, PA (NPI 1639589351).
Provider details
- NPI number
- 1639589351
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- OS023372 (PA)
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
12 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
312 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 141 | $130 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 63 | $92 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 45 | $186 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 38 | $15 |
| Transitional Care Management Services for Problem of at Least Moderate Complexity99495 | 13 | $212 |
| Administration of Influenza Virus Vaccine |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 23 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 40 | 26 |
| Atorvastatin Calcium | 36 | 20 |
| Rosuvastatin Calcium | 35 | 19 |
| Losartan Potassium | 33 | 19 |
| Levothyroxine Sodium | 22 | 13 |
| Omeprazole | 19 | 11 |
| Nitrofurantoin Monohyd/M-Cryst |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$17 across 1 record (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
- 2014-05-02
- Last updated
- 2026-01-13
- Certified
- 2026-01-13
Frequently asked questions
- What is Elizabeth Williams-Drueding's NPI number?
- Elizabeth Williams-Drueding's National Provider Identifier (NPI) is 1639589351, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Elizabeth Williams-Drueding's specialty?
- Elizabeth Williams-Drueding is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Elizabeth Williams-Drueding located?
- Elizabeth Williams-Drueding's practice location on file with NPPES is 700 S Henderson Rd Ste 108, King of Prussia, PA 19406-3530.
- What is Elizabeth Williams-Drueding's phone number?
- The practice phone number listed in the NPPES registry for Elizabeth Williams-Drueding is (484) 923-9176.
- Is Elizabeth Williams-Drueding's NPI active?
- Yes — Elizabeth Williams-Drueding's NPI (1639589351) is active in the NPPES registry as of the last update on 2026-01-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.