Shanti Karuna Leon Guerrero, MD/MPH
Family Medicine Physician · Oakland, CA
Shanti Karuna Leon Guerrero, MD/MPH is a family medicine physician with a practice address in Oakland, California, and NPI 1386033090, issued on Jan 19, 2015. Check the license (California A155088, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Shanti Karuna Leon Guerrero
- Credential
- MD/MPH
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A155088 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3451 E 12TH St, Oakland, CA 94601
- Phone
- (510) 535-3500
- Enumerated
- Jan 19, 2015
- Record last updated
- Mar 29, 2023
- Fax
- (510) 535-3319
- Medicare enrollment
- Enrolled (PECOS I20190702001741); accepts Medicare assignment
- Medical or professional school
- Northwestern University Feinberg Medical School, 2015
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 3451 E 12TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Patricia ArteagaRegistered Nurse1619323870
- Melissa Ayres, MPH, RDNRegistered Dietitian1144067067
- Lidia Barajas Gonzalez, RNRegistered Nurse1780130450
- Paul Bayard, MDFamily Medicine Physician1922101237
- Shelli Bein, MDPediatrics Physician1982836078
- Julia Bley, MDObstetrics & Gynecology Physician1831357177
Verify Shanti Karuna Leon Guerrero in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A155088Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
71% fewer Medicare Part D claims than the average family medicine physician in 2024
1,014 Medicare Part D claims for 88 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 11 claims were for opioids.
Most prescribed
- Atorvastatin Calcium102 claims
- Metformin Hcl64 claims
- Amlodipine Besylate63 claims
- Lisinopril44 claims
- Fluticasone Propionate37 claims
- Gabapentin36 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
- LA Clinica DE LA Raza IncOakland, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Shanti Karuna Leon Guerrero among 17,133 family medicine physician records in California
Shanti Karuna Leon Guerrero, MD/MPH 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 2015, is newer than 74% of them.
- NPI issued2015 · 74% of these records are older, 24% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2015 · median 2005 among the 10,652 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 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Family Medicine Physician providers in California
There are 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Oakland → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Paul Bayard, MDOakland, CA 946011922101237
- Barbara Benzwi, MDOakland, CA 946011063512317
- Jaime Cortes, MDOakland, CA 946011265587778
- Asano Fertig, MDOakland, CA 946011013017268
- Christine Fratino, DOOakland, CA 946011841398542
- Thomas Halligan, MDOakland, CA 946011457454761
- Irene Kelly, MDOakland, CA 946011386747509
- Jill LeggOakland, CA 946011881771624
Common questions
What is Shanti Karuna Leon Guerrero, MD/MPH's NPI number?
Shanti Karuna Leon Guerrero, MD/MPH's National Provider Identifier (NPI) is 1386033090, issued on Jan 19, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Shanti Karuna Leon Guerrero, MD/MPH located?
The NPPES record lists a practice address at 3451 E 12TH St, Oakland, CA, 94601. Phone: (510) 535-3500. Providers update this record themselves, so call before visiting.
How can I verify Shanti Karuna Leon Guerrero, MD/MPH's license?
NPPES lists California license number A155088, 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 Shanti Karuna Leon Guerrero, MD/MPH prescribe under Medicare Part D?
In 2024, Shanti Karuna Leon Guerrero, MD/MPH had 1,014 Medicare Part D claims for 88 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.