Ricardo Guerra, M.D.
Dermatology Physician · Walnut Creek, CA
Ricardo Guerra, M.D. is a dermatology physician with a practice address in Walnut Creek, California, and NPI 1558867036, issued on Apr 3, 2018. Check the license (California A188585, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ricardo Guerra
- Credential
- M.D.
- Primary taxonomy
- Dermatology Physician 207N00000X
- License number
- A188585 CA
Self-reported in NPPES; status is on the state search - Practice location
- 320 Lennon LN, Walnut Creek, CA 94598
- Phone
- (925) 817-5678
- Enumerated
- Apr 3, 2018
- Record last updated
- Sep 20, 2023
- Medicare enrollment
- Enrolled (PECOS I20240116002249); accepts Medicare assignment
- Medical or professional school
- Harvard Medical School, 2018
- Entity
- Type 1 · individual
8 nearest dermatology physician records → All 2,083 in California → Look up another NPI →
Also registered at 320 Lennon LN
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Joel Acab, MDInternal Medicine Physician1518405661
- Vitas Alekna, MDOphthalmology Physician1770661860
- Mary Andre, P.T.Physical Therapist1740344779
- Lynn Arsenault, MDPediatrics Physician1972681054
- Ashley Batchelder, DPTPhysical Therapist1851450936
- Cynthia Bellitt, R.N.N.P.Women's Health Nurse Practitioner1851464630
Verify Ricardo Guerra in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A188585Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average dermatology physician in 2024
139 Medicare Part D claims for 89 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D. 30 claims were for opioids.
Most prescribed
- Doxycycline Monohydrate58 claims
- Hydrocodone-Acetaminophen29 claims
- Cefadroxil12 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
- Permanente Medical Group IncWalnut Creek, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ricardo Guerra among 2,083 dermatology physician records in California
Ricardo Guerra, M.D. is one of 2,083 dermatology physician records with a practice address in California. 83% 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 86% of them.
- NPI issued2018 · 86% of these records are older, 11% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2018 · median 2006 among the 1,450 with a school on file
- Record last updated2023 · 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 207N00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Dermatology Physician providers in California
There are 2,083 dermatology physician records in California.
All 2,083 in California → Every provider in Walnut Creek → Dermatology Physician nationwide →
The 8 dermatology physician records with the nearest ZIP codes
- Edward Becker, MDWalnut Creek, CA 945981962515858
- Paru Chaudhari, MDWalnut Creek, CA 945981811148224
- Errol Craig, M.D., PHDWalnut Creek, CA 945981659344281
- Christina Fonseca, M.D.Walnut Creek, CA 945981225222128
- Nancy Franklin, MDWalnut Creek, CA 945981669550745
- Stacey Hunt, MDWalnut Creek, CA 945981841362688
- Stewart Kupetz, MDWalnut Creek, CA 945981366516973
- Min-Wei Lee, M.D.Walnut Creek, CA 945981124014741
Common questions
What is Ricardo Guerra, M.D.'s NPI number?
Ricardo Guerra, M.D.'s National Provider Identifier (NPI) is 1558867036, issued on Apr 3, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Ricardo Guerra, M.D. located?
The NPPES record lists a practice address at 320 Lennon LN, Walnut Creek, CA, 94598. Phone: (925) 817-5678. Providers update this record themselves, so call before visiting.
How can I verify Ricardo Guerra, M.D.'s license?
NPPES lists California license number A188585, 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 Ricardo Guerra, M.D. prescribe under Medicare Part D?
In 2024, Ricardo Guerra, M.D. had 139 Medicare Part D claims for 89 beneficiaries; the average among dermatology physician prescribers was 797. 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.