Harold Bays, MD
NPI 1316953920 · Endocrinology, Diabetes & Metabolism Physician · Louisville, KY
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Harold Bays, MD is a Endocrinology, Diabetes & Metabolism Physician provider in Louisville, KY (NPI 1316953920).
Provider details
- NPI number
- 1316953920
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 24037 (KY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$53,008 across 49 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-01
- Last updated
- 2021-09-18
- Certified
- 2021-09-18
Frequently asked questions
- What is Harold Bays's NPI number?
- Harold Bays's National Provider Identifier (NPI) is 1316953920, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Harold Bays's specialty?
- Harold Bays is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Harold Bays located?
- Harold Bays's practice location on file with NPPES is 3288 Illinois Ave, Louisville, KY 40213-1014.
- What is Harold Bays's phone number?
- The practice phone number listed in the NPPES registry for Harold Bays is (502) 515-6621.
- Does Harold Bays accept Medicare?
- Harold Bays is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Harold Bays's NPI active?
- Yes — Harold Bays's NPI (1316953920) is active in the NPPES registry as of the last update on 2021-09-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.