Catharina Armstrong, MD
Catharina Armstrong is an Internal Medicine specialist based in Worcester, MA with over 23 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
Catharina Armstrong, MD has practiced internal medicine for 23+ years, working in group practice. She has been in practice for 23+ years. Among her Medicare patients, common conditions include hypertension, depression, and mood disorders (per CMS data).
Older · 1887dNPPES updated 2021-03-25 · verify NPI on CMS · Verify license at Massachusetts Board of Registration in Medicine
Contact & Location
Practice Location
119 Belmont St, Worcester, MA 01605-2903
How Does This Doctor Compare?
Medicare Patients
33
Unique beneficiaries
Boutique practicePrescription Recipients
17
Patients prescribed
Prescriptions Written
139
Total claims
Total Medicare drug cost: $35k
Data Note: Sourced from CMS Medicare Provider Utilization & Payment Data. Percentile rankings compare this provider against all peers with reported data in the same state. Updated annually to reflect the latest federal reporting cycle.
What This Doctor Treats Most
Based on Medicare claims data — here's what patients commonly see this doctor for
Based on Medicare data, this doctor primarily manages Hypertension, Depression, and Mood Disorders.
High blood pressure — a leading risk factor for heart disease and stroke
A mood disorder causing persistent sadness and loss of interest in activities
Conditions affecting emotional state, including depression and bipolar disorder
Elevated cholesterol or triglycerides that increase heart disease risk
Joint inflammation causing pain, swelling, and stiffness
Excessive worry or fear that interferes with daily life
Problematic patterns of drug or alcohol use leading to health issues
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
$66 received from industry
4 transactions reported in 2018 ·Low tier
Payments include consulting fees, speaking honoraria, food & beverage, travel, research support, and ownership interests from drug and medical device manufacturers. Disclosure is required by the federal Physician Payments Sunshine Act. These payments do not necessarily indicate conflicts of interest. National median: $338 across 136 000 tracked providers.
Tiers — Low: under $500 · Moderate: $500-5 000 · High: $5 000-25 000 · Very High: $25 000+. Source: CMS Open Payments 2018, attributed to Catharina Armstrong's NPI.
Patient Reviews
No patient reviews yet. If you've seen Catharina Armstrong, your feedback helps other patients.
Review PolicyAll feedback is moderated before publishing. We verify reviewer identity where possible and enforce a one-review-per-provider policy. Full guidelines →
Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Board certified · Mar 24, 2021
Self-reported via NPPES
23 years in practice
Experienced
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Taxonomy: 207R00000X
Mailing address
Massachusetts General Hospital 55 Fruit Street, Boston, MA 02114
Differs from practice location
Virtual Internal Medicine Care With Catharina Armstrong
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Catharina Armstrong for blood pressure monitoring, depression management, mood disorder follow-ups — no travel to Worcester required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes. Medicare enrolled per CMS records.
Frequently Asked Questions
Common questions about Catharina Armstrong
Dr. Armstrong is listed as active in the NPI registry with telehealth listed in Worcester, MA. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (508) 334-8515.
Sourced from CMS NPPES · OIG LEIE · CMS Medicare Part D · CMS Open Payments 2018 · CMS Physician Comparator. See Data Methodology.
Is this your profile?
Verify credentials, update practice details, and manage telehealth.
Medical Disclaimer: NPI Telehealth is a provider directory for informational purposes only. This page does not constitute medical advice, diagnosis, or treatment recommendations. Provider data is sourced from the CMS NPPES federal registry and public Medicare datasets. NPI Telehealth does not verify clinical qualifications beyond federal records. Data may not reflect real-time availability — always contact the provider's office directly to confirm details before seeking care.
Contact Catharina Armstrong
Practice Location
119 Belmont St, Worcester, MA 01605-2903
Mailing Address
Massachusetts General Hospital 55 Fruit Street, Boston, MA 02114
This is a provider directory. Contact the office directly to schedule appointments.
Related Providers