Elisabeth Lucas Day, MD
Obstetrics & Gynecology Physician · Watsonville, CA
Elisabeth Lucas Day, MD is an obstetrics & gynecology physician with a practice address in Watsonville, California, and NPI 1811494495, issued on Apr 10, 2018. Check the license (California A165696, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Elisabeth Lucas Day
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- A165696 CA
Self-reported in NPPES; status is on the state search - Practice location
- 204 E Beach St, Watsonville, CA 95076
- Phone
- (831) 728-0222
- Enumerated
- Apr 10, 2018
- Record last updated
- Dec 5, 2025
- Fax
- (831) 707-2777
- Medicare enrollment
- Enrolled (PECOS I20220805001209); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 204 E Beach St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Elisabeth Lucas Day in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A165696Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
58% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
70 Medicare Part D claims for 28 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Most prescribed
- Estradiol39 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through 2 group practices
- Dignity Health Medical FoundationSanta Cruz, CA
- Sutter Bay Medical FoundationSanta Cruz, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Elisabeth Lucas Day among 5,088 obstetrics & gynecology physician records in California
Elisabeth Lucas Day, MD is one of 5,088 obstetrics & gynecology physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 90% of them.
- NPI issued2018 · 90% of these records are older, 8% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2018 · median 2004 among the 2,700 with a school on file
- Record last updated2025 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in California
There are 5,088 obstetrics & gynecology physician records in California.
All 5,088 in California → Every provider in Watsonville → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Katherine Gabriel-Cox, MDWatsonville, CA 950761922159474
- Cristina Gamboa, M.D.Watsonville, CA 950761295012235
- Cheryl Northey, M.D.Watsonville, CA 950761760513253
- Abraham Sklar, M.D.Watsonville, CA 950761053424127
- Neelima Vegesna, M.D.Watsonville, CA 950761770795759
- Heajin Kamalani, MDSoquel, CA 950731932260619
- Melissa Adrouny, M.D.Santa Cruz, CA 950651407112188
- Hsuan-Chih Chen, MDSanta Cruz, CA 950651114286796
Common questions
What is Elisabeth Lucas Day, MD's NPI number?
Elisabeth Lucas Day, MD's National Provider Identifier (NPI) is 1811494495, issued on Apr 10, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Elisabeth Lucas Day, MD located?
The NPPES record lists a practice address at 204 E Beach St, Watsonville, CA, 95076. Phone: (831) 728-0222. Providers update this record themselves, so call before visiting.
How can I verify Elisabeth Lucas Day, MD's license?
NPPES lists California license number A165696, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Elisabeth Lucas Day, MD prescribe under Medicare Part D?
In 2024, Elisabeth Lucas Day, MD had 70 Medicare Part D claims for 28 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.