Michael Krzyzaniak, M.D.
NPI 1164626594 · Trauma Surgery Physician · San Diego, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Krzyzaniak, M.D. is a Trauma Surgery Physician provider in San Diego, CA (NPI 1164626594).
Provider details
- NPI number
- 1164626594
- Entity type
- Individual
- Primary specialty
- Trauma Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 50424 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
178 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 68 | $80 |
| Critical Care, First 30-74 Minutes99291 | 35 | $213 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 25 | $118 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 19 | $176 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 16 | $50 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 15 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-06-11
- Last updated
- 2024-04-08
- Certified
- 2024-04-08
Frequently asked questions
- What is Michael Krzyzaniak's NPI number?
- Michael Krzyzaniak's National Provider Identifier (NPI) is 1164626594, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Krzyzaniak's specialty?
- Michael Krzyzaniak is listed in the NPPES registry with a primary specialty of Trauma Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Krzyzaniak located?
- Michael Krzyzaniak's practice location on file with NPPES is 550 Washington St Ste 641, San Diego, CA 92103-2229.
- What is Michael Krzyzaniak's phone number?
- The practice phone number listed in the NPPES registry for Michael Krzyzaniak is (619) 299-3100.
- Does Michael Krzyzaniak accept Medicare?
- Michael Krzyzaniak is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Krzyzaniak's NPI active?
- Yes — Michael Krzyzaniak's NPI (1164626594) is active in the NPPES registry as of the last update on 2024-04-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.