Physician Profile
Unclaimed ProfileAbout BARON
Ari D Baron, M.D. is a healthcare provider in San Francisco, CA specialising in hematology/oncology. Ari trained at Tufts University School of Medicine, graduating in 1990. Ari is also listed as specialising in specialist. According to Medicare claims data, Ari cared for 1,625 Medicare patients across 87,524 services.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Common questions
What does Dr. Baron specialise in?
Dr. Baron is a hematology/oncology in San Francisco, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “HEMATOLOGY/ONCOLOGY”.
NPI registry
Where is Dr. Baron located?
Dr. Baron is listed at 2100 WEBSTER STREET SUITE 225, San Francisco, CA 94115. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Baron's phone number?
The number on file is (415) 923-3012. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Baron's NPI number?
Dr. Baron's National Provider Identifier is 1013086420. 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
Where did Dr. Baron go to medical school?
Dr. Baron attended Tufts University School of Medicine, graduating in 1990. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Baron been practising?
Dr. Baron has 36 years experience. Calculated from a graduation year of 1990, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Baron do most often?
According to Medicare billing data, Dr. Baron provides treatments such as administration of chemotherapy into vein, 1 hour or less and injection of drug or substance 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
Has Dr. Baron confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Baron. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (415) 923-3012
- Email not available
Practice Locations
2100 WEBSTER STREET SUITE 225
San Francisco, CA 94115
Procedures Most Often Billed to Medicare
87,524 services · 1,625 patients · 25 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Administration of chemotherapy into vein, 1 hour or less | Treatment | 96413 |
456 |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
454 |
| Injection of additional new drug or substance into vein | Treatment | 96375 |
289 |
| Administration of additional new drug or substance into vein, 1 hour or less | Treatment | 96417 |
230 |
| Administration of chemotherapy into vein, each additional hour | Treatment | 96415 |
192 |
| Infusion into a vein for therapy, prevention, or diagnosis, additional sequential infusion, 1 hour or less | Treatment | 96367 |
181 |
| Administration of hormonal anti-neoplastic chemotherapy under skin or into muscle | Treatment | 96402 |
145 |
| Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle | Treatment | 96401 |
144 |
| Administration of prolonged chemotherapy into vein | Treatment | 96416 |
126 |
| Injection, darbepoetin alfa, 1 microgram (non-esrd use) | Drug given | J0881 |
20,228 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
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Claim this profileRelated providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Related specialists at this location 1
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.
Other hematology/oncology specialists in San Francisco 8
Same specialty, same city.
More connections — 23 related providers in 3 groups
Trained at Tufts University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1990 at Tufts University School of Medicine 7
Providers who graduated from the same medical school in the same year.
Also performs Administration of chemotherapy into vein, 1 hour or less 8
Providers in CA who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.