James Melvin Long, M.D.
Also practices: INTERNAL MEDICINE
James Melvin Long, M.D. runs an independent hematology & oncology specialist practice in Vacaville, CA. She graduated from University of Texas Medical Branch at Galveston in 1984 and has 42+ years of clinical experience. Among her Medicare patients, common conditions include hypertension, high cholesterol, and cancer (per CMS data).
Older · 868dNPPES updated 2023-12-21 · verify on CMS
Contact & Location
Practice Location
1020 Nut Tree Rd Ste 390, Vacaville, CA 95687-4100
How Does This Doctor Compare?
Opioid Rx
↓ Lower = better18.96%
California avg: 5.2 · US avg: 5.1
⚠ Lower than most doctors nationally(+13.9 pts)
18.96% of this doctor's prescriptions are opioid pain medications. Lower means more cautious prescribing.
Medicare Patients
314
Unique beneficiaries
Standard volumePrescription Recipients
185
Patients prescribed
Prescriptions Written
1,266
Total claims
Total Medicare drug cost: $1.50M
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 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%↑ More patients than average (+1%) — 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 (+28%) — a focus area for this doctor
Joint inflammation causing pain, swelling, and stiffness
US avg: 49.3%↓ Fewer patients than average (-8%) — less common here
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
A condition where the body cannot properly regulate blood sugar levels
US avg: 34.5%↑ More patients than average (+2%) — a focus area for this doctor
Reduced blood flow to the heart muscle, commonly known as coronary artery disease
US avg: 31.7%↓ Fewer patients than average (-3%) — less common here
Conditions affecting emotional state, including depression and bipolar disorder
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
$134 received from industry
6 transactions 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 James Melvin Long's NPI.
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Graduated medical school · 1984
University of Texas Medical Branch
Board certified · Dec 20, 2023
CMS-verified certification date
42 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
University of Texas Medical Branch at Galveston (Class of 1984)
Mailing address
1200 B Gale Wilson Blvd, Fairfield, CA 94533-3552
Differs from practice location
Primary hospital affiliation: Psychiatric
CMS Certification Number: 194109
View hospital on Medicare Care CompareVirtual Hematology & Oncology Care With James Melvin Long
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with James Melvin Long for blood pressure monitoring, cholesterol management, follow-up consultations — no travel to Vacaville 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 James Melvin Long
NPI records show Dr. Long as active with telehealth listed in Vacaville, CA. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (707) 624-8000.
Sourced from CMS NPPES · OIG LEIE · CMS Medicare Part D · CMS Open Payments 2024 · CMS Physician Comparator. See Data Methodology.
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Contact James Melvin Long
Practice Location
1020 Nut Tree Rd Ste 390, Vacaville, CA 95687-4100
Mailing Address
1200 B Gale Wilson Blvd, Fairfield, CA 94533-3552
This is a provider directory. Contact the office directly to schedule appointments.
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