Physician Profile
Unclaimed ProfileAbout CANFIELD
Based in San Luis Obispo, CA, Gregory Scott Canfield, M.D., PhD is listed in the NPI registry under infectious disease. Gregory is also listed as specializing in critical care medicine and internal medicine. Medicare claims data shows Gregory provided 464 services to 297 patients.
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) 543-4407
- Email not available
Practice Locations
1428 PHILLIPS LN STE 203
San Luis Obispo, CA 93401
Procedures Most Often Billed to Medicare
464 services · 297 patients · 6 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Insertion of non-tunneled central venous tube for infusion (5 years or older) | Procedure | 36556 |
17 |
| Insertion of artery tube for blood sampling or infusion through skin | Procedure | 36620 |
16 |
| Ultrasonic guidance for blood vessel access | Imaging | 76937 |
37 |
| Critical care, first 30-74 minutes | Office visit | 99291 |
276 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
70 |
| Critical care, each additional 30 minutes | Office visit | 99292 |
48 |
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.
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 infectious diseases in San Luis Obispo 3
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 2014 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Insertion of non-tunneled central venous tube for infusion (5 years or older) 8
Providers in CA who bill this service to Medicare most often.
Common questions
What is Dr. Canfield's specialty?
Dr. Canfield is an infectious disease in San Luis Obispo, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “INFECTIOUS DISEASE”.
NPI registry
Where can I find Dr. Canfield?
Dr. Canfield is listed at 1428 PHILLIPS LN STE 203, San Luis Obispo, CA 93401. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Canfield?
The number on file is (805) 543-4407. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Canfield?
Dr. Canfield's National Provider Identifier is 1144632159. 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
What is Dr. Canfield's medical education?
Dr. Canfield attended Other, graduating in 2014. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Canfield have?
Dr. Canfield has 12 years experience. Calculated from a graduation year of 2014, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Canfield known for?
According to Medicare billing data, Dr. Canfield performs procedures including insertion of non-tunneled central venous tube for infusion and insertion of artery tube for blood sampling or infusion through skin; reads or performs imaging such as ultrasonic guidance for blood vessel access, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Canfield's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Canfield. 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.