Doctor profile · Federal record

Dr. William Hiser, M.D.

Cardiovascular Disease Physician (CMS: Cardiovascular Disease (Cardiology)) · Springfield, MA

  • NPI 1366481459
  • Accepts Medicare
  • 33 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
3300 Main St, 2Nd Fl Suite A
Springfield, MA 011071112
(413) 794-2273
fax (413) 794-0198
Mailing address
280 Chestnut St, 2Nd Fl
Springfield, MA 011991001

Credentials & registration

NPPES · NUCC
NPI registered
June 2006 — 20 yrs on file
Profile last updated
January 19, 2018
Year of graduation
1993 — 33 yrs since
Specialty taxonomy
207RC0000X — NUCC code
State license (1)
Massachusetts #159655

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1366481459. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
3,637
Distinct HCPCS
10
Medicare allowed
$183,274
HCPCS Description Services Patients Avg allowed
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 1,459 1,181 $8
93306 Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 993 938 $69
93325 Ultrasound of heart with color-depicted blood flow, rate and valve function 124 118 $3
93308 Ultrasound of heart, follow-up 123 118 $25
99214 Established patient office or other outpatient visit, 30-39 minutes 109 106 $97
A9500 Technetium tc-99m sestamibi, diagnostic, per study dose 85 49 $117
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 84 84 $175
93321 Ultrasound of heart blood flow, valves and chambers, follow-up 76 74 $7
78452 Nuclear medicine studies of heart muscle at rest and with stress and spect 68 68 $77
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 60 39 $120

In context: peer comparison

Among 13 peers in Springfield Cardiovascular Disease Physician, average services per provider: 121. This provider delivers 30× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$16
Transactions
1
Manufacturers
1
Payer (manufacturer) Industry Txns Amount
E.R. Squibb & Sons, L.L.C. 1 $16.23

By nature of payment

Food and Beverage
$16

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
1,005
Patients
225
Total drug cost
$171,972
Drug Type Claims Patients Total cost
Carvedilol Generic 175 51 $3,055
Atorvastatin Calcium Generic 146 43 $4,245
Lisinopril Generic 98 29 $794
Amlodipine Besylate Generic 84 19 $686
Jardiance (Empagliflozin) Brand 68 13 $50,069
Eliquis (Apixaban) Brand 67 14 $59,001
Metoprolol Succinate Generic 63 19 $2,004
Spironolactone Generic 62 13 $737
Losartan Potassium Generic 52 13 $1,102
Hydrochlorothiazide Generic 42 0 $168

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. William Hiser's medical specialty?
Dr. William Hiser practices Cardiovascular Disease Physician in Springfield, MA.
Where does Dr. William Hiser practice?
Dr. William Hiser practices at 3300 Main St, Springfield, MA 011071112. Office phone: 4137942273.
What is Dr. William Hiser's NPI?
Dr. William Hiser's National Provider Identifier (NPI) is 1366481459, issued by NPPES.
Does Dr. William Hiser accept Medicare assignment?
Yes. Dr. William Hiser accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. William Hiser commonly perform?
Top Medicare-reported procedures in 2023: Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (HCPCS 93010); Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (HCPCS 93306); Ultrasound of heart with color-depicted blood flow, rate and valve function (HCPCS 93325). Source: CMS Medicare Physician & Other Practitioners file.