Rosa G. Williams, PA-C
Physician Assistant · Newark, NJ
Rosa G. Williams, PA-C is a physician assistant with a practice address in Newark, New Jersey, and NPI 1528279544, issued on May 24, 2007. Check the license (New Jersey 25MP00014000, as entered in NPPES) with the New Jersey board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Rosa G. Williams
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 25MP00014000 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 90 Bergen Street, Newark, NJ 07103
- Phone
- (973) 972-2323
- Enumerated
- May 24, 2007
- Record last updated
- Jul 9, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (973) 972-8553
- Medicaid ID
- 0639333636 NJ
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 3,393 in New Jersey → Look up another NPI →
Also registered at 90 Bergen Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Christopher Simotas, MDClinical Genetics (M.D.) Physician1932351137
Verify Rosa G. Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New Jersey board licenses this profession
Search for license 25MP00014000Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
64% fewer Medicare Part D claims than the average physician assistant in 2024
300 Medicare Part D claims for 83 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 19 claims were for opioids.
Most prescribed
- Amlodipine Besylate27 claims
- Oxycodone Hcl16 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.
Rosa G. Williams among 3,393 physician assistant records in New Jersey
Rosa G. Williams, PA-C is one of 3,393 physician assistant records with a practice address in New Jersey. 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 2007, is newer than 9% of them.
- NPI issued2007 · 9% of these records are older, 84% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileNo · 64% of these records are
- Record last updated2007 · 35% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
83 physician assistant records list a practice address in Newark
They are 83 of the 4,875 NPPES records with a practice address in Newark, and 3,393 physician assistant records in New Jersey.
All 3,393 in New Jersey → Every provider in Newark → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Sabrina Alfassa, PA-CNewark, NJ 071031730648213
- Wafeeqa Azeem, PA-CNewark, NJ 071031437548245
- Carolyn Demarest, PACNewark, NJ 071031811108285
- Hailee Donow, PA-CNewark, NJ 071031710470349
- Miriam EnockNewark, NJ 071031447621909
- Hernan Feliciano, P.A.Newark, NJ 071031750590451
- Michele GillilandNewark, NJ 071031629286638
- Mark Henry, MS, RPA-C, ATCNewark, NJ 071031578502779
Common questions
What is Rosa G. Williams, PA-C's NPI number?
Rosa G. Williams, PA-C's National Provider Identifier (NPI) is 1528279544, issued on May 24, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Rosa G. Williams, PA-C located?
The NPPES record lists a practice address at 90 Bergen Street, Newark, NJ, 07103. Phone: (973) 972-2323. Providers update this record themselves, so call before visiting.
How can I verify Rosa G. Williams, PA-C's license?
NPPES lists New Jersey license number 25MP00014000, as entered by the provider. Search the New Jersey board that licenses this profession; the NPPES record confirms identity only.
How much does Rosa G. Williams, PA-C prescribe under Medicare Part D?
In 2024, Rosa G. Williams, PA-C had 300 Medicare Part D claims for 83 beneficiaries; the average among physician assistant prescribers was 830. 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.