Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Internal Medicine

Clay R. Angel, MD

Works at hospitals in Santa Cruz, CA · Watsonville, CA · California

Summary

Dr. Clay R. Angel, MD is an internal medicine doctor at 7373 W Lane, Stockton, CA 95210. Phone: (209) 476-2000. Accepts Medicare assignment. In 2024, Clay R. Angel had 119 Original Medicare patients and 348 services. NPI 1477522548. 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.

From official Medicare data

This page shows what Medicare's official clinician data says about Clay R. Angel, 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 Clay R. Angel accept Medicare assignment?
Yes. Medicare's clinician data says Clay R. Angel 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 Clay R. Angel see?
In 2024, CMS data shows 119 Original Medicare patients and 348 services for Clay R. Angel. This counts Original Medicare only and measures volume, not quality.
What is Clay R. Angel's NPI number?
1477522548. 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 Clay R. Angel, 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 patients119
Services billed to Medicare348
Different services or procedures11
Participating Medicare providerYes
Average age of these patients76

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)227 services
  2. Hospital discharge day management, more than 30 minutes (99239)52 services
  3. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)26 services
  4. Hospital discharge day management, 30 minutes or less (99238)13 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%
  • Arthritis47%
  • Chronic kidney disease46%
  • Heart failure45%

Hospitals where Clay R. Angel works

Medicare's Facility Affiliation Data lists Clay R. Angel 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.

  • Dominican HospitalSanta Cruz, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050242
  • Watsonville Community HospitalWatsonville, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050194

Practice locations

Addresses where Clay R. Angel is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Clay R. Angel as a member of this group (CMS data updated October 2, 2026).

  • Permanente Medical Group Inc10,996 clinicians in the group

Specialties

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Stockton

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

All internal medicine doctors in Stockton →

Other clinicians in Permanente Medical Group Inc

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

Clinician information

CredentialMD
Graduation year2001 (25 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1477522548
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