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Family Practice

Kathleen H. King, DO

Works at hospitals in Concord, CA · Walnut Creek, CA · California

Summary

Dr. Kathleen H. King, DO is a family doctor at 2700 Grant St, Suite 200, Concord, CA 94520. Phone: (925) 674-0500. Accepts Medicare assignment. In 2024, Kathleen H. King had 174 Original Medicare patients and 892 services. NPI 1457517229. 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 Kathleen H. King, 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 Kathleen H. King accept Medicare assignment?
Yes. Medicare's clinician data says Kathleen H. King 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 Kathleen H. King see?
In 2024, CMS data shows 174 Original Medicare patients and 892 services for Kathleen H. King. This counts Original Medicare only and measures volume, not quality.
What is Kathleen H. King's NPI number?
1457517229. 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 Kathleen H. King, 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 patients174
Services billed to Medicare892
Different services or procedures33
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)238 services
  2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)165 services
  3. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)85 services
  4. Injection of drug or substance under skin or into muscle (96372)76 services
  5. Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg (J3420)76 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 cholesterol75%
  • High blood pressure67%
  • Arthritis47%
  • Osteoporosis31%
  • Diabetes23%
  • Chronic kidney disease22%

Hospitals where Kathleen H. King works

Medicare's Facility Affiliation Data lists Kathleen H. King 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.

Practice locations

Addresses where Kathleen H. King is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Kathleen H. King as a member of this group (CMS data updated October 2, 2026).

  • John Muir Physician Network494 clinicians in the group

Specialties

Find other Family Practice doctors in California →

Other family doctors in Concord

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

All family doctors in Concord →

Other clinicians in John Muir Physician Network

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

Clinician information

CredentialDO
Graduation year2008 (18 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1457517229
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