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

Emergency Medicine

Karen L. Pike, MD

Works at hospitals in Mountain View, CA · California

Summary

Dr. Karen L. Pike, MD is an emergency medicine doctor at 1150 W El Camino Real, Mountain View, CA 94040. Phone: (650) 988-7667. Accepts Medicare assignment. In 2024, Karen L. Pike had 213 Original Medicare patients and 284 services. NPI 1497700553. 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: Emergency medicine doctor (Medicare lists Emergency Medicine)
  • Address: 1150 W El Camino Real, Mountain View, CA 94040 · Directions (1 more location)
  • Phone: (650) 988‑7667
  • Medicare: Accepts Medicare assignment
  • Hospital: El Camino Health
  • Group practice: El Camino Health Medical Network LLC
  • Medical school: Georgetown University School Of Medicine · graduated 1995 (31 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Karen L. Pike, 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 Karen L. Pike accept Medicare assignment?
Yes. Medicare's clinician data says Karen L. Pike 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 Karen L. Pike see?
In 2024, CMS data shows 213 Original Medicare patients and 284 services for Karen L. Pike. This counts Original Medicare only and measures volume, not quality.
What is Karen L. Pike's NPI number?
1497700553. 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 Karen L. Pike, 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 patients213
Services billed to Medicare284
Different services or procedures32
Participating Medicare providerYes
Average age of these patients79

Most frequent services

  1. Emergency department visit with high level of medical decision making (99285)91 services
  2. Emergency department visit with moderate level of medical decision making (99284)77 services
  3. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)25 services
  4. Critical care, first 30-74 minutes (99291)19 services
  5. Emergency department visit with low level of medical decision making (99283)11 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%
  • Arthritis53%
  • Ischemic heart disease38%
  • Chronic kidney disease38%
  • Diabetes31%

Hospitals where Karen L. Pike works

Medicare's Facility Affiliation Data lists Karen L. Pike 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.

  • El Camino HealthMountain View, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050308

Practice locations

Addresses where Karen L. Pike is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Karen L. Pike as a member of this group (CMS data updated October 2, 2026).

  • El Camino Health Medical Network LLC202 clinicians in the group

Specialties

Find other Emergency Medicine doctors in California →

Other emergency medicine doctors in Mountain View

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

All emergency medicine doctors in Mountain View →

Other clinicians in El Camino Health Medical Network LLC

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

Clinician information

CredentialMD
Medical schoolGeorgetown University School Of Medicine
Graduation year1995 (31 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1497700553
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