Elizabeth Williams-Drueding, DO
Internal Medicine Physician · King Of Prussia, PA
Elizabeth Williams-Drueding, DO is an internal medicine physician with a practice address in King Of Prussia, Pennsylvania, and NPI 1639589351, issued on May 2, 2014. Check the license (Pennsylvania OS023372, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Elizabeth Williams-Drueding
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- OS023372 PA
Self-reported in NPPES; status is on the state search - Practice location
- 700 S Henderson RD Ste 108, King Of Prussia, PA 19406
- Phone
- (484) 923-9176
- Enumerated
- May 2, 2014
- Record last updated
- Jan 13, 2026
- Fax
- (484) 873-1689
- Medicare enrollment
- Enrolled (PECOS I20240321001230); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 2014
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,300 in Pennsylvania → Look up another NPI →
Also registered at 700 S Henderson RD Ste 108
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lisa McGovern, RN, FNP-CFamily Nurse Practitioner1922843481
- Elyse Rosenthal, D.O.Internal Medicine Physician1639599293
Verify Elizabeth Williams-Drueding in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS023372Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
75% fewer Medicare Part D claims than the average internal medicine physician in 2024
794 Medicare Part D claims for 333 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 18 claims were for opioids.
Most prescribed
- Amlodipine Besylate40 claims
- Atorvastatin Calcium36 claims
- Rosuvastatin Calcium35 claims
- Losartan Potassium33 claims
- Levothyroxine Sodium22 claims
- Omeprazole19 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $16.69
1 payment: food and beverage; the largest payer was Exact Sciences Corporation. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Novacare Outpatient Rehabilitation East, Inc.Collegeville, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Elizabeth Williams-Drueding among 7,300 internal medicine physician records in Pennsylvania
Elizabeth Williams-Drueding, DO is one of 7,300 internal medicine physician records with a practice address in Pennsylvania. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 60% of them.
- NPI issued2014 · 60% of these records are older, 38% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2014 · median 2008 among the 4,208 with a school on file
- Record last updated2026 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
15 internal medicine physician records list a practice address in King Of Prussia
They are 15 of the 1,391 NPPES records with a practice address in King Of Prussia, and 7,300 internal medicine physician records in Pennsylvania.
All 7,300 in Pennsylvania → Every provider in King Of Prussia → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Frederic Becker, M.DKing Of Prussia, PA 194061194712174
- Melissa Cognetti, MDKing Of Prussia, PA 194061518997675
- Jayson Dupre, DOKing Of Prussia, PA 194061851500185
- Andrew Ecker, MDKing Of Prussia, PA 194061669400818
- Bess Koenigsberg, M.D.King Of Prussia, PA 194061992833743
- Emma Link, MDKing Of Prussia, PA 194061528649381
- Michael O'Brien, M.D.King Of Prussia, PA 194061215257100
- Saheed Ojo-Oniyun, M.DKing Of Prussia, PA 194061649333071
Common questions
What is Elizabeth Williams-Drueding, DO's NPI number?
Elizabeth Williams-Drueding, DO's National Provider Identifier (NPI) is 1639589351, issued on May 2, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Elizabeth Williams-Drueding, DO located?
The NPPES record lists a practice address at 700 S Henderson RD Ste 108, King Of Prussia, PA, 19406. Phone: (484) 923-9176. Providers update this record themselves, so call before visiting.
How can I verify Elizabeth Williams-Drueding, DO's license?
NPPES lists Pennsylvania license number OS023372, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Elizabeth Williams-Drueding, DO prescribe under Medicare Part D?
In 2024, Elizabeth Williams-Drueding, DO had 794 Medicare Part D claims for 333 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.