Raymond J. Delorenzi, MD
Orthopaedic Surgery Physician · Merced, CA
Raymond J. Delorenzi, MD is an orthopaedic surgery physician with a practice address in Merced, California, and NPI 1104882539, issued on Apr 25, 2006. Check the license (California C183342, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Raymond J. Delorenzi
- Credential
- MD
- Primary taxonomy
- Orthopaedic Surgery Physician 207X00000X
- License number
- C183342 CA
Self-reported in NPPES; status is on the state search - Practice location
- 450 E Yosemite Ave Ste D, Merced, CA 95340
- Phone
- (350) 225-3602
- Enumerated
- Apr 25, 2006
- Record last updated
- May 7, 2026
- Fax
- (909) 752-8719
- Medicare enrollment
- Enrolled (PECOS I20221220001418); accepts Medicare assignment
- Medical or professional school
- Indiana University School Of Medicine, 1982
- Entity
- Type 1 · individual
8 nearest orthopaedic surgery physician records → All 2,276 in California → Look up another NPI →
Also registered at 450 E Yosemite Ave Ste D
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ibrahim Azer, MDSurgery Physician1093979205
- Billy Preece, NP-CFamily Nurse Practitioner1417525759
Verify Raymond J. Delorenzi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C183342Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
20% fewer Medicare Part D claims than the average orthopaedic surgery physician in 2024
276 Medicare Part D claims for 110 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 87 claims were for opioids.
Most prescribed
- Celecoxib85 claims
- Prednisone77 claims
- Hydrocodone-Acetaminophen44 claims
- Tramadol Hcl25 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: $431.70
3 payments; by number, the most common kind was food and beverage; the largest payer was Stryker Corporation. The 15,003 providers of this specialty with any payment received $23,022.89 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
- Dignity Health Medical FoundationMerced, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Raymond J. Delorenzi among 2,276 orthopaedic surgery physician records in California
Raymond J. Delorenzi, MD is one of 2,276 orthopaedic surgery physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 46% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated1982 · median 2003 among the 1,347 with a school on file
- Record last updated2026 · 66% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Orthopaedic Surgery Physician providers in California
There are 2,276 orthopaedic surgery physician records in California.
All 2,276 in California → Every provider in Merced → Orthopaedic Surgery Physician nationwide →
The 8 orthopaedic surgery physician records with the nearest ZIP codes
- Naseem Beauchman, M.D.Merced, CA 953401497983498
- Ricardo Pyfrom, MDMerced, CA 953401083788095
- Mario Sablan, D.O.Merced, CA 953401962618462
- Abner Ward, M.D.Merced, CA 953401063531291
- Lynn Cooman, M.D.Merced, CA 953411184814220
- Jeffrey McGillicuddy, MDManteca, CA 953361871698993
- Ronald Yamada, M.D.Manteca, CA 953361457337362
- Mark Hellner, MDMerced, CA 953481659384881
Common questions
What is Raymond J. Delorenzi, MD's NPI number?
Raymond J. Delorenzi, MD's National Provider Identifier (NPI) is 1104882539, issued on Apr 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Raymond J. Delorenzi, MD located?
The NPPES record lists a practice address at 450 E Yosemite Ave Ste D, Merced, CA, 95340. Phone: (350) 225-3602. Providers update this record themselves, so call before visiting.
How can I verify Raymond J. Delorenzi, MD's license?
NPPES lists California license number C183342, 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 Raymond J. Delorenzi, MD prescribe under Medicare Part D?
In 2024, Raymond J. Delorenzi, MD had 276 Medicare Part D claims for 110 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. 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.