Physician Profile
Claudia Tellez, MD practices hematology & oncology in Chicago, IL. Medicare claims data shows Claudia provided 35,153 services to 888 patients. The services billed most often include injection, fam-trastuzumab deruxtecan-nxki, 1 mg, injection, fosaprepitant, 1 mg, and injection, denosumab, 1 mg. The provider's National Provider Identifier (NPI) is 1114916517.
Factual summary compiled by Guide.md from public records; not written by this provider.
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
980 N MICHIGAN AVENUE SUITE 1086
Chicago, IL 60611
Within Hematology and Oncology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Most searched conditions
Advanced Cancers
Blood & Lymph Disorders
Blood Cancers
Blood Disorders
Blood disorders
Bone & Soft Tissue Cancers
Digestive Cancers
Endocrine Cancers
Endocrine tumors
Gastrointestinal cancer
General oncology
Genetic Blood Disorders
Gynecologic cancer
Gynecologic Cancers
Head & Neck Cancers
Head and neck cancer
Neurologic Cancers
Oncologic emergencies
Ophthalmologic oncology
Skin cancer
Skin Cancers
Urologic Cancers
Most searched procedures
Biopsies & Diagnostics
Blood disorder care
Cancer Therapies
Cancer therapy
Cellular Therapies
Consultations
Diagnostic testing
Hematology Treatments
Imaging
Infusions
Interventional oncology
Supportive Cancer Care
Supportive cancer care
Surgical & Vascular Access
Testing & Genetics
Vascular access care
35,153 services · 888 patients · 19 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
32 | Less often than most peers in Hematology & Oncology |
| Administration of chemotherapy into vein, 1 hour or less | Treatment | 96413 |
152 | As often as other peers in Hematology & Oncology |
| Injection of additional new drug or substance into vein | Treatment | 96375 |
152 | As often as other peers in Hematology & Oncology |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
111 | As often as other peers in Hematology & Oncology |
| Infusion into a vein for therapy, prevention, or diagnosis, additional sequential infusion, 1 hour or less | Treatment | 96367 |
64 | Less often than most peers in Hematology & Oncology |
| Administration of hormonal anti-neoplastic chemotherapy under skin or into muscle | Treatment | 96402 |
46 | Less often than most peers in Hematology & Oncology |
| Administration of additional new drug or substance into vein, 1 hour or less | Treatment | 96417 |
24 | Less often than most peers in Hematology & Oncology |
| Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less | Treatment | 96365 |
23 | Less often than most peers in Hematology & Oncology |
| Injection, fam-trastuzumab deruxtecan-nxki, 1 mg | Drug given | J9358 |
14,400 | Too few peers to compare |
| Injection, fosaprepitant, 1 mg | Drug given | J1453 |
9,000 | As often as other peers in Hematology & Oncology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Dr. Tellez is a cancer specialist in Chicago, IL. That is the designation recorded for this NPI in the federal registry, where it is listed as “Hematology & Oncology”.
NPI registry
Dr. Tellez is listed at 980 N Michigan Avenue Suite 1086, Chicago, IL 60611. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (312) 312-3650. Contact the office directly to confirm availability and scheduling.
NPI registry
Dr. Tellez's National Provider Identifier is 1114916517. 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
Dr. Tellez has 21+ years experience. Registered with an NPI since 2005. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
According to Medicare billing data, Dr. Tellez performs procedures including insertion of needle into vein for collection of blood sample; provides treatments such as administration of chemotherapy into vein, 1 hour or less and injection of additional new drug or substance into vein, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Tellez. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.