Darlene L. Espinosa, MD
Family Medicine Physician · Upland, CA
Darlene L. Espinosa, MD is a family medicine physician with a practice address in Upland, California, and NPI 1619105541, issued on Jun 30, 2009. Check the license (California A120539, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Darlene L. Espinosa
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A120539 CA
Self-reported in NPPES; status is on the state search - Practice location
- 440 N Mountain Ave Ste 110, Upland, CA 91786
- Phone
- (909) 870-5200
- Enumerated
- Jun 30, 2009
- Record last updated
- Jun 1, 2022
- Medicare enrollment
- Enrolled (PECOS I20130410000584); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 440 N Mountain Ave Ste 110
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Christina MurilloPhysician Assistant1710714779
- Mike Zuniga, MDFamily Medicine Physician1578791588
Verify Darlene L. Espinosa in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A120539Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
73% more Medicare Part D claims than the average family medicine physician in 2024
6,121 Medicare Part D claims for 642 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 244 claims were for opioids.
Most prescribed
- Atorvastatin Calcium338 claims
- Levothyroxine Sodium268 claims
- Losartan Potassium218 claims
- Amlodipine Besylate196 claims
- Lisinopril188 claims
- Gabapentin166 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 one group practice
- MD Zuniga Inc.Upland, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Darlene L. Espinosa among 17,133 family medicine physician records in California
Darlene L. Espinosa, MD is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 58% of them.
- NPI issued2009 · 58% of these records are older, 40% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2006 · median 2005 among the 10,652 with a school on file
- Record last updated2022 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
38 family medicine physician records list a practice address in Upland
They are 38 of the 1,846 NPPES records with a practice address in Upland, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Upland → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Richard Armour, D.OUpland, CA 917861366488215
- Louis Brenner, M.D.Upland, CA 917861003852815
- Bryan Chan, MDUpland, CA 917861417059957
- Louis Dibernardo, MDUpland, CA 917861528045358
- Warren Regh Gabrillo, M.D.Upland, CA 917861982689295
- Dwight Guan, MDUpland, CA 917861184644676
- Rick Hirsch, D.O.Upland, CA 917861497774954
- James Ho, MDUpland, CA 917861669440988
Common questions
What is Darlene L. Espinosa, MD's NPI number?
Darlene L. Espinosa, MD's National Provider Identifier (NPI) is 1619105541, issued on Jun 30, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Darlene L. Espinosa, MD located?
The NPPES record lists a practice address at 440 N Mountain Ave Ste 110, Upland, CA, 91786. Phone: (909) 870-5200. Providers update this record themselves, so call before visiting.
How can I verify Darlene L. Espinosa, MD's license?
NPPES lists California license number A120539, 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 Darlene L. Espinosa, MD prescribe under Medicare Part D?
In 2024, Darlene L. Espinosa, MD had 6,121 Medicare Part D claims for 642 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.