Christopher G Tretter, MD
Christopher G Tretter is a Hematology & Oncology specialist based in South Portland, ME with over 32 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
Also practices: INTERNAL MEDICINE
With over 32 years in internal medicine, Christopher G Tretter, MD is a long-established hematology & oncology specialist in South Portland. Trained at Mcgill University, Faculty of Medicine (class of 1994), he has been practicing for over 32 years. CMS Medicare data shows his patients commonly have hypertension, cancer, and high cholesterol. CMS MIPS quality score: 91.42/100 (2023).
At a glance
- Federal MIPS score higher than 22% of MIPS-scored doctors in Maine
- Virtual visits available — no app or travel required
Older · 921dNPPES updated 2023-11-15 · verify NPI on CMS · Verify license at Maine Board of Licensure in Medicine
Contact & Location
Practice Location
Mainehealth Cancer Care 265 Western Ave Suite 2, South Portland, ME 04106
How Does This Doctor Compare?
MIPS Score
202391.42/100
Maine avg: 93.9 · US avg: 83.6
✓ Higher than most doctors nationally(+7.8 pts)
How the government rates this doctor's Medicare care quality. Scores above 75 are considered good.
Opioid Rx
↓ Lower = better5.06%
Maine avg: 5 · US avg: 5.1
≈ Same as national average
5.06% of this doctor's prescriptions are opioid pain medications. Lower means more cautious prescribing.
Medicare Patients
316
Unique beneficiaries
Standard volumePrescription Recipients
143
Patients prescribed
Prescriptions Written
929
Total claims
Total Medicare drug cost: $1.17M
Percentile rankings compared against 387 reporting peers in Maine.
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, Cancer, and High Cholesterol.
High blood pressure — a leading risk factor for heart disease and stroke
US avg: 70.2%↑ More patients than average (+5%) — a focus area for this doctor
Diseases involving abnormal cell growth with potential to spread to other body parts
US avg: 20.8%↑ More patients than average (+54%) — a focus area for this doctor
Elevated cholesterol or triglycerides that increase heart disease risk
US avg: 70.4%↑ More patients than average (+1%) — a focus area for this doctor
Gradual loss of kidney function over time, often linked to diabetes or hypertension
US avg: 29.6%↑ More patients than average (+9%) — a focus area for this doctor
Joint inflammation causing pain, swelling, and stiffness
US avg: 49.3%↓ Fewer patients than average (-14%) — less common here
Reduced blood flow to the heart muscle, commonly known as coronary artery disease
US avg: 31.7%A condition where the body cannot properly regulate blood sugar levels
US avg: 34.5%↓ 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 (-10%) — less common here
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Graduated medical school · 1994
Mcgill University, Faculty of Medicine
Board certified · Nov 12, 2023
Self-reported via NPPES
32 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
Mcgill University, Faculty of Medicine (Class of 1994)
Virtual Hematology & Oncology Care With Christopher G Tretter
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Christopher G Tretter for blood pressure monitoring, follow-up consultations, cholesterol management — no travel to South Portland 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 Christopher G Tretter
Dr. Tretter is listed as active in the NPI registry with telehealth listed in South Portland, ME. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (207) 661-0200.
Sourced from CMS NPPES · OIG LEIE · CMS QPP 2023 · CMS Medicare Part D · CMS Physician Comparator. See Data Methodology.
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Contact Christopher G Tretter
Practice Location
Mainehealth Cancer Care 265 Western Ave Suite 2, South Portland, ME 04106
Mailing Address
Mainehealth Cancer Care 265 Western Ave Suite 2, South Portland, ME 04106
This is a provider directory. Contact the office directly to schedule appointments.
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