Mark William Ralph, MD
Family Medicine Physician · Los Angeles, CA
Mark William Ralph, MD is a family medicine physician with a practice address in Los Angeles, California, and NPI 1730600388, issued on Jul 5, 2017. Check the license (California 169633, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mark William Ralph
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 169633 CA
4301113221 MI
Self-reported in NPPES; status is on the state search - Practice location
- 808 W 58TH St, Los Angeles, CA 90037
- Phone
- (323) 541-1411
- Enumerated
- Jul 5, 2017
- Record last updated
- Aug 12, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20210526001939); 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 808 W 58TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Drew Ales-Pichugin, NPNurse Practitioner1932957826
- Heather AlexanderCounselor1295434322
- Ashley AlvarezNurse Practitioner1558005116
- Justin Amador, FNPFamily Nurse Practitioner1760772321
- Ivan AndradeMarriage & Family Therapist1811586894
- Zoe ArmasFamily Nurse Practitioner1316459274
Verify Mark William Ralph in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 169633Check 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 family medicine physician in 2024
612 Medicare Part D claims for 78 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium56 claims
- Metformin Hcl52 claims
- Amlodipine Besylate50 claims
- Losartan Potassium37 claims
- Lisinopril25 claims
- Ibuprofen21 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
- St. John's Community HealthLos Angeles, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark William Ralph among 17,133 family medicine physician records in California
Mark William Ralph, 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 2017, is newer than 79% of them.
- NPI issued2017 · 79% of these records are older, 18% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2017 · median 2005 among the 10,652 with a school on file
- Record last updated2020 · 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).
829 family medicine physician records list a practice address in Los Angeles
They are 829 of the 69,537 NPPES records with a practice address in Los Angeles, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Los Angeles → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Vicki Anakwenze, M.D,Los Angeles, CA 900371992986947
- Sushant Bandarpalle, D.O.Los Angeles, CA 900371487073839
- Danielle Basurco, M.D.Los Angeles, CA 900371871893040
- Cadrin Gill, MDLos Angeles, CA 900371891851861
- Peter Kim, MDLos Angeles, CA 900371750902003
- Glenn Lopez, M.D., M.P.H.Los Angeles, CA 900371184714040
- Alyssa Ognenovski, M.D.Los Angeles, CA 900371215319025
- Joni Parker, MDLos Angeles, CA 900371609806900
Common questions
What is Mark William Ralph, MD's NPI number?
Mark William Ralph, MD's National Provider Identifier (NPI) is 1730600388, issued on Jul 5, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Mark William Ralph, MD located?
The NPPES record lists a practice address at 808 W 58TH St, Los Angeles, CA, 90037. Phone: (323) 541-1411. Providers update this record themselves, so call before visiting.
How can I verify Mark William Ralph, MD's license?
NPPES lists California license number 169633, 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 Mark William Ralph, MD prescribe under Medicare Part D?
In 2024, Mark William Ralph, MD had 612 Medicare Part D claims for 78 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.