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Healthcare Providers & Facilities in Walnut Creek, CA

Public healthcare directory of 6,187 individual practitioners and 777 healthcare facilities located in Walnut Creek, California.

6,187 Practitioners
777 Facilities
276 Specialties

Medical Specialties in Walnut Creek

Select a specialty to view practitioner listings, practice locations, and qualifications.

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All Specialties in Walnut Creek

Specialties with enough public records for a comparison with U.S. figures, besides those named above, plus the 60 largest of 225 more with at least one listed practitioner. Number of practitioners in brackets.

Chiropractic Providers

Dietary & Nutritional Service Providers

Eye and Vision Services Providers

Nursing Service Related Providers

Pharmacy Service Providers

Podiatric Medicine & Surgery Service Providers

Speech, Language and Hearing Service Providers

Featured Healthcare Providers in Walnut Creek

Practitioner profiles in Walnut Creek, CA with recent CMS Medicare or Open Payments data.

James Mattingly

Dentist - General Practice

130 La Casa Via, Walnut Creek, CA
Phone: 9259335446
NPI 1245329408

Dr. Eugenia Kang , MD

Surgery

Medicare Accepted
130 La Casa Via # 3-211, Walnut Creek, CA
Phone: 9259330984
NPI 1124280672

Dr. Tyler Clark , MD

Orthopaedic Surgery - Hand Surgery

Medicare Accepted
2625 Shadelands Dr, Walnut Creek, CA
Phone: 9259398585
NPI 1831453778
1855 San Miguel Drive, Walnut Creek, CA
Phone: 9259352700
NPI 1417070251

Dr. Paul Korn , MD

Internal Medicine

Medicare Accepted
320 Lennon Ln, Walnut Creek, CA
Phone: 9259062000
NPI 1063590164

Dr. Susan Rapp , MD

Internal Medicine

Medicare Accepted
320 Lennon Ln, Walnut Creek, CA
Phone: 9259062040
NPI 1154409225

Largest Cities in California

Other California cities with a full directory, by the number of active practitioners listed in NPPES.

How Walnut Creek compares with the U.S.

Compared with the U.S. as a whole, Walnut Creek has more clinicians in Occupational Therapist - Hand (24.0x), clinicians in Allergy & Immunology (17.1x) and clinicians in Physical Therapist - Orthopedic (16.4x) per 100,000 residents.

Walnut Creek has 8,827 active clinicians per 100,000 residents, compared with 2,198 for the U.S.

What these numbers mean

Clinicians per 100,000 residents compares places of different sizes. We count active clinicians who list a practice address in the area in the federal NPI registry (NPPES) and divide by the number of people who live there, according to the U.S. Census Bureau. The U.S. rate is the same calculation for the whole country.

A higher number does not mean it is easier to get an appointment, that wait times are shorter, or that care is better. It also does not show how many clinicians are accepting new patients or which insurance plans they take. A lower number does not by itself mean there is a shortage.

City counts use the city name in each clinician's practice address. That postal city can cover a larger or smaller area than the city limits the Census Bureau uses for population, and many clinicians list only one address even if they work in several places. Cities with hospitals or large medical centers often list more specialists than the number of residents alone would suggest, because patients also come from nearby areas.

90% of clinicians in Walnut Creek listed in the CMS Medicare file (1,266 of 1,408) accept Medicare assignment. That is similar to the California share of 91%.

Only 1,408 of 6,187 active clinicians in Walnut Creek appear in the CMS Medicare file, so this share describes that smaller group.

What is Medicare assignment?

A clinician who accepts Medicare assignment agrees to take the Medicare-approved amount as full payment for services that Original Medicare covers. You usually still pay your deductible and coinsurance. This comes from the CMS Doctors and Clinicians file and applies to Original Medicare only. Medicare Advantage plans have their own provider networks. It does not show whether a clinician is taking new patients.

Some clinicians are listed as "may accept assignment," which means they can decide case by case. Clinicians without an assignment flag, or who are not in the CMS file, are not counted as accepting assignment. That does not mean they refuse Medicare. Ask the office before your visit.

28% of clinicians in Walnut Creek listed in the CMS Medicare file (400 of 1,408) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is similar to the California share of 28%.

About the telehealth indicator

The telehealth indicator comes from CMS. It marks clinicians whose recent paid Medicare claims include services delivered by telehealth. It means a clinician has provided some services by telehealth, not that every visit can be done online. A clinician without the indicator may still offer telehealth, for example to patients who are not on Medicare. Ask the office which visits can be done by video or phone.

These figures summarize public federal data. They do not measure quality of care, appointment availability, or whether a clinician accepts your insurance or new patients. Registry addresses can be out of date. Please confirm details directly with the office and your plan. This information is not medical advice.

Prepared by T-MedInfo from NPPES, CMS and U.S. Census Bureau data. Questions or corrections: support@true-medinfo.com ยท Methodology

Sources: Clinician counts and practice addresses: NPPES NPI Registry, Centers for Medicare & Medicaid Services (CMS), data as of August 2026. Medicare assignment and telehealth indicators: CMS Doctors and Clinicians National Downloadable File. Population: U.S. Census Bureau, American Community Survey 2020-2024 5-Year Estimates, Table B01003 (Total Population).

Walnut Creek CMS Healthcare & Financial Disclosures

CMS Part D Prescribers (2024), Open Payments (program year 2025), Medicare (PECOS) enrollment and Part B (2024) data for Walnut Creek, CA

Source: CMS public datasets

Healthcare operations in Walnut Creek, CA encompass 6,187 active individual practitioners and 777 registered medical facilities across 276 clinical specialties.

According to CMS Medicare Part D analytics for 2024, prescription drug volume in Walnut Creek accounts for $206.6 Million across 1,026,365 prescription claims. 2,024 local practitioners have a Medicare (PECOS) enrollment record. Open Payments data for program year 2025 list $2.5 Million in payments reported by companies to 870 local practitioners; a reported payment does not necessarily mean the financial relationship is improper.

Medicare Part D Prescriptions (2024) $206.6M 1,026,365 Prescription Claims Source: data.cms.gov
Open Payments Sunshine Act (2025) $2.5M 870 Recipients Disclosed A reported payment does not necessarily mean the financial relationship is improper. Source: openpaymentsdata.cms.gov
Medicare (PECOS) Enrollment 2,024 Enrolled Medicare Practitioners Source: data.cms.gov
Medicare Part B Allowed Volume (2024) $180.6M 3,100,432 Services Performed Source: data.cms.gov

CMS PECOS: Eligible to Order or Refer for Medicare in Walnut Creek

Part B Lab & Imaging Eligible: 1,728
Durable Medical Equipment (DME): 1,803
Home Health Agency (HHA): 1,537
Source: CMS Order and Referring