Derek Bays, MD
NPI 1932541257 · Internal Medicine Physician · Sacramento, CA
Enrolled with Medicare as Practitioner - Infectious Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Derek Bays, MD is a Internal Medicine Physician provider in Sacramento, CA (NPI 1932541257).
Provider details
- NPI number
- 1932541257
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A149095 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
12 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
318 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 80 | $99 |
| 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'SG2211 | 78 | $17 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 65 | $80 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 31 | $132 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 28 | $120 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Bictegrav/Emtricit/Tenofov Alabrand: Biktarvy | 35 |
| Abacavir/Dolutegravir/Lamivudibrand: Triumeq | 29 |
| Dolutegravir/Rilpivirinebrand: Juluca | 26 |
| Dolutegravir Sodiumbrand: Tivicay | 25 |
| Doxycycline Hyclate | 20 |
| Estradiol | 16 |
| Cephalexin | 15 |
| Darunavir/Cobicistatbrand: Prezcobix | 13 |
| Fostemsavir Tromethaminebrand: Rukobia | 13 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-07-29
- Last updated
- 2019-04-17
Frequently asked questions
- What is Derek Bays's NPI number?
- Derek Bays's National Provider Identifier (NPI) is 1932541257, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Derek Bays's specialty?
- Derek Bays is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Derek Bays located?
- Derek Bays's practice location on file with NPPES is 4610 X St, Sacramento, CA 95817-2200.
- What is Derek Bays's phone number?
- The practice phone number listed in the NPPES registry for Derek Bays is (916) 816-0421.
- Does Derek Bays accept Medicare?
- Derek Bays is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Derek Bays's NPI active?
- Yes — Derek Bays's NPI (1932541257) is active in the NPPES registry as of the last update on 2019-04-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.