Melissa J Williams, M.D.

Hematology & Oncology

Internal Medicine

Melissa J Williams is a Hematology & Oncology specialist based in Sacramento, CA with over 25 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.

(916) 453-3300Sacramento, CA
Telehealth Available
NPI Active per CMS — Q2 2026|Medicare Enrolled|Order & Refer

With over 25 years in internal medicine, Melissa J Williams, M.D. is a long-established hematology & oncology specialist in Sacramento. A University of Wisconsin School of Medicine graduate since 2001, she brings 25+ years of experience. CMS Medicare data shows her patients commonly have cancer, high cholesterol, and hypertension.

At a glance

  • Uses generic medications more than 63% of reporting doctors in California
  • Virtual visits available — no app or travel required
1 of 796 Internal Medicine providers in CASee all Internal Medicine in Sacramento25+ years experienceNPI since 2008

Older · 3952dNPPES updated 2015-07-29 · verify NPI on CMS · Verify license at Medical Board of California

Contact & Location

Practice Location

2800 L St Suite 300, Sacramento, CA 95816-5616

Fax: (916) 454-6822
CMS Clinical Data

How Does This Doctor Compare?

Based on Medicare data, this doctor favors affordable generic drugs over brand-name ones.

Opioid Rx

↓ Lower = better

5.02%

California avg: 5.2 · US avg: 5.1

Higher than most doctors nationally(-0.1 pts)

5.02% of this doctor's prescriptions are opioid pain medications. Lower means more cautious prescribing.

Generic Rx

↑ Higher = better

89.6%

California avg: 83.3 · US avg: 82.8

Higher than most doctors nationally(+6.8 pts)

Typical range among reporting doctors in California

How often this doctor prescribes affordable generic drugs instead of expensive brand-name ones.

Medicare Patients

366

Unique beneficiaries

Standard volume

Prescription Recipients

236

Patients prescribed

Prescriptions Written

1,195

Total claims

Total Medicare drug cost: $1.33M

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.

Patient Condition Panel

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 Cancer, High Cholesterol, and Hypertension.

Cancer
Higher than avg (+54%)75%

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

High Cholesterol
Lower than avg (-12%)58%

Elevated cholesterol or triglycerides that increase heart disease risk

US avg: 70.4%

↓ Fewer patients than average (-12%) — less common here

Hypertension
Lower than avg (-17%)53%

High blood pressure — a leading risk factor for heart disease and stroke

US avg: 70.2%

↓ Fewer patients than average (-17%) — less common here

Arthritis
Lower than avg (-2%)47%

Joint inflammation causing pain, swelling, and stiffness

US avg: 49.3%

↓ Fewer patients than average (-2%) — less common here

Osteoporosis
Higher than avg (+10%)28%

Weakened bones that are more prone to fractures, common in older adults

US avg: 18.1%

↑ More patients than average (+10%) — a focus area for this doctor

Diabetes
Lower than avg (-12%)22%

A condition where the body cannot properly regulate blood sugar levels

US avg: 34.5%

↓ Fewer patients than average (-12%) — less common here

Mood Disorders
22%

Conditions affecting emotional state, including depression and bipolar disorder

Chronic Kidney Disease
Lower than avg (-10%)20%

Gradual loss of kidney function over time, often linked to diabetes or hypertension

US avg: 29.6%

↓ Fewer patients than average (-10%) — less common here

GeneralBehavioralNational avg

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.

Career Journey
  1. Graduated medical school · 2001

    University of Wisconsin School of Medicine and Public Health

  2. 25 years in practice

    Experienced

Internal MedicineHematology & Oncology in SacramentoAllopathic & Osteopathic Physicians

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 Wisconsin School of Medicine (Class of 2001)

Practice Footprint

Mailing address

10470 Old Placerville Rd Suite 100, Sacramento, CA 95827-2539

Differs from practice location

Primary hospital affiliation: Acute Care Hospitals

CMS Certification Number: 190004

View hospital on Medicare Care Compare

Virtual Hematology & Oncology Care With Melissa J Williams

NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.

Schedule a virtual visit with Melissa J Williams for follow-up consultations, cholesterol management, blood pressure monitoring — no travel to Sacramento 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 Melissa J Williams

NPI records show Dr. Williams as active with telehealth listed in Sacramento, CA. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (916) 453-3300.

Verified across 4 federal data sources

Sourced from CMS NPPES · OIG LEIE · CMS Medicare Part D · CMS Physician Comparator. See Data Methodology.

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Medical Disclaimer: NPI Telehealth is a provider directory for informational purposes only. This page does not constitute medical advice, diagnosis, or treatment recommendations. Provider data is sourced from the CMS NPPES federal registry and public Medicare datasets. NPI Telehealth does not verify clinical qualifications beyond federal records. Data may not reflect real-time availability — always contact the provider's office directly to confirm details before seeking care.

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