Charles Blumberg, MD
NPI 1225532310 · Internal Medicine Physician · Laguna Hills, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charles Blumberg, MD is a Internal Medicine Physician provider in Laguna Hills, CA (NPI 1225532310).
Provider details
- NPI number
- 1225532310
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A164221 (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
8 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
1,504 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) |
|---|---|---|
| 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 | 614 | $18 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 334 | $111 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 290 | $156 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 79 | $190 |
| Administration of Influenza Virus VaccineG0008 | 52 | $35 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 68 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 169 | 64 |
| Amlodipine Besylate | 167 | 70 |
| Rosuvastatin Calcium | 146 | 56 |
| Levothyroxine Sodium | 122 | 38 |
| Losartan Potassium | 113 | 40 |
| Trazodone Hcl | 81 | 35 |
| Omeprazole |
Practice location
Mailing address
Registry dates
- Enumerated
- 2018-03-22
- Last updated
- 2022-11-01
- Certified
- 2022-11-01
Frequently asked questions
- What is Charles Blumberg's NPI number?
- Charles Blumberg's National Provider Identifier (NPI) is 1225532310, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Blumberg's specialty?
- Charles Blumberg is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Charles Blumberg located?
- Charles Blumberg's practice location on file with NPPES is 23961 Calle De La Magdalena Ste 200, Laguna Hills, CA 92653-3645.
- What is Charles Blumberg's phone number?
- The practice phone number listed in the NPPES registry for Charles Blumberg is (949) 238-4100.
- Does Charles Blumberg accept Medicare?
- Charles Blumberg is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charles Blumberg's NPI active?
- Yes — Charles Blumberg's NPI (1225532310) is active in the NPPES registry as of the last update on 2022-11-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.