Doctor profile · Federal record
Dr. Michael Kalfopoulos, MD
Internal Medicine Physician (CMS: Internal Medicine) · Worcester, MA
- NPI 1235634320
- Accepts Medicare
- MIPS 89.0 / 100 · 2023
- 8 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 3 locations .
- Primary practice
-
119 Belmont St
Worcester, MA 016052903
(508) 334-8515
fax (508) 334-6490 - Additional location
-
157 Union St
Marlborough, MA 017521228
(508) 486-5678
fax (508) 486-5677 - Additional location
-
55 Lake Ave N
Worcester, MA 016550002
(083) 348-5155 - Mailing address
-
Po Box 415348
Boston, MA 022415348
Credentials & registration
- NPI registered
- March 2018 — 8 yrs on file
- Profile last updated
- September 2, 2022
- Year of graduation
- 2018 — 8 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Massachusetts #288033
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1235634320. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
635
Distinct HCPCS
5
Medicare allowed
$73,340
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 473 | 182 | $120 | |
99239 |
Hospital discharge day management, more than 30 minutes | 83 | 82 | $116 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 42 | 16 | $80 | |
G0316 |
Prolonged hospital inpatient or observation care evaluation and management service(s) beyond the total time for the primary service (when the primary service has been selected using time on the date of the primary service); each additional 15 minutes by th | 20 | 11 | $31 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 17 | 17 | $178 |
In context: peer comparison
Among 114 peers in Worcester Internal Medicine Physician, average services per provider: 102. This provider delivers 6.2× the peer median.Open Payments
Industry payments received
All-time total
$40
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Current Health INC. | 1 | $39.75 |
By nature of payment
Hospital affiliations
Frequently asked questions
What is Dr. Michael Kalfopoulos's medical specialty?
Dr. Michael Kalfopoulos practices Internal Medicine Physician in Worcester, MA.
Where does Dr. Michael Kalfopoulos practice?
Dr. Michael Kalfopoulos practices at 119 Belmont St, Worcester, MA 016052903. Office phone: 5083348515.
What is Dr. Michael Kalfopoulos's NPI?
Dr. Michael Kalfopoulos's National Provider Identifier (NPI) is 1235634320, issued by NPPES.
Does Dr. Michael Kalfopoulos accept Medicare assignment?
Yes. Dr. Michael Kalfopoulos accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Michael Kalfopoulos commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Hospital discharge day management (HCPCS 99239); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232). Source: CMS Medicare Physician & Other Practitioners file.