Charles Munn, MD
NPI 1700983467 · Diagnostic Radiology Physician · Castro Valley, CA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charles Munn, MD is a Diagnostic Radiology Physician provider in Castro Valley, CA (NPI 1700983467).
Provider details
- NPI number
- 1700983467
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G47197 (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
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
685 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) |
|---|---|---|
| X-Ray of Chest, 1 View71045 | 151 | $9 |
| X-Ray of Chest, 2 Views71046 | 67 | $11 |
| Limited Ultrasound Scan of Abdomen76705 | 65 | $29 |
| Ultrasound Scan of Head and Neck Soft Tissue76536 | 61 | $28 |
| Complete Ultrasound Scan Behind Abdominal Cavity76770 | 56 | $36 |
| Complete Ultrasound Scan of Abdomen76700 | 32 | $40 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-17
- Last updated
- 2025-05-06
- Certified
- 2025-05-06
Frequently asked questions
- What is Charles Munn's NPI number?
- Charles Munn's National Provider Identifier (NPI) is 1700983467, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Munn's specialty?
- Charles Munn is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Charles Munn located?
- Charles Munn's practice location on file with NPPES is 20642 John Dr, Castro Valley, CA 94546-5103.
- What is Charles Munn's phone number?
- The practice phone number listed in the NPPES registry for Charles Munn is (510) 581-2559.
- Does Charles Munn accept Medicare?
- Charles Munn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charles Munn's NPI active?
- Yes — Charles Munn's NPI (1700983467) is active in the NPPES registry as of the last update on 2025-05-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.