Robert L. Gross Jr., DO

Medicare activity in 2024

Official CMS public-use data for Robert L. Gross 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.

Most frequent services

1. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)396 services
2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)251 services
3. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)141 services
4. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)125 services
5. Hospital discharge day management, more than 30 minutes (99239)106 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%
• Arthritis46%
• Diabetes37%
• COPD37%
• Ischemic heart disease36%

Hospitals where Robert L. Gross Jr. works

Medicare's Facility Affiliation Data lists Robert L. Gross 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.

• Kern Valley Healthcare DistrictLake Isabella, CA · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 051314

Practice locations

Addresses where Robert L. Gross Jr. is enrolled with Medicare (CMS data updated October 2, 2026).

• 1535 N China Lake Blvd, Suite BRidgecrest, CA 93555
• 6412 Laurel AveLake Isabella, CA 93240
• 6425 Lynch Canyon DrLake Isabella, CA 93240 (760) 379‑8630
• PO Box, Suite 1628Lake Isabella, CA 93240

Group practices

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

• Kern Valley Healthcare District20 clinicians in the group
• Sienna Medical Corporation4 clinicians in the group

Specialties

• Internal Medicineprimary
• Hospitalistalso

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Ridgecrest

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

• Andrew J. Modic, MD
• Carol K. Castro, MD
• Jeffery Tun, MD
• Amikjit S. Reen, MD
• Douglas E. Roberts Jr., MD
• Ehssan Pour Ramezani, MD
• Minu Ambika Rajendran, MD
• Azadeh Brumand, DO

All internal medicine doctors in Ridgecrest →

Other clinicians in Kern Valley Healthcare District

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

• Ronald M. Barnes, MD
• Cody E. Bulgarelli, PA
• Miranda E. Everett, PA
• Kris B. Hall, MD
• Peter Newell, MD
• Gregory D. Davis, PA

Clinician information

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