Marcos Omar Escobar, MD
Family Medicine Physician · Fontana, CA
Marcos Omar Escobar, MD is a family medicine physician with a practice address in Fontana, California, and NPI 1821655481, issued on May 20, 2019. Check the license (California A178164, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Marcos Omar Escobar
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A178164 CA
Self-reported in NPPES; status is on the state search - Practice location
- 17234 Valley Blvd., Fontana, CA 92335
- Phone
- (833) 574-2273
- Enumerated
- May 20, 2019
- Record last updated
- Oct 15, 2024
- Medicare enrollment
- Enrolled (PECOS I20221005001454); accepts Medicare assignment
- Medical or professional school
- University Of California, Geffen School Of Medicine, 2019
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 17234 Valley Blvd.
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Matthew AllenPsychiatry Physician1679216121
- Austin Anderson, MDStudent in an Organized Health Care Education/Training Program1669969044
- Terrin Arceo, DOPsychiatry Physician1104520485
- Rouzbeh DarvishanStudent in an Organized Health Care Education/Training Program1295222768
- Sheena Ghalla, DOPsychiatry Physician1942903067
- Mark HalimChild & Adolescent Psychiatry Physician1558998542
Verify Marcos Omar Escobar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A178164Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
60% more Medicare Part D claims than the average family medicine physician in 2024
5,655 Medicare Part D claims for 640 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 87 claims were for opioids.
Most prescribed
- Atorvastatin Calcium525 claims
- Amlodipine Besylate272 claims
- Metformin Hcl263 claims
- Losartan Potassium244 claims
- Lisinopril223 claims
- Rosuvastatin Calcium206 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
- Southern California Permanente Medical GroupFontana, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
198 family medicine physician records list a practice address in Fontana
They are 198 of the 3,012 NPPES records with a practice address in Fontana, and 17,133 family medicine physician records in California.
All 198 in Fontana → All 17,133 in California → Every provider in Fontana →
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- Robert Abatecola, MDCastro Valley, CA1669551719
- Romeo Abaya, M.D.Cottonwood, CA1598053506
- Effiem Abbah, MD, MPHSan Francisco, CA1821185133
- Khuzeman Abbasi, MDSanta Rosa, CA1841979952
Common questions
What is Marcos Omar Escobar, MD's NPI number?
Marcos Omar Escobar, MD's National Provider Identifier (NPI) is 1821655481, issued on May 20, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Marcos Omar Escobar, MD located?
The NPPES record lists a practice address at 17234 Valley Blvd., Fontana, CA, 92335. Phone: (833) 574-2273. Providers update this record themselves, so call before visiting.
How can I verify Marcos Omar Escobar, MD's license?
NPPES lists California license number A178164, 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 Marcos Omar Escobar, MD prescribe under Medicare Part D?
In 2024, Marcos Omar Escobar, MD had 5,655 Medicare Part D claims for 640 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.