Paul Day
Dentist · Rancho Santa Margarita, CA
Paul Day is a dentist with a practice address in Rancho Santa Margarita, California, and NPI 1811393887, issued on Nov 18, 2014. Check the license (California 37648, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Paul Day
- Primary taxonomy
- Dentist 122300000X
- License number
- 37648 CA
Self-reported in NPPES; status is on the state search - Practice location
- 31441 Santa Margarita Pkwy, Rancho Santa Margarita, CA 92688
- Phone
- (949) 589-8352
- Enumerated
- Nov 18, 2014
- Record last updated
- Nov 18, 2014 (not updated in 12 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest dentist records → All 14,729 in California → Look up another NPI →
Also registered at 31441 Santa Margarita Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Paul Day in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 37648Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
77% fewer Medicare Part D claims than the average dentist in 2024
20 Medicare Part D claims for 16 beneficiaries, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Amoxicillin15 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.
Paul Day among 14,729 dentist records in California
Paul Day is one of 14,729 dentist records with a practice address in California. 56% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 63% of them.
- NPI issued2014 · 63% of these records are older, 33% newer
- In a Medicare fileYes · 56% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2014 · 73% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 122300000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
11 dentist records list a practice address in Rancho Santa Margarita
They are 11 of the 479 NPPES records with a practice address in Rancho Santa Margarita, and 14,729 dentist records in California.
All 14,729 in California → Every provider in Rancho Santa Margarita → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
- Marjan Arman, DDSRancho Santa Margarita, CA 926881801455340
- Rinesh Ganatra, DDSRancho Santa Margarita, CA 926881013085802
- Paul Hoppe, DDSRancho Santa Margarita, CA 926881558385575
- Morvarid Madani, D.M.D.Rancho Santa Margarita, CA 926881255608543
- Katayoun Massoudi, DDSRancho Santa Margarita, CA 926881831280288
- Trina Melancon, D.M.D.Rancho Santa Margarita, CA 926881497194005
- Alexander Nguyen, DMDRancho Santa Margarita, CA 926881184347643
- Azin Sharif, DDSRancho Santa Margarita, CA 926881023769908
Common questions
What is Paul Day's NPI number?
Paul Day's National Provider Identifier (NPI) is 1811393887, issued on Nov 18, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Paul Day located?
The NPPES record lists a practice address at 31441 Santa Margarita Pkwy, Rancho Santa Margarita, CA, 92688. Phone: (949) 589-8352. Providers update this record themselves, so call before visiting.
How can I verify Paul Day's license?
NPPES lists California license number 37648, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Paul Day prescribe under Medicare Part D?
In 2024, Paul Day had 20 Medicare Part D claims for 16 beneficiaries; the average among dentist prescribers was 86. 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.