Michael Hsi-Ming Yen, M.D., PH.D.
Michael Hsi-Ming Yen is a Hematology & Oncology specialist based in Santa Cruz, CA with over 26 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
Also practices: HEMATOLOGY/ONCOLOGY
With over 26 years in internal medicine, Michael Hsi-Ming Yen, M.D., PH.D. is a long-established hematology & oncology specialist in Santa Cruz. Trained at University of California, San Diego School of Medicine (class of 2000), he has been practicing for over 26 years. CMS Medicare data shows his patients commonly have hypertension, high cholesterol, and cancer. CMS MIPS quality score: 82.14/100 (2023).
At a glance
- Federal MIPS score higher than 49% of MIPS-scored doctors in California
- Virtual visits available — no app or travel required
Older · 5118dNPPES updated 2012-05-18 · verify NPI on CMS · Verify license at Medical Board of California
Contact & Location
Practice Location
1669 Dominican Way, Santa Cruz, CA 95065-1523
How Does This Doctor Compare?
Based on Medicare data, this doctor has an average quality score compared to other doctors in California.
MIPS Score
202382.14/100
California avg: 78.6 · US avg: 83.6
⚠ Lower than most doctors nationally(-1.5 pts)
Average range among MIPS-scored doctors in CaliforniaHow the government rates this doctor's Medicare care quality. Scores above 75 are considered good.
Opioid Rx
↓ Lower = better6.18%
California avg: 5.2 · US avg: 5.1
⚠ Lower than most doctors nationally(+1.1 pts)
6.18% of this doctor's prescriptions are opioid pain medications. Lower means more cautious prescribing.
Medicare Patients
364
Unique beneficiaries
Standard volumePrescription Recipients
138
Patients prescribed
Prescriptions Written
680
Total claims
Total Medicare drug cost: $3.05M
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 Hypertension, High Cholesterol, and Cancer.
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
Elevated cholesterol or triglycerides that increase heart disease risk
US avg: 70.4%↓ Fewer patients than average (-2%) — less common here
Diseases involving abnormal cell growth with potential to spread to other body parts
US avg: 20.8%↑ More patients than average (+19%) — a focus area for this doctor
Joint inflammation causing pain, swelling, and stiffness
US avg: 49.3%↓ Fewer patients than average (-15%) — less common here
A condition where the body cannot properly regulate blood sugar levels
US avg: 34.5%↓ Fewer patients than average (-1%) — less common here
Gradual loss of kidney function over time, often linked to diabetes or hypertension
US avg: 29.6%↓ Fewer patients than average (-3%) — less common here
Conditions affecting emotional state, including depression and bipolar disorder
An irregular, often rapid heartbeat that increases the risk of stroke
US avg: 22%↓ Fewer patients than average (-1%) — less common here
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
$3.1k received from industry
127 transactions reported in 2024 ·Moderate 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 Michael Hsi-Ming Yen's NPI.
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Graduated medical school · 2000
University of California, San Diego School of Medicine
26 years in practice
Experienced
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
University of California, San Diego School of Medicine (Class of 2000)
Primary hospital affiliation: Critical Access Hospitals
CMS Certification Number: 191301
View hospital on Medicare Care CompareVirtual Hematology & Oncology Care With Michael Hsi-Ming Yen
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Michael Hsi-Ming Yen for blood pressure monitoring, cholesterol management, follow-up consultations — no travel to Santa Cruz 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 Michael Hsi-Ming Yen
Dr. Yen is listed as active in the NPI registry with telehealth listed in Santa Cruz, CA. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (831) 475-2220.
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 Michael Hsi-Ming Yen
Practice Location
1669 Dominican Way, Santa Cruz, CA 95065-1523
Mailing Address
1669 Dominican Way, Santa Cruz, CA 95065-1523
This is a provider directory. Contact the office directly to schedule appointments.
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