John Leslie Schoonmaker, D.O.
Family Medicine Physician · Menifee, CA
John Leslie Schoonmaker, D.O. is a family medicine physician with a practice address in Menifee, California, and NPI 1841231537, issued on Jun 10, 2006. Check the license (California 20A7169, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John Leslie Schoonmaker
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 20A7169 CA
Self-reported in NPPES; status is on the state search - Practice location
- 29826 Haun RD Ste 300, Menifee, CA 92586
- Phone
- (951) 679-7022
- Enumerated
- Jun 10, 2006
- Record last updated
- May 8, 2026
- Fax
- (888) 379-6223
- Medicare enrollment
- Enrolled (PECOS I20050610000800); accepts Medicare assignment
- Medical or professional school
- College Of Osteo Med Of The Pacific At Pomona, 1996
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 29826 Haun RD Ste 300
A shared address usually means a shared clinic or building; it does not show who employs whom.
- James Kingsley, MDInternal Medicine Physician1841687142
- Bianca Lucaci, NP-CFamily Nurse Practitioner1689331126
- Jamie Rogers, NPFamily Nurse Practitioner1396081360
Verify John Leslie Schoonmaker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A7169Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.7 times the Medicare Part D claims of the average family medicine physician in 2024
9,561 Medicare Part D claims for 622 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 328 claims were for opioids.
Most prescribed
- Atorvastatin Calcium446 claims
- Amlodipine Besylate363 claims
- Metformin Hcl349 claims
- Levothyroxine Sodium307 claims
- Lisinopril252 claims
- Losartan Potassium230 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.
Industry payments in 2024: $745.94
41 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Acute Care Associates OF California PCMurrieta, CA
- Menifee Global Multi Specialty Group, Inc.Menifee, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Leslie Schoonmaker among 17,133 family medicine physician records in California
John Leslie Schoonmaker, D.O. 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 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 59% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1996 · median 2005 among the 10,652 with a school on file
- Record last updated2026 · 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).
10 family medicine physician records list a practice address in Menifee
They are 10 of the 906 NPPES records with a practice address in Menifee, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Menifee → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Mary Chau, D.O.Sun City, CA 925861255365888
- Susan Danek, M.D.Sun City, CA 925861265572499
- Anthony Gallegos, MDMenifee, CA 925861750904231
- Vadim Gurvits, D.O.Menifee, CA 925861790725398
- Christine Hermiz, DOSun City, CA 925861437687720
- Kevin Nguyen, M.D.Menifee, CA 925861598739203
- John Overman, M.D.Sun City, CA 925861427069970
- Daniel Camarillo, MDMenifee, CA 925841073693552
Common questions
What is John Leslie Schoonmaker, D.O.'s NPI number?
John Leslie Schoonmaker, D.O.'s National Provider Identifier (NPI) is 1841231537, issued on Jun 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Leslie Schoonmaker, D.O. located?
The NPPES record lists a practice address at 29826 Haun RD Ste 300, Menifee, CA, 92586. Phone: (951) 679-7022. Providers update this record themselves, so call before visiting.
How can I verify John Leslie Schoonmaker, D.O.'s license?
NPPES lists California license number 20A7169, 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 John Leslie Schoonmaker, D.O. prescribe under Medicare Part D?
In 2024, John Leslie Schoonmaker, D.O. had 9,561 Medicare Part D claims for 622 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.