Physician Profile
Unclaimed ProfileAbout CALLISTER
Devin T Callister, M.D. practises infectious disease in Walnut Creek, CA. Devin is also listed as specialising in student in an organized health care education program.
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. Callister specialise in?
Dr. Callister is an infectious disease in Walnut Creek, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “INFECTIOUS DISEASE”.
NPI registry
Where is Dr. Callister located?
Dr. Callister is listed at 365 LENNON LN SUITE 200, Walnut Creek, CA 94598. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Callister's phone number?
The number on file is (925) 947-2334. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Callister?
Dr. Callister's National Provider Identifier is 1376856757. 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. Callister go to medical school?
Dr. Callister attended Other, graduating in 2010. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Callister have?
Dr. Callister has 16 years experience. Calculated from a graduation year of 2010, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Callister do most often?
According to Medicare billing data, Dr. Callister the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Callister's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Callister. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (925) 947-2334
- Email not available
Practice Locations
365 LENNON LN SUITE 200
Walnut Creek, CA 94598
Procedures Most Often Billed to Medicare
434 services · 219 patients · 4 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Follow-up inpatient consultation, complex, physicians typically spend 35 minutes communicating with the patient via telehealth | Billing code | G0408 |
271 |
| Telehealth consultation, emergency department or initial inpatient, typically 70 minutes or more communicating with the patient via telehealth | Billing code | G0427 |
108 |
| Follow-up inpatient consultation, intermediate, physicians typically spend 25 minutes communicating with the patient via telehealth | Billing code | G0407 |
37 |
| Telehealth consultation, emergency department or initial inpatient, typically 50 minutes communicating with the patient via telehealth | Billing code | G0426 |
18 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
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Claim this profileRelated providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other infectious diseases at this location 8
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 infectious diseases in Walnut Creek 2
Same specialty, same city.
More connections — 16 related providers in 2 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2010 at Other 8
Providers who graduated from the same medical school in the same year.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.