Francis Isidoro, M.D.
NPI 1548328933 · Nuclear Imaging & Therapy Physician · Stockton, CA
Enrolled with Medicare as Practitioner - Nuclear Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Francis Isidoro, M.D. is a Nuclear Imaging & Therapy Physician provider in Stockton, CA (NPI 1548328933).
Provider details
- NPI number
- 1548328933
- Entity type
- Individual
- Primary specialty
- Nuclear Imaging & Therapy PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A91432 (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 tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
3,473 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Technetium Tc-99m Sestamibi, Diagnostic, Per Study DoseA9500 | 751 | $45 |
| Nuclear Medicine Studies of Heart Muscle at Rest and With Stress and Spect78452 | 367 | $475 |
| Fluorodeoxyglucose F-18 Fdg, Diagnostic, Per Study Dose, Up to 45 MillicuriesA9552 | 354 | $369 |
| Nuclear Medicine Study From Skull Base to Mid-Thigh With Ct Scan78815 | 339 | $1,697 |
| Exercise Or Drug-Induced Heart Stress Test With Electrocardiogram (ecg)93017 | 257 | $31 |
| Exercise Or Drug-Induced Heart Stress Test With Electrocardiogram (ecg) With Supervision By Physician93016 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-12-05
- Last updated
- 2025-09-11
Frequently asked questions
- What is Francis Isidoro's NPI number?
- Francis Isidoro's National Provider Identifier (NPI) is 1548328933, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Francis Isidoro's specialty?
- Francis Isidoro is listed in the NPPES registry with a primary specialty of Nuclear Imaging & Therapy Physician (Allopathic & Osteopathic Physicians).
- Where is Francis Isidoro located?
- Francis Isidoro's practice location on file with NPPES is 2320 N California St, Stockton, CA 95204-5509.
- What is Francis Isidoro's phone number?
- The practice phone number listed in the NPPES registry for Francis Isidoro is (209) 466-2000.
- Does Francis Isidoro accept Medicare?
- Francis Isidoro is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Francis Isidoro's NPI active?
- Yes — Francis Isidoro's NPI (1548328933) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.