Karl Grunseich, M.D.
NPI 1386006021 · Diagnostic Radiology Physician · San Diego, CA
Enrolled with Medicare as Practitioner - Interventional Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karl Grunseich, M.D. is a Diagnostic Radiology Physician provider in San Diego, CA (NPI 1386006021).
Provider details
- NPI number
- 1386006021
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
10 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
14 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) |
|---|---|---|
| Ct Scan of Abdomen and Pelvis With Contrast74177 | 14 | $88 |
Typical Medicare-allowed amounts for these services range $88–$88 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (2)
- 4077 Fifth Ave # Mer35San Diego, CA 92103-2105Phone: (619) 260-7220
- 513 Parnassus AveSan Francisco, CA 94143-2205Phone: (415) 476-8358
Registry dates
- Enumerated
- 2016-03-22
- Last updated
- 2024-01-16
- Certified
- 2024-01-16
Frequently asked questions
- What is Karl Grunseich's NPI number?
- Karl Grunseich's National Provider Identifier (NPI) is 1386006021, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karl Grunseich's specialty?
- Karl Grunseich is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Karl Grunseich located?
- Karl Grunseich's practice location on file with NPPES is 4647 Zion Ave, San Diego, CA 92120-2507.
- What is Karl Grunseich's phone number?
- The practice phone number listed in the NPPES registry for Karl Grunseich is (619) 346-8626.
- Does Karl Grunseich accept Medicare?
- Karl Grunseich is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karl Grunseich's NPI active?
- Yes — Karl Grunseich's NPI (1386006021) is active in the NPPES registry as of the last update on 2024-01-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.