Quick answers
- Does Richard J. Chang accept Medicare assignment?
- Yes. Medicare's clinician data says Richard J. Chang accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Richard J. Chang see?
- In 2024, CMS data shows 371 Original Medicare patients and 645 services for Richard J. Chang. This counts Original Medicare only and measures volume, not quality.
- What is Richard J. Chang's NPI number?
- 1043639180. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Richard J. Chang, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 371 |
|---|---|
| Services billed to Medicare | 645 |
| Different services or procedures | 19 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)276 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)99 services
- Sleep study including heart rate, breathing, and sleep time (95800)69 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)45 services
- Therapy procedure using a positive pressure ventilator (94660)44 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol75%
- High blood pressure73%
- Arthritis51%
- Diabetes30%
- Ischemic heart disease30%
- Atrial fibrillation25%
Hospitals where Richard J. Chang works
Medicare's Facility Affiliation Data lists Richard J. Chang at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Virginia Hospital CenterArlington, VA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 490050
Practice locations
Addresses where Richard J. Chang is enrolled with Medicare (CMS data updated October 2, 2026).
- 1625 N George Mason DrArlington, VA 22205 (703) 521‑6662
- 3301 Wilson BlvdArlington, VA 22201 (703) 243‑6720
- 500 W Annandale RdFalls Church, VA 22046 (703) 521‑6662
- 9470 Annapolis Rd, Suite 309Lanham, MD 20706 (202) 832‑1800
- 950 N Glebe Rd, Suite 700Arlington, VA 22203
Group practices
Medicare enrollment lists Richard J. Chang as a member of this group (CMS data updated October 2, 2026).
- Privia Medical Group, LLC1,533 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Arlington
Clinicians with the same Medicare primary specialty in Arlington, VA — not a recommendation.
Other clinicians in Privia Medical Group, LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | New York Medical College |
| Graduation year | 2014 (12 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1043639180 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians