Physician Profile
Arash A. Horizon, M.D.
Unclaimed ProfileAbout Dr. Horizon
Arash A. Horizon, M.D. is a healthcare provider in Los Angeles, CA specializing in rheumatology. Arash trained at University of California, San Diego School of Medicine, graduating in 1998. Medicare claims data shows Arash provided 464,865 services to 4,374 patients. The services billed most often include injection, certolizumab pegol, 1 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered), injection, ferric carboxymaltose, 1 mg, and injection, romosozumab-aqqg, 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
- (310) 659-7878
- Email not available
Practice Locations
8640 W 3RD ST SUITE 300
Los Angeles, CA 90048
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
464,865 services · 4,374 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
1,813 | More than most peers in Rheumatology |
| Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle | Treatment | 96401 |
1,879 | More than most peers in Rheumatology |
| Injection, certolizumab pegol, 1 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered) | Drug given | J0717 |
174,400 | More than most peers in Rheumatology |
| Injection, ferric carboxymaltose, 1 mg | Drug given | J1439 |
51,000 | Too few peers to compare |
| Injection, romosozumab-aqqg, 1 mg | Drug given | J3111 |
47,460 | More than most peers in Rheumatology |
| Injection, tocilizumab, 1 mg | Drug given | J3262 |
42,521 | As often as other peers in Rheumatology |
| Injection, vedolizumab, intravenous, 1 mg | Drug given | J3380 |
26,400 | More often than most peers in Rheumatology |
| Injection, immune globulin (privigen), intravenous, non-lyophilized (e.g., liquid), 500 mg | Drug given | J1459 |
22,660 | Too few peers to compare |
| Injection, infliximab, excludes biosimilar, 10 mg | Drug given | J1745 |
15,241 | More than most peers in Rheumatology |
| Injection, secukinumab, intravenous, 1 mg | Drug given | J3247 |
14,000 | 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.
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.
Other rheumatologists in Los Angeles 8
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at University of California, San Diego School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1998 at University of California, San Diego 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 CA who bill this service to Medicare most often.
Common questions
What is Arash A. Horizon's specialty?
Arash A. Horizon is a rheumatologist in Los Angeles, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Rheumatology”.
NPI registry
Where can I find Arash A. Horizon?
Arash A. Horizon is listed at 8640 W 3Rd St Suite 300, Los Angeles, CA 90048. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Arash A. Horizon?
The number on file is (310) 659-7878. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Arash A. Horizon?
Arash A. Horizon's National Provider Identifier is 1881694131. 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 Arash A. Horizon's education?
Arash A. Horizon attended University of California, San Diego School of Medicine, graduating in 1998. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Arash A. Horizon have?
Arash A. Horizon has 28 years experience. Calculated from a graduation year of 1998, reported in the CMS National Downloadable File.
CMS public data
What is Arash A. Horizon known for?
According to Medicare billing data, Arash A. Horizon performs procedures including insertion of needle into vein for collection of blood sample; provides treatments such as administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Arash A. Horizon's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Arash A. Horizon. 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.