Richard G. Day, MD
Family Medicine Physician · Nipomo, CA
Richard G. Day, MD is a family medicine physician with a practice address in Nipomo, California, and NPI 1861619355, issued on Apr 19, 2007. Check the license (California G55683, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Richard G. Day
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- G55683 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1560 Mesa RD Ste 100, Nipomo, CA 93444
- Phone
- (805) 614-5640
- Enumerated
- Apr 19, 2007
- Record last updated
- Nov 2, 2023
- Fax
- (805) 614-5641
- Medicare enrollment
- Enrolled (PECOS I20130515000055); accepts Medicare assignment
- Medical or professional school
- Clvlnd Clinic Lerner College Of Med Of Case Wstn Rsv University, 1980
- Entity
- Type 1 · individual
Also registered at 1560 Mesa RD Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mary Cryer, APRNFamily Nurse Practitioner1912366790
- Nancy Kitson, MDInternal Medicine Physician1174543664
- Summer SheffieldFamily Nurse Practitioner1700460375
- Ashley Wells, FNPFamily Nurse Practitioner1376327015
Verify Richard G. Day in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G55683Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.5 times the Medicare Part D claims of the average family medicine physician in 2024
8,730 Medicare Part D claims for 741 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 28 claims were for opioids.
Most prescribed
- Atorvastatin Calcium595 claims
- Losartan Potassium424 claims
- Levothyroxine Sodium419 claims
- Amlodipine Besylate321 claims
- Metoprolol Succinate312 claims
- Lisinopril261 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.
The MIPS final score for 2023 (Medicare payment program): 96.5 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Pacific Central Coast Health CentersLos Osos, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
13 family medicine physician records list a practice address in Nipomo
They are 13 of the 156 NPPES records with a practice address in Nipomo, and 17,133 family medicine physician records in California.
All 13 in Nipomo → All 17,133 in California → Every provider in Nipomo →
Other family medicine physician records in California
- Omer Aba-Omer, MDSanta Monica, CA1649702093
- Michelle Ababa, MDWilmington, CA1710922513
- Anna Tzeitel Abalos, MDRoseville, CA1720200017
- Adan Abarca, MDAnaheim, CA1760553689
- Vanessa Abarca, DOVentura, CA1952040859
- Lorraine Abate, M.D.Sacramento, CA1104840008
- Robert Abatecola, MDCastro Valley, CA1669551719
- Romeo Abaya, M.D.Cottonwood, CA1598053506
- Effiem Abbah, MD, MPHSan Francisco, CA1821185133
- Khuzeman Abbasi, MDSanta Rosa, CA1841979952
Common questions
What is Richard G. Day, MD's NPI number?
Richard G. Day, MD's National Provider Identifier (NPI) is 1861619355, issued on Apr 19, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Richard G. Day, MD located?
The NPPES record lists a practice address at 1560 Mesa RD Ste 100, Nipomo, CA, 93444. Phone: (805) 614-5640. Providers update this record themselves, so call before visiting.
How can I verify Richard G. Day, MD's license?
NPPES lists California license number G55683, 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 Richard G. Day, MD prescribe under Medicare Part D?
In 2024, Richard G. Day, MD had 8,730 Medicare Part D claims for 741 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Richard G. Day, MD's MIPS final score?
The 2023 MIPS final score is 96.5 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.