Physician Profile
Unclaimed ProfileAbout BAKER
Based in San Luis Obispo, CA, Aaron Gordon Baker, M.D. is listed in the NPI registry under emergency medicine. Aaron graduated from University of California, San Francisco School of Medicine in 1989. According to Medicare claims data, Aaron cared for 228 Medicare patients across 237 services.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (805) 756-1211
- Email not available
Practice Locations
1 GRAND AVE CAMPUS HEALTH AND WELL BEING BLDG 27
San Luis Obispo, CA 93407
Procedures Most Often Billed to Medicare
237 services · 228 patients · 10 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| X-ray of chest, 2 views | Imaging | 71046 |
24 |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
14 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
42 |
| Urinalysis, manual test | Lab test | 81002 |
31 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
30 |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
28 |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
21 |
| Detection test by immunoassay with direct visual observation for streptococcus, group a (strep) | Lab test | 87880 |
20 |
| Detection test by immunoassay with direct visual observation for severe acute respiratory syndrome coronavirus 2 (covid-19) | Lab test | 87811 |
16 |
| Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen | Lab test | 87635 |
11 |
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 medicines at this location 1
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 medicines in San Luis Obispo 7
Same specialty, same city.
More connections — 23 related providers in 3 groups
Trained at University of California, San Francisco School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1989 at University of California, San Francisco School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs X-ray of chest, 2 views 7
Providers in CA who bill this service to Medicare most often.
Common questions
What kind of doctor is Dr. Baker?
Dr. Baker is an emergency medicine in San Luis Obispo, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “EMERGENCY MEDICINE”.
NPI registry
What is Dr. Baker's address?
Dr. Baker is listed at 1 GRAND AVE CAMPUS HEALTH AND WELL BEING BLDG 27, San Luis Obispo, CA 93407. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Baker?
The number on file is (805) 756-1211. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Baker's NPI number?
Dr. Baker's National Provider Identifier is 1215968060. 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
Where did Dr. Baker train?
Dr. Baker attended University of California, San Francisco School of Medicine, graduating in 1989. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Baker been practicing?
Dr. Baker has 37 years experience. Calculated from a graduation year of 1989, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Baker perform?
According to Medicare billing data, Dr. Baker performs imaging including x-ray of chest, 2 views; provides treatments such as routine electrocardiogram using at least 12 leads with interpretation and report, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Baker confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Baker. 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.