Mary Dawn T. Co, M.D.
Infectious Disease Physician · Worcester, MA
Mary Dawn T. Co, M.D. is an infectious disease physician with a practice address in Worcester, Massachusetts, and NPI 1427030493, issued on Nov 16, 2005. Check the license (Massachusetts 206858, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Mary Dawn T. Co
- Credential
- M.D.
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- 206858 MA
Self-reported in NPPES; status is on the state search - Practice location
- 119 Belmont St, Worcester, MA 01605
- Phone
- (774) 441-8230
- Enumerated
- Nov 16, 2005
- Record last updated
- Apr 1, 2025
- Medicaid ID
- 110004064A MA
- Medicare enrollment
- Enrolled (PECOS I20040805000982); accepts Medicare assignment
- Medical or professional school
- Medical College Of Pennsylvania, 1994
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 487 in Massachusetts → Look up another NPI →
Also registered at 119 Belmont St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mary Dawn T. Co in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 206858Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The MIPS final score for 2023 (Medicare payment program): 97 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Umass Memorial Medical Group IncWorcester, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Dawn T. Co among 487 infectious disease physician records in Massachusetts
Mary Dawn T. Co, M.D. is one of 487 infectious disease physician records with a practice address in Massachusetts. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 83% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated1994 · median 2003 among the 296 with a school on file
- Record last updated2025 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in Massachusetts
There are 487 infectious disease physician records in Massachusetts.
All 487 in Massachusetts → Every provider in Worcester → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- David Bebinger, M.D.Worcester, MA 016051184723496
- Jennifer Daly, M.D.Worcester, MA 016051376526905
- Richard Ellison, M.D.Worcester, MA 016051548241292
- Joyce Fingeroth, M.D.Worcester, MA 016051801828322
- Sharone Green, M.D.Worcester, MA 016051992789259
- Steven Hatch, MDWorcester, MA 016051578514774
- Mark Klempner, M.D.Worcester, MA 016051740267582
- Lawrence Madoff, MDWorcester, MA 016051720044050
Common questions
What is Mary Dawn T. Co, M.D.'s NPI number?
Mary Dawn T. Co, M.D.'s National Provider Identifier (NPI) is 1427030493, issued on Nov 16, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mary Dawn T. Co, M.D. located?
The NPPES record lists a practice address at 119 Belmont St, Worcester, MA, 01605. Phone: (774) 441-8230. Providers update this record themselves, so call before visiting.
How can I verify Mary Dawn T. Co, M.D.'s license?
NPPES lists Massachusetts license number 206858, 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.
What is Mary Dawn T. Co, M.D.'s MIPS final score?
The 2023 MIPS final score is 97 of 100. 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.