Justin Peng, MD
Rheumatology Internal Medicine
Justin Peng is a Rheumatology Internal Medicine specialist based in Washington, DC with over 21 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
Justin Peng, MD has been part of the Washington medical community since 2008 in group practice. A Boston University School of Medicine graduate since 2005, he brings 21+ years of experience. He regularly sees Medicare patients with high cholesterol, arthritis, and hypertension (per CMS claims data). CMS MIPS quality score: 77.12/100 (2023).
At a glance
- Prescribes opioids less than 19% of reporting doctors in District of Columbia
- Uses generic medications more than 58% of reporting doctors in District of Columbia
- Federal MIPS score higher than 40% of MIPS-scored doctors in District of Columbia
- Virtual visits available — no app or travel required
Older · 109dNPPES updated 2026-02-05 · verify NPI on CMS · Verify license at DC Board of Medicine
Contact & Location
Practice Location
2021 K St Nw Suite 300, Washington, DC 20006-1003
How Does This Doctor Compare?
Based on Medicare data, this doctor has an average quality score compared to other doctors in District of Columbia, prescribes opioid pain medications conservatively, favors affordable generic drugs over brand-name ones.
MIPS Score
202377.12/100
District of Columbia avg: 80.6 · US avg: 83.6
⚠ Lower than most doctors nationally(-6.5 pts)
Average range among MIPS-scored doctors in District of ColumbiaHow the government rates this doctor's Medicare care quality. Scores above 75 are considered good.
Opioid Rx
↓ Lower = better4.32%
District of Columbia avg: 3.8 · US avg: 5.1
✓ Higher than most doctors nationally(-0.8 pts)
4.32% of this doctor's prescriptions are opioid pain medications. Lower means more cautious prescribing.
Generic Rx
↑ Higher = better86.6%
District of Columbia avg: 80.4 · US avg: 82.8
✓ Higher than most doctors nationally(+3.8 pts)
Typical range among reporting doctors in District of ColumbiaHow often this doctor prescribes affordable generic drugs instead of expensive brand-name ones.
Medicare Patients
555
Unique beneficiaries
High volumePrescription Recipients
150
Patients prescribed
Prescriptions Written
672
Total claims
Total Medicare drug cost: $812k
Percentile rankings compared against 449 reporting peers in District of Columbia.
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, Arthritis, and Hypertension.
Elevated cholesterol or triglycerides that increase heart disease risk
US avg: 70.4%↑ More patients than average (+5%) — a focus area for this doctor
Joint inflammation causing pain, swelling, and stiffness
US avg: 49.3%↑ More patients than average (+26%) — 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 (-9%) — less common here
Weakened bones that are more prone to fractures, common in older adults
US avg: 18.1%↑ More patients than average (+28%) — 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 (-12%) — less common here
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
$36 received from industry
1 transaction 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 Justin Peng's NPI.
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Graduated medical school · 2005
Boston University Chobanian & Avedisian School of Medicine
Board certified · Feb 4, 2026
Self-reported via NPPES
21 years in practice
Experienced
Rheumatologists treat autoimmune and inflammatory conditions including rheumatoid arthritis, lupus, psoriatic arthritis, gout, osteoarthritis, and vasculitis. They manage biologic therapies and joint-preserving treatments.
Taxonomy: 207RR0500X
Education & Training
Boston University School of Medicine (Class of 2005)
Mailing address
7361 Calhoun Pl Ste 600, Rockville, MD 20855-2788
Differs from practice location
Virtual Internal Medicine Care With Justin Peng
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Justin Peng for cholesterol management, arthritis follow-ups, blood pressure monitoring — no travel to Washington 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 Justin Peng
Dr. Peng is listed as active in the NPI registry with telehealth listed in Washington, DC. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (301) 942-7600.
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 Justin Peng
Practice Location
2021 K St Nw Suite 300, Washington, DC 20006-1003
Mailing Address
7361 Calhoun Pl Ste 600, Rockville, MD 20855-2788
This is a provider directory. Contact the office directly to schedule appointments.
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