Doctor profile · Federal record

Dr. Charles Chalko, D.O.

Internal Medicine Physician (CMS: Internal Medicine) · South Weymouth, MA

  • NPI 1548218126
  • Accepts Medicare
  • MIPS 79.9 / 100 · 2023
  • 42 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
541 Main St, Suite 400
South Weymouth, MA 021901868
(781) 952-1240
fax (781) 952-1257

Credentials & registration

NPPES · NUCC
NPI registered
May 2006 — 20 yrs on file
Profile last updated
March 13, 2014
Year of graduation
1984 — 42 yrs since
Specialty taxonomy
207R00000X — NUCC code
State license (1)
Massachusetts #76091
Medicaid
MA #3094588

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1548218126. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
1,040
Distinct HCPCS
3
Medicare allowed
$97,717
HCPCS Description Services Patients Avg allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 692 263 $84
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 181 178 $138
99238 Hospital discharge day management, 30 minutes or less 167 159 $87

In context: peer comparison

Among 11 peers in South Weymouth Internal Medicine Physician, average services per provider: 150. This provider delivers 6.9× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
102
Patients
45
Total drug cost
$8,137
Drug Type Claims Patients Total cost
Cefpodoxime Proxetil Generic 19 19 $514
Atorvastatin Calcium Generic 14 13 $259
Amlodipine Besylate Generic 13 13 $73
Eliquis (Apixaban) Brand 12 0 $6,959
Furosemide Generic 11 0 $51
Lisinopril Generic 11 0 $46
Metoprolol Succinate Generic 11 0 $116
Quetiapine Fumarate Generic 11 0 $118

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Charles Chalko's medical specialty?
Dr. Charles Chalko practices Internal Medicine Physician in South Weymouth, MA.
Where does Dr. Charles Chalko practice?
Dr. Charles Chalko practices at 541 Main St, South Weymouth, MA 021901868. Office phone: 7819521240.
What is Dr. Charles Chalko's NPI?
Dr. Charles Chalko's National Provider Identifier (NPI) is 1548218126, issued by NPPES.
Does Dr. Charles Chalko accept Medicare assignment?
Yes. Dr. Charles Chalko accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Charles Chalko commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Initial hospital care with straightforward or low-level medical decision making (HCPCS 99222); Hospital discharge day management (HCPCS 99238). Source: CMS Medicare Physician & Other Practitioners file.