Sheldon C. Williams, PA-C
Surgical Physician Assistant · Springfield, MA
Sheldon C. Williams, PA-C is a surgical physician assistant with a practice address in Springfield, Massachusetts, and NPI 1578793105, issued on Jul 16, 2009. Check the license (Massachusetts PA4042, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Sheldon C. Williams
- Credential
- PA-C
- Primary taxonomy
- Surgical Physician Assistant 363AS0400X
- License number
- PA4042 MA
Self-reported in NPPES; status is on the state search - Practice location
- 2 Medical Center Dr, Springfield, MA 01107
- Phone
- (413) 794-4440
- Enumerated
- Jul 16, 2009
- Record last updated
- Sep 20, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (413) 794-5242
- Medicare enrollment
- Enrolled (PECOS I20101216000203); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest surgical physician assistant records → All 516 in Massachusetts → Look up another NPI →
Also registered at 2 Medical Center Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michael Albert, M.D.Surgery Physician1346212008
- Albert Alexander, M.D.Surgery Physician1518910694
- Reginald Alouidor, MDSurgery Physician1770548463
- Maria Aquadro, NPFamily Nurse Practitioner1124353040
- Mary Barber, CNMAdvanced Practice Midwife1962502906
- Julie Bell, CNMAdvanced Practice Midwife1245274539
Verify Sheldon C. Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license PA4042Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
76% fewer Medicare Part D claims than the average surgical physician assistant in 2024
72 Medicare Part D claims for 39 beneficiaries, against an average of 304 among the 10,174 providers of this specialty who prescribed in Part D. 34 claims were for opioids.
Most prescribed
- Tizanidine Hcl26 claims
- Oxycodone Hcl23 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: $20.00
1 payment: education; the largest payer was Csl Behring. The 7,578 providers of this specialty with any payment received $703.95 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
- Baystate Medical Practices IncSpringfield, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sheldon C. Williams among 516 surgical physician assistant records in Massachusetts
Sheldon C. Williams, PA-C is one of 516 surgical physician assistant records with a practice address in Massachusetts. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 32% of them.
- NPI issued2009 · 32% of these records are older, 63% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2009 · median 2014 among the 357 with a school on file
- Record last updated2010 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AS0400X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
84 surgical physician assistant records list a practice address in Springfield
They are 84 of the 8,553 NPPES records with a practice address in Springfield, and 516 surgical physician assistant records in Massachusetts.
All 516 in Massachusetts → Every provider in Springfield → Surgical Physician Assistant nationwide →
The 8 surgical physician assistant records with the nearest ZIP codes
- Gerry Baloyo, PA-CSpringfield, MA 011071861576456
- Phillip Carpino, P.A.Springfield, MA 011071629171830
- Michelle Caudle, PASpringfield, MA 011071851450902
- Jose Diaz, PA-CSpringfield, MA 011071851521082
- Megan Downey, PASpringfield, MA 011071972699486
- Lauren Flink, PA-CSpringfield, MA 011071104927250
- Alicia Higgins, PA-CSpringfield, MA 011071215002738
- Conrad Lo, P.A.-C.Springfield, MA 011071881701365
Common questions
What is Sheldon C. Williams, PA-C's NPI number?
Sheldon C. Williams, PA-C's National Provider Identifier (NPI) is 1578793105, issued on Jul 16, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Sheldon C. Williams, PA-C located?
The NPPES record lists a practice address at 2 Medical Center Dr, Springfield, MA, 01107. Phone: (413) 794-4440. Providers update this record themselves, so call before visiting.
How can I verify Sheldon C. Williams, PA-C's license?
NPPES lists Massachusetts license number PA4042, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Sheldon C. Williams, PA-C prescribe under Medicare Part D?
In 2024, Sheldon C. Williams, PA-C had 72 Medicare Part D claims for 39 beneficiaries; the average among surgical physician assistant prescribers was 304. 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.