Philip S. Hsu, MD
Neurology Physician · Springfield, MA
Philip S. Hsu, MD is a neurology physician with a practice address in Springfield, Massachusetts, and NPI 1881696813, issued on Aug 10, 2005. Check the license (Massachusetts 151891, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Philip S. Hsu
- Credential
- MD
- Primary taxonomy
- Neurology Physician 2084N0400X
- License number
- 151891 MA
Self-reported in NPPES; status is on the state search - Practice location
- 3300 Main Street, Springfield, MA 01107
- Phone
- (413) 794-5600
- Enumerated
- Aug 10, 2005
- Record last updated
- Jan 12, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (413) 794-7297
- Medicare enrollment
- Enrolled (PECOS I20050518000147); accepts Medicare assignment
- Medical or professional school
- Tufts University School Of Medicine, 1992
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 964 in Massachusetts → Look up another NPI →
Also registered at 3300 Main Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Stuart Anfang, M.D.Psychiatry Physician1033269410
- Stacie Baldwin, PA-CMedical Physician Assistant1558518951
- George Baquis, MDNeurology Physician1912002965
Verify Philip S. Hsu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 151891Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
17% more Medicare Part D claims than the average neurology physician in 2024
1,601 Medicare Part D claims for 252 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Gabapentin113 claims
- Dimethyl Fumarate108 claims
- Azathioprine85 claims
- Pyridostigmine Bromide75 claims
- Baclofen62 claims
- Carbidopa-Levodopa57 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
- Baystate Medical Practices IncSpringfield, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Philip S. Hsu among 964 neurology physician records in Massachusetts
Philip S. Hsu, MD is one of 964 neurology physician records with a practice address in Massachusetts. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 86% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1992 · median 2006 among the 612 with a school on file
- Record last updated2018 · 59% 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 Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology Physician providers in Massachusetts
There are 964 neurology physician records in Massachusetts.
All 964 in Massachusetts → Every provider in Springfield → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Rani Athreya, MDSpringfield, MA 011071114000734
- George Baquis, MDSpringfield, MA 011071912002965
- Donald Blair, MDSpringfield, MA 011071609894104
- Ennis Duffis, M.D.Springfield, MA 011071174674295
- Edward Feldmann, MDSpringfield, MA 011071568406858
- Ian Goldsmith, MDSpringfield, MA 011071730170994
- Meghan Hickey, MDSpringfield, MA 011071841429842
- William House, MDSpringfield, MA 011071518040724
Common questions
What is Philip S. Hsu, MD's NPI number?
Philip S. Hsu, MD's National Provider Identifier (NPI) is 1881696813, issued on Aug 10, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Philip S. Hsu, MD located?
The NPPES record lists a practice address at 3300 Main Street, Springfield, MA, 01107. Phone: (413) 794-5600. Providers update this record themselves, so call before visiting.
How can I verify Philip S. Hsu, MD's license?
NPPES lists Massachusetts license number 151891, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Philip S. Hsu, MD prescribe under Medicare Part D?
In 2024, Philip S. Hsu, MD had 1,601 Medicare Part D claims for 252 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.