Charles Chalko, D.O.
NPI 1548218126 · Internal Medicine Physician · South Weymouth, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charles Chalko, D.O. is a Internal Medicine Physician provider in South Weymouth, MA (NPI 1548218126).
Provider details
- NPI number
- 1548218126
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 76091 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,105 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 547 | $82 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 149 | $124 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 144 | $86 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 142 | $136 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 52 | $121 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 36 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cefpodoxime Proxetil | 25 | 25 |
| Prednisone | 20 | 20 |
| Quetiapine Fumarate | 15 | — |
| Metoprolol Succinate | 14 | 14 |
| Isosorbide Mononitratebrand: Isosorbide Mononitrate Er | 13 | — |
| Apixabanbrand: Eliquis | 12 | — |
| Azithromycin |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-05
- Last updated
- 2014-03-13
Frequently asked questions
- What is Charles Chalko's NPI number?
- Charles Chalko's National Provider Identifier (NPI) is 1548218126, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Chalko's specialty?
- Charles Chalko is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Charles Chalko located?
- Charles Chalko's practice location on file with NPPES is 541 Main St, South Weymouth, MA 02190-1868.
- What is Charles Chalko's phone number?
- The practice phone number listed in the NPPES registry for Charles Chalko is (781) 952-1240.
- Does Charles Chalko accept Medicare?
- Charles Chalko is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charles Chalko's NPI active?
- Yes — Charles Chalko's NPI (1548218126) is active in the NPPES registry as of the last update on 2014-03-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.