Charles P. Chalko, D.O.
Internal Medicine Physician · South Weymouth, MA
Charles P. Chalko, D.O. is an internal medicine physician with a practice address in South Weymouth, Massachusetts, and NPI 1548218126, issued on May 5, 2006. Check the license (Massachusetts 76091, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Charles P. Chalko
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 76091 MA
Self-reported in NPPES; status is on the state search - Practice location
- 541 Main St, South Weymouth, MA 02190
- Phone
- (781) 952-1240
- Enumerated
- May 5, 2006
- Record last updated
- Mar 13, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (781) 952-1257
- Medicaid ID
- 3094588 MA
- Medicare enrollment
- Enrolled (PECOS I20050426001233); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →
Also registered at 541 Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Dana AnstettMental Health Counselor1770857286
- Tara Armstrong, PA-CMedical Physician Assistant1811049414
- Richard Ashburn, MDPulmonary Disease Physician1861492746
- John Casey, D.C.Chiropractor1700805181
- Jeanne Colton, NPNurse Practitioner1992782072
- J. Corrodi, MDCardiovascular Disease Physician1457351330
Verify Charles P. Chalko in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 76091Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average internal medicine physician in 2024
298 Medicare Part D claims for 152 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 13 claims were for opioids.
Most prescribed
- Cefpodoxime Proxetil25 claims
- Prednisone20 claims
- Quetiapine Fumarate15 claims
- Metoprolol Succinate14 claims
- Isosorbide Mononitrate Er13 claims
- Eliquis12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 82.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Coastal Medical AssociatesWeymouth, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Charles P. Chalko among 6,825 internal medicine physician records in Massachusetts
Charles P. Chalko, D.O. is one of 6,825 internal medicine physician records with a practice address in Massachusetts. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 12% of them.
- NPI issued2006 · 12% of these records are older, 54% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1984 · median 2004 among the 4,103 with a school on file
- Record last updated2014 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
21 internal medicine physician records list a practice address in South Weymouth
They are 21 of the 445 NPPES records with a practice address in South Weymouth, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in South Weymouth → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Aboualkheir Alzaim, MDSouth Weymouth, MA 021901073595260
- Brian Battista, MDSouth Weymouth, MA 021901821075961
- Brian Dolan, M.D.Weymouth, MA 021901952345928
- Judy Dunal, MDSouth Weymouth, MA 021901619954757
- Vitaly Ermolin, MDWeymouth, MA 021901114901485
- Andrea Kopasz, M.D.South Weymouth, MA 021901770698573
- Robert Lille, MDSouth Weymouth, MA 021901548247695
- Marvin Lipschutz, M.D.Weymouth, MA 021901821060484
Common questions
What is Charles P. Chalko, D.O.'s NPI number?
Charles P. Chalko, D.O.'s National Provider Identifier (NPI) is 1548218126, issued on May 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Charles P. Chalko, D.O. located?
The NPPES record lists a practice address at 541 Main St, South Weymouth, MA, 02190. Phone: (781) 952-1240. Providers update this record themselves, so call before visiting.
How can I verify Charles P. Chalko, D.O.'s license?
NPPES lists Massachusetts license number 76091, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Charles P. Chalko, D.O. prescribe under Medicare Part D?
In 2024, Charles P. Chalko, D.O. had 298 Medicare Part D claims for 152 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Charles P. Chalko, D.O.'s MIPS final score?
The 2023 MIPS final score is 82.8 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.