Doreen B Brettler, M.D.
Doreen B Brettler is a Hematology & Oncology specialist based in Worcester, MA with over 53 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
Patients across MA can see Doreen B Brettler, M.D. in person in Worcester or via virtual visit — no travel required. A Stanford University School of Medicine graduate since 1973, she brings 53+ years of experience. She regularly sees Medicare patients with high cholesterol, hypertension, and arthritis (per CMS claims data). CMS MIPS quality score: 97.02/100 (2023).
At a glance
- Prescribes opioids less than 17% of reporting doctors in Massachusetts
- Federal MIPS score higher than 76% of MIPS-scored doctors in Massachusetts
- Virtual visits available — no app or travel required
Older · 1160dNPPES updated 2023-03-20 · verify NPI on CMS · Verify license at Massachusetts Board of Registration in Medicine
Contact & Location
Practice Location
55 Lake Ave N, Worcester, MA 01655-0002
How Does This Doctor Compare?
Based on Medicare data, this doctor scores better than 76% of doctors in Massachusetts on federal quality measures, prescribes opioid pain medications conservatively.
MIPS Score
202397.02/100
Massachusetts avg: 87.4 · US avg: 83.6
✓ Higher than most doctors nationally(+13.4 pts)
Better than 76% of MIPS-scored doctors in MassachusettsHow the government rates this doctor's Medicare care quality. Scores above 75 are considered good.
Opioid Rx
↓ Lower = better4.84%
Massachusetts avg: 4 · US avg: 5.1
✓ Higher than most doctors nationally(-0.3 pts)
4.84% of this doctor's prescriptions are opioid pain medications. Lower means more cautious prescribing.
Generic Rx
↑ Higher = better63.4%
Massachusetts avg: 81.9 · US avg: 82.8
⚠ Lower than most doctors nationally(-19.4 pts)
How often this doctor prescribes affordable generic drugs instead of expensive brand-name ones.
Medicare Patients
305
Unique beneficiaries
Standard volumePrescription Recipients
80
Patients prescribed
Prescriptions Written
475
Total claims
Total Medicare drug cost: $2.31M
Percentile rankings compared against 1,606 reporting peers in Massachusetts.
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 High Cholesterol, Hypertension, and Arthritis.
Elevated cholesterol or triglycerides that increase heart disease risk
US avg: 70.4%↑ More patients than average (+5%) — a focus area for this doctor
High blood pressure — a leading risk factor for heart disease and stroke
US avg: 70.2%↑ More patients than average (+2%) — a focus area for this doctor
Joint inflammation causing pain, swelling, and stiffness
US avg: 49.3%↓ Fewer patients than average (-7%) — less common here
Gradual loss of kidney function over time, often linked to diabetes or hypertension
US avg: 29.6%↓ Fewer patients than average (-1%) — less common here
Reduced blood flow to the heart muscle, commonly known as coronary artery disease
US avg: 31.7%↓ Fewer patients than average (-4%) — less common here
Excessive worry or fear that interferes with daily life
US avg: 34.1%↓ Fewer patients than average (-7%) — less common here
Conditions affecting emotional state, including depression and bipolar disorder
A condition where the body cannot properly regulate blood sugar levels
US avg: 34.5%↓ Fewer patients than average (-12%) — less common here
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
$114 received from industry
1 transaction reported in 2024 ·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 2024, attributed to Doreen B Brettler's NPI.
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Graduated medical school · 1973
Stanford University School of Medicine
Board certified · Mar 19, 2023
Self-reported via NPPES
53 years in practice
Senior practitioner
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
Taxonomy: 207RH0003X
Education & Training
Stanford University School of Medicine (Class of 1973)
Mailing address
Po Box 415348, Boston, MA 02241-5348
Differs from practice location
Virtual Hematology & Oncology Care With Doreen B Brettler
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Doreen B Brettler for cholesterol management, blood pressure monitoring, arthritis 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 Doreen B Brettler
NPI records show Dr. Brettler as active with telehealth listed in Worcester, MA. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (508) 334-3550.
Sourced from CMS NPPES · OIG LEIE · CMS QPP 2023 · CMS Medicare Part D · CMS Open Payments 2024 · CMS Physician Comparator. See Data Methodology.
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Contact Doreen B Brettler
Practice Location
55 Lake Ave N, Worcester, MA 01655-0002
Mailing Address
Po Box 415348, Boston, MA 02241-5348
This is a provider directory. Contact the office directly to schedule appointments.
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