Quick answers
- Does Nathaniel Soriano accept Medicare assignment?
- Yes. Medicare's clinician data says Nathaniel Soriano 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 Nathaniel Soriano see?
- In 2024, CMS data shows 376 Original Medicare patients and 1,253 services for Nathaniel Soriano. This counts Original Medicare only and measures volume, not quality.
- What is Nathaniel Soriano's NPI number?
- 1679890271. 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 Nathaniel Soriano, 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 patients | 376 |
|---|---|
| Services billed to Medicare | 1,253 |
| Different services or procedures | 38 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Critical care, first 30-74 minutes (99291)535 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)210 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)115 services
- Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)76 services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)51 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%
- Diabetes64%
- Heart failure54%
- Chronic kidney disease51%
- Ischemic heart disease50%
Hospitals where Nathaniel Soriano works
Medicare's Facility Affiliation Data lists Nathaniel Soriano 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.
- Pomona Valley Hospital Medical CenterPomona, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050231
- San Antonio Regional HospitalUpland, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050099
Practice locations
Addresses where Nathaniel Soriano is enrolled with Medicare (CMS data updated October 2, 2026).
- 1940 N Orange Grove AvePomona, CA 91767 (909) 865‑6900
- 9190 Haven AveRancho Cucamonga, CA 91730 (909) 581‑6732
Group practices
Medicare enrollment lists Nathaniel Soriano as a member of this group (CMS data updated October 2, 2026).
- Chaparral Medical Group Inc65 clinicians in the group
Specialties
Other internal medicine doctors in Pomona
Clinicians with the same Medicare primary specialty in Pomona, CA — not a recommendation.
Other clinicians in Chaparral Medical Group Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Rush Medical College Of Rush University |
| Graduation year | 2010 (16 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1679890271 |
| Corrections | Report 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians