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General Surgery

Mario Roldan Jr., DO

Works at hospitals in Salinas, CA · California

Summary

Dr. Mario Roldan Jr., DO is a general surgeon at 236 San Jose St, Salinas, CA 93901. Phone: (831) 424-7389. Accepts Medicare assignment. In 2024, Mario Roldan Jr. had 100 Original Medicare patients and 216 services. NPI 1245691450. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: General surgeon (Medicare lists General Surgery)
  • Address: 236 San Jose St, Salinas, CA 93901 · Directions (1 more location)
  • Phone: (831) 424‑7389
  • Medicare: Accepts Medicare assignment
  • Hospital: Salinas Valley Health Medical Center
  • Group practice: SVMHS Clinics (+1 more)
  • Medical school: graduated 2016 (10 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Mario Roldan Jr., joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Mario Roldan Jr. accept Medicare assignment?
Yes. Medicare's clinician data says Mario Roldan Jr. accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Mario Roldan Jr. see?
In 2024, CMS data shows 100 Original Medicare patients and 216 services for Mario Roldan Jr.. This counts Original Medicare only and measures volume, not quality.
What is Mario Roldan Jr.'s NPI number?
1245691450. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Mario Roldan Jr., data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients100
Services billed to Medicare216
Different services or procedures44
Participating Medicare providerYes
Average age of these patients72

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)47 services
  2. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)37 services
  3. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)30 services
  4. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)22 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol75%
  • Diabetes50%
  • Arthritis36%
  • Ischemic heart disease27%
  • Chronic kidney disease27%

Hospitals where Mario Roldan Jr. works

Medicare's Facility Affiliation Data lists Mario Roldan Jr. at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Mario Roldan Jr. is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Mario Roldan Jr. as a member of these groups (CMS data updated October 2, 2026).

  • SVMHS Clinics259 clinicians in the group
  • Salinas Valley Memorial Healthcare System20 clinicians in the group

Specialties

Find other General Surgery doctors in California →

Other general surgeons in Salinas

Clinicians with the same Medicare primary specialty in Salinas, CA — not a recommendation.

All general surgeons in Salinas →

Other clinicians in SVMHS Clinics

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialDO
Graduation year2016 (10 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1245691450
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians