Jonathan Riess, M.D., M.S.
NPI 1619132461 · Hematology & Oncology Physician · Sacramento, CA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jonathan Riess, M.D., M.S. is a Hematology & Oncology Physician provider in Sacramento, CA (NPI 1619132461).
Provider details
- NPI number
- 1619132461
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., M.S.
- Sex
- Male
- Sole proprietor
- No
- License
- A103441 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
17 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
617 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 233 | $17 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 218 | $98 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 51 | $146 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 43 | $67 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 27 | $79 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Osimertinib Mesylatebrand: Tagrisso | 105 | 14 |
| Alectinib Hclbrand: Alecensa | 53 | — |
| Dexamethasone | 47 | 25 |
| Prochlorperazine Maleate | 42 | 24 |
| Ondansetron Hcl | 35 | 20 |
| Erlotinib Hcl | 30 | — |
| Selpercatinibbrand: Retevmo | 27 | — |
| Olanzapine |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$19,202 across 28 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-07-22
- Last updated
- 2019-09-05
Frequently asked questions
- What is Jonathan Riess's NPI number?
- Jonathan Riess's National Provider Identifier (NPI) is 1619132461, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jonathan Riess's specialty?
- Jonathan Riess is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Jonathan Riess located?
- Jonathan Riess's practice location on file with NPPES is 2279 45th Street, Sacramento, CA 95817-2229.
- What is Jonathan Riess's phone number?
- The practice phone number listed in the NPPES registry for Jonathan Riess is (916) 734-5959.
- Does Jonathan Riess accept Medicare?
- Jonathan Riess is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jonathan Riess's NPI active?
- Yes — Jonathan Riess's NPI (1619132461) is active in the NPPES registry as of the last update on 2019-09-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.