Jonnel Ramos Constantino, M.D.
Hospitalist Physician · Orange, CA
Jonnel Ramos Constantino, M.D. is a hospitalist physician with a practice address in Orange, California, and NPI 1124246350, issued on Apr 23, 2007. Check the license (California A89569, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jonnel Ramos Constantino
- Credential
- M.D.
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- A89569 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1800 E Heim Ave, Orange, CA 92865
- Phone
- (909) 427-5310
- Enumerated
- Apr 23, 2007
- Record last updated
- Dec 6, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (909) 427-4107
- Medicare enrollment
- Enrolled (PECOS I20070915000311); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Verify Jonnel Ramos Constantino in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A89569Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
54% fewer Medicare Part D claims than the average hospitalist physician in 2024
241 Medicare Part D claims for 103 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. 12 claims were for opioids.
Most prescribed
- Furosemide23 claims
- Solu-Medrol17 claims
- Pradaxa12 claims
- Prednisone12 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 GroupOntario, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jonnel Ramos Constantino among 3,099 hospitalist physician records in California
Jonnel Ramos Constantino, M.D. is one of 3,099 hospitalist physician records with a practice address in California. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 27% of them.
- NPI issued2007 · 27% of these records are older, 66% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated1999 · median 2010 among the 2,505 with a school on file
- Record last updated2021 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in California
There are 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in Orange → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Quincy Almond, M.D.Orange, CA 928681578573697
- Alpesh Amin, MDOrange, CA 928681457394801
- Sean Amos, M.D.Orange, CA 928681992715007
- Andrea Avery, MDOrange, CA 928681144300229
- Amish Dangodara, MDOrange, CA 928681093895195
- Israel De Alba, MDOrange, CA 928681639259732
- Diego Gonzalez, M.D.Orange, CA 928681326058371
- Kang Hsu, M.D.Orange, CA 928681184693285
Common questions
What is Jonnel Ramos Constantino, M.D.'s NPI number?
Jonnel Ramos Constantino, M.D.'s National Provider Identifier (NPI) is 1124246350, issued on Apr 23, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Jonnel Ramos Constantino, M.D. located?
The NPPES record lists a practice address at 1800 E Heim Ave, Orange, CA, 92865. Phone: (909) 427-5310. Providers update this record themselves, so call before visiting.
How can I verify Jonnel Ramos Constantino, M.D.'s license?
NPPES lists California license number A89569, 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 Jonnel Ramos Constantino, M.D. prescribe under Medicare Part D?
In 2024, Jonnel Ramos Constantino, M.D. had 241 Medicare Part D claims for 103 beneficiaries; the average among hospitalist physician prescribers was 521. 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.