Catherine Diamond, MD
Infectious Disease Internal Medicine
Catherine Diamond is an Infectious Disease Internal Medicine specialist based in Orange, CA with over 35 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
Also practices: INFECTIOUS DISEASE
Catherine Diamond, MD has been part of the Orange medical community since 2006 in group practice. Trained at Albany Medical College of Union University (class of 1991), she has been practicing for over 35 years. Among her Medicare patients, common conditions include high cholesterol, hypertension, and mood disorders (per CMS data). CMS MIPS quality score: 100/100 (2023).
At a glance
- Prescribes opioids less than 26% of reporting doctors in California
- Federal MIPS score higher than 93% of MIPS-scored doctors in California
- Virtual visits available — no app or travel required
Older · 6620dNPPES updated 2008-04-08 · verify NPI on CMS · Verify license at Medical Board of California
Contact & Location
Practice Location
Uci Medical Center 101 the City Drive South, Orange, CA 92868
How Does This Doctor Compare?
Based on Medicare data, this doctor scores better than 93% of doctors in California on federal quality measures, prescribes opioid pain medications conservatively.
MIPS Score
2023100/100
California avg: 78.6 · US avg: 83.6
✓ Higher than most doctors nationally(+16.4 pts)
Top 7% of MIPS-scored doctors in CaliforniaHow the government rates this doctor's Medicare care quality. Scores above 75 are considered good.
Opioid Rx
↓ Lower = better3.71%
California avg: 5.2 · US avg: 5.1
✓ Higher than most doctors nationally(-1.4 pts)
3.71% of this doctor's prescriptions are opioid pain medications. Lower means more cautious prescribing.
Generic Rx
↑ Higher = better66.3%
California avg: 83.3 · US avg: 82.8
⚠ Lower than most doctors nationally(-16.5 pts)
How often this doctor prescribes affordable generic drugs instead of expensive brand-name ones.
Medicare Patients
108
Unique beneficiaries
Standard volumePrescription Recipients
120
Patients prescribed
Prescriptions Written
4,827
Total claims
Total Medicare drug cost: $5.50M
Percentile rankings compared against 9,360 reporting peers in California.
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 Mood Disorders.
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%↓ Fewer patients than average (-8%) — less common here
Conditions affecting emotional state, including depression and bipolar disorder
Joint inflammation causing pain, swelling, and stiffness
US avg: 49.3%↓ Fewer patients than average (-12%) — less common here
A mood disorder causing persistent sadness and loss of interest in activities
US avg: 31.8%↑ More patients than average (+5%) — a focus area for this doctor
A condition where the body cannot properly regulate blood sugar levels
US avg: 34.5%↑ 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 (+3%) — a focus area for this doctor
Excessive worry or fear that interferes with daily life
US avg: 34.1%↓ Fewer patients than average (-7%) — 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 · 1991
Albany Medical College
35 years in practice
Senior practitioner
Infectious disease specialists diagnose and treat complex infections including HIV/AIDS, hepatitis, tuberculosis, antibiotic-resistant infections (MRSA), post-surgical infections, and travel-related illnesses. They also provide pre-travel vaccination counseling and manage infections in immunocompromised patients.
Taxonomy: 207RI0200X
Education & Training
Albany Medical College of Union University (Class of 1991)
Mailing address
Uci Department of Medicine Po Box 54509, Los Angeles, CA 90054-4509
Differs from practice location
Primary hospital affiliation: Psychiatric
CMS Certification Number: 194098
View hospital on Medicare Care CompareVirtual Infectious Disease Care With Catherine Diamond
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Catherine Diamond for cholesterol management, blood pressure monitoring, mood disorder follow-ups — no travel to Orange 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 Catherine Diamond
NPI records show Dr. Diamond as active with telehealth listed in Orange, CA. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (714) 456-8978.
Sourced from CMS NPPES · OIG LEIE · CMS QPP 2023 · CMS Medicare Part D · CMS Physician Comparator. See Data Methodology.
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Contact Catherine Diamond
Practice Location
Uci Medical Center 101 the City Drive South, Orange, CA 92868
Mailing Address
Uci Department of Medicine Po Box 54509, Los Angeles, CA 90054-4509
This is a provider directory. Contact the office directly to schedule appointments.
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