William L. Hiser, M.D.
Cardiovascular Disease Physician · Springfield, MA
William L. Hiser, M.D. is a cardiovascular disease physician with a practice address in Springfield, Massachusetts, and NPI 1366481459, issued on Jun 5, 2006. Check the license (Massachusetts 159655, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- William L. Hiser
- Credential
- M.D.
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License number
- 159655 MA
Self-reported in NPPES; status is on the state search - Practice location
- 3300 Main St, Springfield, MA 01107
- Phone
- (413) 794-2273
- Enumerated
- Jun 5, 2006
- Record last updated
- Jan 19, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (413) 794-0198
- Medicare enrollment
- Enrolled (PECOS I20050223000177); accepts Medicare assignment
- Medical or professional school
- University Of Texas Southwestern Medical School At Dallas, 1993
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 1,080 in Massachusetts → Look up another NPI →
Also registered at 3300 Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jacob Alexander, MDGastroenterology Physician1306907084
- Jennifer Allard, FNP-CFamily Nurse Practitioner1902533896
- Kassandra Allbright, MDPulmonary Disease Physician1194213942
- Varun Teja Angajala, MDGastroenterology Physician1962030940
- Olga Aponte, MDChild & Adolescent Psychiatry Physician1649369059
- Hany Aziz, MDCardiovascular Disease Physician1679580385
Verify William L. Hiser in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 159655Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
52% fewer Medicare Part D claims than the average cardiovascular disease physician in 2024
1,475 Medicare Part D claims for 203 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims.
Most prescribed
- Carvedilol224 claims
- Atorvastatin Calcium163 claims
- Lisinopril115 claims
- Eliquis109 claims
- Amlodipine Besylate91 claims
- Jardiance81 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: $16.23
1 payment: food and beverage; the largest payer was E.R. Squibb & Sons, L.L.C. The 16,686 providers of this specialty with any payment received $3,819.56 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).
William L. Hiser among 1,080 cardiovascular disease physician records in Massachusetts
William L. Hiser, M.D. is one of 1,080 cardiovascular disease 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 2006, is newer than 17% of them.
- NPI issued2006 · 17% of these records are older, 45% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated1993 · median 2001 among the 698 with a school on file
- Record last updated2018 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Cardiovascular Disease Physician providers in Massachusetts
There are 1,080 cardiovascular disease physician records in Massachusetts.
All 1,080 in Massachusetts → Every provider in Springfield → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- Hany Aziz, MDSpringfield, MA 011071679580385
- James Buffum, M.D.Springfield, MA 011071508820366
- James Haddad, M.D.Springfield, MA 011071609850007
- Leng Jiang, MDSpringfield, MA 011071316954969
- Howard Ledewitz, M.D.Springfield, MA 011071669456026
- Joan Lisak, M.D.Springfield, MA 011071013942531
- Thomas Marantz, M.D.Springfield, MA 011071669432621
- Quinn Pack, M.D.Springfield, MA 011071942268222
Common questions
What is William L. Hiser, M.D.'s NPI number?
William L. Hiser, M.D.'s National Provider Identifier (NPI) is 1366481459, issued on Jun 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William L. Hiser, M.D. located?
The NPPES record lists a practice address at 3300 Main St, Springfield, MA, 01107. Phone: (413) 794-2273. Providers update this record themselves, so call before visiting.
How can I verify William L. Hiser, M.D.'s license?
NPPES lists Massachusetts license number 159655, 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 William L. Hiser, M.D. prescribe under Medicare Part D?
In 2024, William L. Hiser, M.D. had 1,475 Medicare Part D claims for 203 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. 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.