Physician Profile
Unclaimed ProfileAbout LUDWIG
Based in San Diego, CA, Jon Keith Ludwig, M.D. is listed in the NPI registry under emergency medicine. Medicare claims data shows Jon provided 720 services to 673 patients.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (619) 260-7095
- Email not available
Practice Locations
4077 FIFTH AVE
San Diego, CA 92103
Procedures Most Often Billed to Medicare
720 services · 673 patients · 7 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | Treatment | 93010 |
163 |
| Electrocardiogram (ecg) 1 to 3 leads with review by physician only | Treatment | 93042 |
45 |
| Emergency department visit with high level of medical decision making | Office visit | 99285 |
249 |
| Emergency department visit with moderate level of medical decision making | Office visit | 99284 |
144 |
| Emergency department visit with low level of medical decision making | Office visit | 99283 |
53 |
| Critical care, first 30-74 minutes | Office visit | 99291 |
52 |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Office visit | 99223 |
14 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other emergency physicians at this location 4
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other emergency physicians in San Diego 8
Same specialty, same city.
More connections — 8 related providers in 1 group
Also performs Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 8
Providers in CA who bill this service to Medicare most often.
Common questions
What does Dr. Ludwig specialize in?
Dr. Ludwig is an emergency physician in San Diego, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “Emergency Medicine”.
NPI registry
Where is Dr. Ludwig located?
Dr. Ludwig is listed at 4077 FIFTH AVE, San Diego, CA 92103. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Ludwig's phone number?
The number on file is (619) 260-7095. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Ludwig?
Dr. Ludwig's National Provider Identifier is 1669403911. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
How much experience does Dr. Ludwig have?
Dr. Ludwig has 20+ years experience. Registered with an NPI since 2006. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
What does Dr. Ludwig do most often?
According to Medicare billing data, Dr. Ludwig provides treatments such as routine electrocardiogram using at least 12 leads with interpretation and report only and electrocardiogram 1 to 3 leads with review by physician only, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Ludwig's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Ludwig. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.