Alonso Jose Marquez Fuenmayor, MD
Pulmonary Disease Physician · Riverside, CA
Alonso Jose Marquez Fuenmayor, MD is a pulmonary disease physician with a practice address in Riverside, California, and NPI 1952928319, issued on Jul 1, 2020. Check the license (California A207686, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Alonso Jose Marquez Fuenmayor
- Credential
- MD
- Primary taxonomy
- Pulmonary Disease Physician 207RP1001X
- License numbers
- A207686 CA
MT229847 PA
Self-reported in NPPES; status is on the state search - Practice location
- 4234 Riverwalk Pkwy Ste 230, Riverside, CA 92505
- Phone
- (951) 781-3672
- Enumerated
- Jul 1, 2020
- Record last updated
- Apr 22, 2026
- Fax
- (951) 781-0365
- Medicare enrollment
- Enrolled (PECOS I20241104003298); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest pulmonary disease physician records → All 1,443 in California → Look up another NPI →
Also registered at 4234 Riverwalk Pkwy Ste 230
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Charles Abreu, MDHospitalist Physician1942837323
- Faraz Afridi, MDPulmonary Disease Physician1871905257
- Masood Ahmad, M.D.Critical Care Medicine (Internal Medicine) Physician1073069332
- Mohamad Al Sayed, MDEndocrinology, Diabetes & Metabolism Physician1568428134
- Ahmad Alazzeh, MDPulmonary Disease Physician1194037945
- Judy Alfonso, PA-CPhysician Assistant1154471514
Verify Alonso Jose Marquez Fuenmayor in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A207686Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average pulmonary disease physician in 2024
182 Medicare Part D claims for 45 beneficiaries, against an average of 1,425 among the 11,596 providers of this specialty who prescribed in Part D.
Most prescribed
- Albuterol Sulfate Hfa22 claims
- Anoro Ellipta21 claims
- Tacrolimus13 claims
- Valganciclovir Hcl13 claims
- Imipenem-Cilastatin Sodium11 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: $137.33
2 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 8,806 providers of this specialty with any payment received $5,159.88 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
- Christiana Care Health Services IncNewark, DE
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alonso Jose Marquez Fuenmayor among 1,443 pulmonary disease physician records in California
Alonso Jose Marquez Fuenmayor, MD is one of 1,443 pulmonary disease physician records with a practice address in California. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 97% of them.
- NPI issued2020 · 97% of these records are older, under 1% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2015 · median 2002 among the 1,061 with a school on file
- Record last updated2026 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RP1001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pulmonary Disease Physician providers in California
There are 1,443 pulmonary disease physician records in California.
All 1,443 in California → Every provider in Riverside → Pulmonary Disease Physician nationwide →
The 8 pulmonary disease physician records with the nearest ZIP codes
- Faraz Afridi, MDRiverside, CA 925051871905257
- Ahmad Alazzeh, MDRiverside, CA 925051194037945
- Vinod Ambastha, MDRiverside, CA 925051467511170
- Long Bach, MDRiverside, CA 925051285701003
- Ahmed El Bershawi, M.D.Riverside, CA 925051619946654
- Zeron Ghazarian, M.D.Riverside, CA 925051063785756
- Salim Harianawala, M.D.Riverside, CA 925051710183868
- Heba Ismail, M.D.Riverside, CA 925051124296124
Common questions
What is Alonso Jose Marquez Fuenmayor, MD's NPI number?
Alonso Jose Marquez Fuenmayor, MD's National Provider Identifier (NPI) is 1952928319, issued on Jul 1, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Alonso Jose Marquez Fuenmayor, MD located?
The NPPES record lists a practice address at 4234 Riverwalk Pkwy Ste 230, Riverside, CA, 92505. Phone: (951) 781-3672. Providers update this record themselves, so call before visiting.
How can I verify Alonso Jose Marquez Fuenmayor, MD's license?
NPPES lists California license number A207686, 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 Alonso Jose Marquez Fuenmayor, MD prescribe under Medicare Part D?
In 2024, Alonso Jose Marquez Fuenmayor, MD had 182 Medicare Part D claims for 45 beneficiaries; the average among pulmonary disease physician prescribers was 1,425. 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.