Physician Profile
Unclaimed ProfileAbout BAYS
Derek John Bays, MD is a healthcare provider in Sacramento, CA specializing in infectious disease. Derek trained at University of California, Davis School of Medicine, graduating in 2015. Derek is also listed as specializing in internal medicine. Medicare claims data shows Derek provided 318 services to 209 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
- (916) 816-0421
- Email not available
Practice Locations
4610 X ST
Sacramento, CA 95817
Procedures Most Often Billed to Medicare
318 services · 209 patients · 7 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
80 |
| Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient' | Billing code | G2211 |
78 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
65 |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | Office visit | 99222 |
31 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
28 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
20 |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Office visit | 99223 |
16 |
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 Sacramento 8
Same specialty, same city.
Trained at University of California, Davis School of Medicine 8
Other providers in the same specialty who trained at the same institution.
More connections — 8 related providers in 1 group
Class of 2015 at University of California, Davis School of Medicine 8
Providers who graduated from the same medical school in the same year.
Common questions
What is Dr. Bays's specialty?
Dr. Bays is an infectious disease in Sacramento, 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. Bays?
Dr. Bays is listed at 4610 X ST, Sacramento, CA 95817. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Bays?
The number on file is (916) 816-0421. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Bays?
Dr. Bays's National Provider Identifier is 1932541257. 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. Bays's medical education?
Dr. Bays attended University of California, Davis School of Medicine, graduating in 2015. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Bays have?
Dr. Bays has 11 years experience. Calculated from a graduation year of 2015, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Bays known for?
According to Medicare billing data, Dr. Bays 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. Bays's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Bays. 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.