Charles Redfern, M.D.
NPI 1225007396 · Hematology & Oncology Physician · San Diego, CA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charles Redfern, M.D. is a Hematology & Oncology Physician provider in San Diego, CA (NPI 1225007396).
Provider details
- NPI number
- 1225007396
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A52733 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 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
812 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 434 | $137 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 116 | $9 |
| Administration of Chemotherapy Into Vein, 1 Hour Or Less96413 | 76 | $148 |
| Administration of Hormonal Anti-Neoplastic Chemotherapy Under Skin Or Into Muscle96402 | 43 | $40 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 43 | $233 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Gabapentin | 41 | — |
| Abiraterone Acetate | 39 | — |
| Prednisone | 28 | 12 |
| Ondansetron Hcl | 24 | 15 |
| Dexamethasone | 21 | — |
| Bicalutamide | 20 | — |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 20 | 11 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-03-14
- Last updated
- 2012-07-26
Frequently asked questions
- What is Charles Redfern's NPI number?
- Charles Redfern's National Provider Identifier (NPI) is 1225007396, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Redfern's specialty?
- Charles Redfern is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Charles Redfern located?
- Charles Redfern's practice location on file with NPPES is 3075 Health Center Dr, San Diego, CA 92123-2773.
- What is Charles Redfern's phone number?
- The practice phone number listed in the NPPES registry for Charles Redfern is (858) 637-7888.
- Does Charles Redfern accept Medicare?
- Charles Redfern is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charles Redfern's NPI active?
- Yes — Charles Redfern's NPI (1225007396) is active in the NPPES registry as of the last update on 2012-07-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.