Rebecca Williamson, MD
Neurology Physician · Philadelphia, PA
Rebecca Williamson, MD is a neurology physician with a practice address in Philadelphia, Pennsylvania, and NPI 1316438914, issued on May 21, 2018. Check the license (Pennsylvania MD476885, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Rebecca Williamson
- Credential
- MD
- Primary taxonomy
- Neurology Physician 2084N0400X
- License number
- MD476885 PA
Self-reported in NPPES; status is on the state search - Practice location
- 330 South Ninth Street, Philadelphia, PA 19107
- Phone
- (215) 662-3606
- Enumerated
- May 21, 2018
- Record last updated
- Apr 22, 2025
- Fax
- (215) 829-6606
- Medicare enrollment
- Enrolled (PECOS I20240826002156); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 1,077 in Pennsylvania → Look up another NPI →
Also registered at 330 South Ninth Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Rebecca Williamson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD476885Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
72% fewer Medicare Part D claims than the average neurology physician in 2024
388 Medicare Part D claims for 148 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.
Most prescribed
- Carbidopa-Levodopa99 claims
- Carbidopa-Levodopa Er42 claims
- Donepezil Hcl32 claims
- Escitalopram Oxalate20 claims
- Duloxetine Hcl17 claims
- Risperidone15 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
- University OF Penn - Medical GroupPhiladelphia, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Rebecca Williamson among 1,077 neurology physician records in Pennsylvania
Rebecca Williamson, MD is one of 1,077 neurology physician records with a practice address in Pennsylvania. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 80% of them.
- NPI issued2018 · 80% of these records are older, 16% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2018 · median 2007 among the 727 with a school on file
- Record last updated2025 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology Physician providers in Pennsylvania
There are 1,077 neurology physician records in Pennsylvania.
All 1,077 in Pennsylvania → Every provider in Philadelphia → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Daniel Feinberg, MDPhiladelphia, PA 191071134151285
- Jon Glass, MDPhiladelphia, PA 191071427025626
- Pedro Gonzalez-Alegre, MDPhiladelphia, PA 191071003808684
- Stacy Horn, DOPhiladelphia, PA 191071962434019
- Howard Hurtig, MDPhiladelphia, PA 191071760414981
- Olga Katz, M.D., PH.D.Philadelphia, PA 191071427050913
- Thomas Leist, M.D.Philadelphia, PA 191071801816681
- Carol Lippa, MDPhiladelphia, PA 191071083664965
Common questions
What is Rebecca Williamson, MD's NPI number?
Rebecca Williamson, MD's National Provider Identifier (NPI) is 1316438914, issued on May 21, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Rebecca Williamson, MD located?
The NPPES record lists a practice address at 330 South Ninth Street, Philadelphia, PA, 19107. Phone: (215) 662-3606. Providers update this record themselves, so call before visiting.
How can I verify Rebecca Williamson, MD's license?
NPPES lists Pennsylvania license number MD476885, 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 Rebecca Williamson, MD prescribe under Medicare Part D?
In 2024, Rebecca Williamson, MD had 388 Medicare Part D claims for 148 beneficiaries; the average among neurology physician prescribers was 1,370. 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.