Catherine Helen Horwitz, MD
Emergency Medicine Physician · Weymouth, MA
Catherine Helen Horwitz, MD is an emergency medicine physician with a practice address in Weymouth, Massachusetts, and NPI 1073713632, issued on Jul 23, 2007. Check the license (Massachusetts 232442, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Catherine Helen Horwitz
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 232442 MA
Self-reported in NPPES; status is on the state search - Practice location
- 55 Fogg RD, Weymouth, MA 02190
- Phone
- (781) 624-8000
- Enumerated
- Jul 23, 2007
- Record last updated
- Aug 5, 2026
- Medicaid ID
- 2138760 MA
- Medicare enrollment
- Enrolled (PECOS I20071010000678); accepts Medicare assignment
- Medical or professional school
- Tufts University School Of Medicine, 2004
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,829 in Massachusetts → Look up another NPI →
Also registered at 55 Fogg RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kathleen Abruzese, R.N.Clinical Nurse Specialist1487773180
- Mohammad AfrasiabiSurgery Physician1063893139
- Hana Altwal, MDInternal Medicine Physician1386075091
- Samuel BabchuckRegistered Nurse1700559515
- Shannon Badgett, LCSWClinical Social Worker1972142834
Verify Catherine Helen Horwitz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 232442Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
60% fewer Medicare Part D claims than the average emergency medicine physician in 2024
91 Medicare Part D claims for 72 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
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.
Bills Medicare through 2 group practices
- Coastal Medical AssociatesWeymouth, MA
- Emergency Physician Associates OF Massachusetts PCWorcester, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Catherine Helen Horwitz among 1,829 emergency medicine physician records in Massachusetts
Catherine Helen Horwitz, MD is one of 1,829 emergency medicine physician records with a practice address in Massachusetts. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 41% of them.
- NPI issued2007 · 41% of these records are older, 51% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2004 · median 2011 among the 1,200 with a school on file
- Record last updated2026 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
33 emergency medicine physician records list a practice address in Weymouth
They are 33 of the 1,156 NPPES records with a practice address in Weymouth, and 1,829 emergency medicine physician records in Massachusetts.
All 1,829 in Massachusetts → Every provider in Weymouth → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Claudette Bibro, M.D.Weymouth, MA 021901528073988
- Wayne A D Chin, M.D.Weymouth, MA 021901205894102
- David Cingari, M.D.South Weymouth, MA 021901326006719
- Stephen Hartlaub, M.D.Weymouth, MA 021901700827953
- Jeffrey Johnson, M.D.Weymouth, MA 021901083672281
- Doreen Kennedy McLaughlin, M.D.Weymouth, MA 021901053326447
- Maurice Loeffel, MDWeymouth, MA 021901548228042
- Ann Loudermilk, M.D.Weymouth, MA 021901598702326
Common questions
What is Catherine Helen Horwitz, MD's NPI number?
Catherine Helen Horwitz, MD's National Provider Identifier (NPI) is 1073713632, issued on Jul 23, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Catherine Helen Horwitz, MD located?
The NPPES record lists a practice address at 55 Fogg RD, Weymouth, MA, 02190. Phone: (781) 624-8000. Providers update this record themselves, so call before visiting.
How can I verify Catherine Helen Horwitz, MD's license?
NPPES lists Massachusetts license number 232442, 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 Catherine Helen Horwitz, MD prescribe under Medicare Part D?
In 2024, Catherine Helen Horwitz, MD had 91 Medicare Part D claims for 72 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
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.