Physician Profile
Justin Peng, MD
Unclaimed ProfileAbout Dr. Peng
Based in Washington, DC, Justin Peng, MD is listed in the NPI registry under rheumatology. Justin graduated from Boston University School of Medicine in 2005. Medicare claims data shows Justin provided 39,998 services to 3,016 patients. The services billed most often include injection, tocilizumab, 1 mg, injection, denosumab, 1 mg, and injection, methylprednisolone acetate, 1 mg.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (301) 942-7600
- Email not available
Practice Locations
2021 K ST NW SUITE 300
Washington, DC 20006
8270 Willow Oaks Corporate Dr Ste 150
Fairfax, VA 22031
Conditions Commonly Evaluated or Treated
Within Rheumatology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
Autoimmune
- Antiphospholipid Syndrome
- Behçet's Disease
- Dermatomyositis
- Dry Eyes and Mouth
- Granulomatosis with Polyangiitis
- IgA Vasculitis
- IgG4-Related Disease
- Inflammatory myopathy
- Lupus Butterfly Rash
- Positive ANA Blood Test
- Relapsing Polychondritis
Bone
Bone Health
Connective Tissue
- Hypermobility Syndrome
- Mixed Connective Tissue Disease
- Scleroderma skin disease
- Undifferentiated Connective Tissue Disease
Genetic & Connective Tissue
Inflammatory
Joints
- Baker's Cyst
- Chronic Joint Pain
- Enteropathic Arthritis
- Juvenile Idiopathic Arthritis
- Morning Joint Stiffness
- Palindromic Rheumatism
- Pseudogout
- Reactive Arthritis
- Swollen Fingers or Toes
- Swollen Joints
Nerve & Tendon
Skin & Soft Tissue
Skin & Vascular
Soft Tissue
Spine & Back
Vascular
Procedures & services
Most searched procedures
Consultation
Consultations
Diagnostics & Injections
- Baker's Cyst Aspiration
- Bursa injection
- Carpal tunnel steroid injection
- Joint injection or aspiration
- Knee Joint Injection
- Nailfold Capillaroscopy
- Sacroiliac joint injection
- Salivary Gland Biopsy
- Tendon Sheath Injection
Education & Support
Imaging
Injections
- Ankle Joint Injection
- Finger Joint Injections
- Shoulder Cortisone Injection
- Ultrasound-guided hip injection
- Wrist Cortisone Injection
Lab & Diagnostics
- ANCA Blood Test
- Anti-CCP Antibody Test
- HLA-B27 Genetic Test
- Inflammation Blood Tests
- Joint Fluid Analysis
- Lupus Skin Biopsy
- Myositis Antibody Panel
- Rheumatoid Factor Blood Test
Lab Work
Medication Management
- Biologic medication management
- DMARD Medication Management
- Gout Flare Treatment Plan
- Immunosuppressant Drug Monitoring
- Prolia Injection for Osteoporosis
- Reclast Infusion for Osteoporosis
- Steroid Taper Management
Pain Relief
Regenerative Medicine
Procedures Most Often Billed to Medicare
39,998 services · 3,016 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
458 | More often than most peers in Rheumatology |
| Destruction of peripheral nerve or branch | Procedure | 64640 |
108 | Too few peers to compare |
| Dxa bone density measurement of hip, pelvis, spine | Imaging | 77080 |
166 | More often than most peers in Rheumatology |
| X-ray of hand, minimum of 3 views | Imaging | 73130 |
74 | As often as other peers in Rheumatology |
| X-ray of knee, 3 views | Imaging | 73562 |
64 | More often than most peers in Rheumatology |
| Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle | Treatment | 96401 |
186 | As often as other peers in Rheumatology |
| Administration of chemotherapy into vein, 1 hour or less | Treatment | 96413 |
170 | As often as other peers in Rheumatology |
| Administration of chemotherapy into vein, each additional hour | Treatment | 96415 |
77 | Less often than most peers in Rheumatology |
| Injection, tocilizumab, 1 mg | Drug given | J3262 |
18,440 | Less often than most peers in Rheumatology |
| Injection, denosumab, 1 mg | Drug given | J0897 |
8,040 | More often than most peers in Rheumatology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other rheumatologists at this location 1
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 4
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 32 related providers in 4 groups
Other rheumatologists in Washington 8
Same specialty, same city.
Trained at Boston University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2005 at Boston University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Insertion of needle into vein for collection of blood sample 8
Providers in DC who bill this service to Medicare most often.
Common questions
What is Dr. Peng's specialty?
Dr. Peng is a rheumatologist in Washington, DC. That is the designation recorded for this NPI in the federal registry, where it is listed as “Rheumatology”.
NPI registry
Where can I find Dr. Peng?
Dr. Peng is listed at 2021 K St Nw Suite 300, Washington, DC 20006. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Peng?
The number on file is (301) 942-7600. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Peng?
Dr. Peng's National Provider Identifier is 1538328141. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Dr. Peng's medical education?
Dr. Peng attended Boston University School of Medicine, graduating in 2005. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Peng have?
Dr. Peng has 21 years experience. Calculated from a graduation year of 2005, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Peng known for?
According to Medicare billing data, Dr. Peng performs procedures including insertion of needle into vein for collection of blood sample and destruction of peripheral nerve or branch; reads or performs imaging such as dxa bone density measurement of hip, pelvis, spine and x-ray of hand, minimum of 3 views; provides treatments such as administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle and administration of chemotherapy into vein, 1 hour or less, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Peng's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Peng. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.