Mary Ellen Williams, D.O.
Family Medicine Physician · Whitehall, PA
Mary Ellen Williams, D.O. is a family medicine physician with a practice address in Whitehall, Pennsylvania, and NPI 1093855793, issued on Feb 8, 2007. Check the license (Pennsylvania OS008484L, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Mary Ellen Williams
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- OS008484L PA
Self-reported in NPPES; status is on the state search - Practice location
- 3691 Crescent CT E Ste 201, Whitehall, PA 18052
- Phone
- (610) 434-9561
- Enumerated
- Feb 8, 2007
- Record last updated
- Jul 19, 2023
- Medicaid ID
- 0016773350004 PA
- Medicare enrollment
- Enrolled (PECOS I20090508000241); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 1993
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 7,483 in Pennsylvania → Look up another NPI →
Also registered at 3691 Crescent CT E Ste 201
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Maria Caperelli Gergel, DOFamily Medicine Physician1962962126
- Alejandro GarciaFamily Medicine Physician1578195756
- Ella-Marie Kabia, MDFamily Medicine Physician1871238022
Verify Mary Ellen Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS008484LCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
27% fewer Medicare Part D claims than the average family medicine physician in 2024
2,585 Medicare Part D claims for 446 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 80 claims were for opioids.
Most prescribed
- Lisinopril173 claims
- Levothyroxine Sodium168 claims
- Amlodipine Besylate158 claims
- Atorvastatin Calcium95 claims
- Alprazolam92 claims
- Metformin Hcl77 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.
Bills Medicare through one group practice
- Lehigh Valley Physician GroupWhitehall, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Ellen Williams among 7,483 family medicine physician records in Pennsylvania
Mary Ellen Williams, D.O. is one of 7,483 family medicine physician records with a practice address in Pennsylvania. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 47% of them.
- NPI issued2007 · 47% of these records are older, 46% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated1993 · median 2005 among the 4,529 with a school on file
- Record last updated2023 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
16 family medicine physician records list a practice address in Whitehall
They are 16 of the 302 NPPES records with a practice address in Whitehall, and 7,483 family medicine physician records in Pennsylvania.
All 7,483 in Pennsylvania → Every provider in Whitehall → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Wassim Abosamra, M.DWhitehall, PA 180521972706091
- Maria Caperelli Gergel, DOWhitehall, PA 180521962962126
- Joseph Ciecko, DOWhitehall, PA 180521821035320
- Patricia Deangelis, DOWhitehall, PA 180521104857812
- Natalia Doni, M.DWhitehall, PA 180521376975433
- Narien Grover, MDWhitehall, PA 180521104850734
- Sohaib Mannan, MDWhitehall, PA 180521609365386
- Mary Mitchell, DOWhitehall, PA 180521700037751
Common questions
What is Mary Ellen Williams, D.O.'s NPI number?
Mary Ellen Williams, D.O.'s National Provider Identifier (NPI) is 1093855793, issued on Feb 8, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Mary Ellen Williams, D.O. located?
The NPPES record lists a practice address at 3691 Crescent CT E Ste 201, Whitehall, PA, 18052. Phone: (610) 434-9561. Providers update this record themselves, so call before visiting.
How can I verify Mary Ellen Williams, D.O.'s license?
NPPES lists Pennsylvania license number OS008484L, 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 Mary Ellen Williams, D.O. prescribe under Medicare Part D?
In 2024, Mary Ellen Williams, D.O. had 2,585 Medicare Part D claims for 446 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.