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

Physician Assistant

Ruth N. Volkenant, PA

Works at hospitals in Greenbrae, CA · California

Summary

Ruth N. Volkenant, PA is a physician assistant at 880 Apollo St, Suite 217, El Segundo, CA 90245. Phone: (310) 560-7480. Accepts Medicare assignment. In 2024, Ruth N. Volkenant had 201 Original Medicare patients and 1,843 services. NPI 1174277842. 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: Physician assistant
  • Address: 880 Apollo St, Suite 217, El Segundo, CA 90245 · Directions
  • Phone: (310) 560‑7480
  • Medicare: Accepts Medicare assignment
  • Hospital: Marinhealth Medical Center
  • Group practice: Geriatric Support Medical Group PC
  • School: graduated 2021
  • Gender (as listed): Female
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Ruth N. Volkenant, 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 Ruth N. Volkenant accept Medicare assignment?
Yes. Medicare's clinician data says Ruth N. Volkenant 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 Ruth N. Volkenant see?
In 2024, CMS data shows 201 Original Medicare patients and 1,843 services for Ruth N. Volkenant. This counts Original Medicare only and measures volume, not quality.
What is Ruth N. Volkenant's NPI number?
1174277842. 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 Ruth N. Volkenant, 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 patients201
Services billed to Medicare1,843
Different services or procedures24
Participating Medicare providerYes
Average age of these patients82

Most frequent services

  1. Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes (99349)960 services
  2. Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more (99308)359 services
  3. Residence visit for new patient with high level of medical decision making, per day, if using time, at least 75 minutes (99345)71 services
  4. Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes (99348)69 services
  5. Initial nursing facility care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99304)53 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%
  • Depression58%
  • Alzheimer's disease or dementia50%
  • Anxiety46%
  • Heart failure46%

Hospitals where Ruth N. Volkenant works

Medicare's Facility Affiliation Data lists Ruth N. Volkenant 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.

  • Marinhealth Medical CenterGreenbrae, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050360

Practice locations

Addresses where Ruth N. Volkenant is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Ruth N. Volkenant as a member of this group (CMS data updated October 2, 2026).

  • Geriatric Support Medical Group PC38 clinicians in the group

Specialties

Find other clinicians: Physician Assistant, California →

Other physician assistants in El Segundo

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

All physician assistants in El Segundo →

Other clinicians in Geriatric Support Medical Group PC

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

Clinician information

CredentialPA
Graduation year2021
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1174277842
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