Doctor profile · Federal record
Dr. William Belcastro, M.D.
Internal Medicine Physician (CMS: Internal Medicine) · Springfield, MA
- NPI 1548269251
- Accepts Medicare
- 55 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
299 Carew St, Suite 322
Springfield, MA 011042301
(413) 737-2371
fax (413) 788-7829
Credentials & registration
- NPI registered
- July 2005 — 21 yrs on file
- Profile last updated
- November 16, 2012
- Year of graduation
- 1971 — 55 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Massachusetts #37640
- Medicaid
- MA #0150983
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1548269251. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
2,937
Distinct HCPCS
10
Medicare allowed
$114,946
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 327 | 134 | $130 | |
36415 |
Insertion of needle into vein for collection of blood sample | 212 | 134 | $8 | |
85025 |
Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | 138 | 123 | $8 | |
80053 |
Blood test, comprehensive group of blood chemicals | 128 | 124 | $10 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 127 | 115 | $183 | |
86141 |
Measurement c-reactive protein for detection of infection or inflammation, high sensitivity | 125 | 119 | $13 | |
93000 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 123 | 117 | $15 | |
93040 |
Electrocardiogram (ecg) 1 to 3 leads with review by physician | 123 | 117 | $13 | |
81003 |
Automated urinalysis test | 122 | 115 | $2 | |
80061 |
Blood test, lipids (cholesterol and triglycerides) | 121 | 116 | $13 |
In context: peer comparison
Among 83 peers in Springfield Internal Medicine Physician, average services per provider: 126. This provider delivers 23× the peer median.Open Payments
Industry payments received
All-time total
$34
Transactions
2
Manufacturers
2
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Lilly USA, LLC | 1 | $17.87 | |
| Abbvie INC. | 1 | $16.01 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
2,358
Patients
635
Total drug cost
$151,590
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 382 | 99 | $8,390 |
| Losartan Potassium | Generic | 293 | 79 | $5,869 |
| Amlodipine Besylate | Generic | 203 | 58 | $1,934 |
| Metoprolol Succinate | Generic | 202 | 56 | $5,059 |
| Lisinopril | Generic | 198 | 55 | $2,492 |
| Hydrochlorothiazide | Generic | 166 | 51 | $1,352 |
| Escitalopram Oxalate | Generic | 158 | 43 | $3,039 |
| Metformin Hcl | Generic | 115 | 34 | $1,724 |
| Eliquis (Apixaban) | Brand | 114 | 22 | $111,850 |
| Omeprazole | Generic | 112 | 31 | $2,431 |
Frequently asked questions
What is Dr. William Belcastro's medical specialty?
Dr. William Belcastro practices Internal Medicine Physician in Springfield, MA.
Where does Dr. William Belcastro practice?
Dr. William Belcastro practices at 299 Carew St, Springfield, MA 011042301. Office phone: 4137372371.
What is Dr. William Belcastro's NPI?
Dr. William Belcastro's National Provider Identifier (NPI) is 1548269251, issued by NPPES.
Does Dr. William Belcastro accept Medicare assignment?
Yes. Dr. William Belcastro accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. William Belcastro commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Insertion of needle into vein for collection of blood sample (HCPCS 36415); Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (HCPCS 85025). Source: CMS Medicare Physician & Other Practitioners file.