Pharmacy Service Providers / 1835X0200X
Individual · specialization
1835X0200X Oncology Pharmacist
1835X0200X is the taxonomy code for Oncology, a specialization of Pharmacist, in the NUCC group “Pharmacy Service Providers”. It is a code for individual providers — the kind used on a Type 1 NPI. It has no entry in the CMS Medicare taxonomy crosswalk.
- 1Taxonomy code 1835X0200X
- 2Level Specialization
- 3Medicare specialty Not in the crosswalk
- 4Codes in this group 19
Definition
A licensed pharmacist who has demonstrated specialized knowledge and skill in developing, recommending, implementing, monitoring, and modifying pharmacotherapeutic plans to optimize outcomes in patients with malignant diseases.
— NUCC Health Care Provider Taxonomy, version 26.1
Where 1835X0200X sits
- Group: Pharmacy Service Providers — code 12 of 19 in the group
- Classification: Pharmacist 183500000X
- Specialization: Oncology 1835X0200X
Choose 1835X0200X over the general Pharmacist code (183500000X) when the provider's training or certification is specifically in oncology; the general code covers the classification as a whole. A provider may report more than one taxonomy code on an NPI but marks one as primary.
Medicare
1835X0200X has no entry in the CMS Medicare Provider and Supplier Taxonomy Crosswalk. That usually means Medicare does not enroll this kind of provider under its own specialty — the provider can still hold an NPI and use this code on claims to other payers.
Related codes
| Code | Pharmacist — other specializations |
|---|---|
| 1835I0206X | Infectious Diseases |
| 1835N0905X | Nuclear |
| 1835N1003X | Nutrition Support |
| 1835P1400X | Pain Management |
| 1835P0200X | Pediatrics |
| 1835P0018X | Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist |
The nearest 6 of 17 other codes under Pharmacist; all are on the group page.
History of 1835X0200X
1835X0200X was added to the code set in 2006.
- 2006-07-01 — new
Similar codes in other groups
If 1835X0200X is not quite right, these codes in other groups share a word with it — often the same field practised by a different kind of provider:
- 207RH0003X Hematology & Oncology Physician (Allopathic & Osteopathic Physicians)
- 207RX0202X Medical Oncology Physician (Allopathic & Osteopathic Physicians)
- 207VX0201X Gynecologic Oncology Physician (Allopathic & Osteopathic Physicians)
- 2080P0207X Pediatric Hematology & Oncology Physician (Allopathic & Osteopathic Physicians)
- 2085R0001X Radiation Oncology Physician (Allopathic & Osteopathic Physicians)
- 2086X0206X Surgical Oncology Physician (Allopathic & Osteopathic Physicians)
Find providers with 1835X0200X
Using 1835X0200X
The code goes in the taxonomy field of the NPI application in NPPES, and on claims where a payer asks for it — box 24J (shaded) or 33b on the CMS-1500 with the ZZ qualifier, or the PRV segment of an 837 electronic claim. Payers match it against the taxonomy on the NPI record and, for Medicare, against the specialty on the enrollment, so all three should agree. To see which code a provider uses, search their NPI in the lookup.
Sources: NUCC Health Care Provider Taxonomy code set, version 26.1 (CSV). Checked 2026-10-24. Methodology.