Physician Profile
Unclaimed ProfileAbout DIFFIE
Based in Saint Louis, MO, Colin E Diffie, MD is listed in the NPI registry under rheumatology. Colin is also listed as specialising in internal medicine.
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
Common questions
What does Dr. Diffie specialise in?
Dr. Diffie is a rheumatology in Saint Louis, MO. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “RHEUMATOLOGY”.
NPI registry
Where is Dr. Diffie located?
Dr. Diffie is listed at 915 N GRAND BLVD, Saint Louis, MO 63106. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Diffie's phone number?
The number on file is (314) 652-4100. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Diffie's NPI number?
Dr. Diffie's National Provider Identifier is 1942616404. 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. Diffie go to medical school?
Dr. Diffie attended Other, graduating in 2014. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Diffie been practising?
Dr. Diffie has 12 years experience. Calculated from a graduation year of 2014, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Diffie do most often?
According to Medicare billing data, Dr. Diffie performs procedures including aspiration and/or injection of fluid from large joint and aspiration and/or injection of fluid large joint using ultrasound guidance; reads or performs imaging such as complete ultrasound scan of joint; provides treatments such as infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less and injection of drug or substance under skin or into muscle, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Diffie confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Diffie. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (314) 652-4100
- Email not available
Practice Locations
915 N GRAND BLVD
Saint Louis, MO 63106
Procedures Most Often Billed to Medicare
4,013 services · 521 patients · 15 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Aspiration and/or injection of fluid from large joint | Procedure | 20610 |
23 |
| Aspiration and/or injection of fluid large joint using ultrasound guidance | Procedure | 20611 |
16 |
| Complete ultrasound scan of joint | Imaging | 76881 |
12 |
| Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less | Treatment | 96365 |
66 |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
48 |
| Infusion into a vein for therapy, prevention, or diagnosis, each additional hour | Treatment | 96366 |
23 |
| Injection, methylprednisolone acetate, 1 mg | Drug given | J1010 |
1,800 |
| Injection, denosumab, 1 mg | Drug given | J0897 |
1,500 |
| Injection, triamcinolone acetonide, not otherwise specified, 10 mg | Drug given | J3301 |
104 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
274 |
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.
Related specialists at this location 2
Clinically related specialties at the same address — the people this provider most likely works alongside.
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 rheumatology specialists in Saint Louis 8
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2014 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Aspiration and/or injection of fluid from large joint 8
Providers in MO who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.