Wendy Mak, D.O.
Family Medicine Physician · Northridge, CA
Wendy Mak, D.O. is a family medicine physician with a practice address in Northridge, California, and NPI 1508250036, issued on Mar 23, 2015. Check the license (California 20A15395, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Wendy Mak
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 20A15395 CA
Self-reported in NPPES; status is on the state search - Practice location
- 18460 Roscoe Blvd, Northridge, CA 91325
- Phone
- (818) 885-5480
- Enumerated
- Mar 23, 2015
- Record last updated
- May 11, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20171003007073); 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 18460 Roscoe Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Gerard De GuiaStudent in an Organized Health Care Education/Training Program1306595921
- Mary Dickens, N.P.Women's Health Nurse Practitioner1821085374
Verify Wendy Mak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A15395Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
50% fewer Medicare Part D claims than the average family medicine physician in 2024
1,762 Medicare Part D claims for 164 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium285 claims
- Amlodipine Besylate139 claims
- Losartan Potassium120 claims
- Metformin Hcl84 claims
- Jardiance81 claims
- Olmesartan Medoxomil61 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: $286.44
8 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. 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 one group practice
- Asian Pacific Health Care Venture, Inc.Los Angeles, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Wendy Mak among 17,133 family medicine physician records in California
Wendy Mak, 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 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 updated2021 · 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).
55 family medicine physician records list a practice address in Northridge
They are 55 of the 2,598 NPPES records with a practice address in Northridge, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Northridge → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Kathy Cairo, M.D.Northridge, CA 913251699878900
- Fausto Cordero, MDNorthridge, CA 913251124052477
- Pamela Davis, MDNorthridge, CA 913251386652196
- Elizabeth Eddy-Bertrand, MDNorthridge, CA 913251669573218
- Susan Hopkins, MDNorthridge, CA 913251700987369
- Viviana Ionescu-Tiba, MDNorthridge, CA 913251588737720
- Christopher Kuhlman, MDNorthridge, CA 913251629170006
- Hwe-Seung Lee, MDNorthridge, CA 913251083717391
Common questions
What is Wendy Mak, D.O.'s NPI number?
Wendy Mak, D.O.'s National Provider Identifier (NPI) is 1508250036, issued on Mar 23, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Wendy Mak, D.O. located?
The NPPES record lists a practice address at 18460 Roscoe Blvd, Northridge, CA, 91325. Phone: (818) 885-5480. Providers update this record themselves, so call before visiting.
How can I verify Wendy Mak, D.O.'s license?
NPPES lists California license number 20A15395, 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 Wendy Mak, D.O. prescribe under Medicare Part D?
In 2024, Wendy Mak, D.O. had 1,762 Medicare Part D claims for 164 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.