Daniel Simpson, M.D.
NPI 1689974883 · Radiation Oncology Physician · La Jolla, CA
Enrolled with Medicare as Practitioner - Radiation Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Daniel Simpson, M.D. is a Radiation Oncology Physician provider in La Jolla, CA (NPI 1689974883).
Provider details
- NPI number
- 1689974883
- Entity type
- Individual
- Primary specialty
- Radiation Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A118377 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
15 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
661 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) |
|---|---|---|
| Calculation of Radiation Therapy Dose77300 | 161 | $34 |
| Ct Guidance for Insertion of Radiation Therapy Fields77014 | 131 | $47 |
| Design and Construction of Complex Radiation Treatment Device77334 | 112 | $63 |
| Complex Radiation Therapy Planning77263 | 50 | $174 |
| Radiation Treatment Management, 5 Treatment Sessions77427 | 30 | $199 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 29 | $148 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$136 across 1 record (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
- 2010-10-22
- Last updated
- 2015-02-23
Frequently asked questions
- What is Daniel Simpson's NPI number?
- Daniel Simpson's National Provider Identifier (NPI) is 1689974883, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Daniel Simpson's specialty?
- Daniel Simpson is listed in the NPPES registry with a primary specialty of Radiation Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Daniel Simpson located?
- Daniel Simpson's practice location on file with NPPES is 3855 Health Sciences Dr, La Jolla, CA 92093-0865.
- What is Daniel Simpson's phone number?
- The practice phone number listed in the NPPES registry for Daniel Simpson is (858) 822-6040.
- Does Daniel Simpson accept Medicare?
- Daniel Simpson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Daniel Simpson's NPI active?
- Yes — Daniel Simpson's NPI (1689974883) is active in the NPPES registry as of the last update on 2015-02-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.