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Healthcare Providers & Facilities in Walnut, CA

Public healthcare directory of 317 individual practitioners and 143 healthcare facilities located in Walnut, California.

317 Practitioners
143 Facilities
72 Specialties

Medical Specialties in Walnut

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

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All Specialties in Walnut

Specialties with enough public records for a comparison with U.S. figures, besides those named above, plus the 60 largest of 68 more with at least one listed practitioner. Number of practitioners in brackets.

Dietary & Nutritional Service Providers

Eye and Vision Services Providers

Nursing Service Providers

Nursing Service Related Providers

Pharmacy Service Providers

Speech, Language and Hearing Service Providers

Featured Healthcare Providers in Walnut

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

Gulrukh Saeed , PT

Physical Therapist

Medicare Accepted
18856 Amar Rd, Walnut, CA
Phone: 6266678600
NPI 1518253871

In-Hyang Choi

Nurse Practitioner - Family

20627 Golden Springs Dr Ste 2d, Walnut, CA
Phone: 9094800200
NPI 1588142137

Dr. Dario Manese , DMD

Dentist

19665 Valley Blvd, Walnut, CA
Phone: 9095988820
NPI 1417289745

Dr. Derek Chen , DDS

Dentist - General Practice

20265 Valley Blvd, Walnut, CA
Phone: 9098691120
NPI 1104248582

Shemika Carter , NURSE PRACTITIONER

Nurse Practitioner - Primary Care

Medicare Accepted
20709 Golden Springs Dr Ste 106, Walnut, CA
Phone: 8449382828
NPI 1538635693

Dr. Marie Phan , PharmD

Pharmacist

350 N Lemon Ave, Walnut, CA
Phone: 9095957431
NPI 1386944379

Largest Cities in California

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

How Walnut compares with the U.S.

Compared with the U.S. as a whole, Walnut has more clinicians in Dentist - General Practice (2.5x) and Dentists (1.9x) per 100,000 residents.

It has fewer Physical Therapists (60% of the U.S. rate) per 100,000 residents.

Walnut has 1,148 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.

88% of clinicians in Walnut listed in the CMS Medicare file (30 of 34) accept Medicare assignment. That is similar to the California share of 91%.

Only 34 of 317 active clinicians in Walnut 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.

21% of clinicians in Walnut listed in the CMS Medicare file (7 of 34) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is lower than 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 CMS Healthcare & Financial Disclosures

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

Source: CMS public datasets

Healthcare operations in Walnut, CA encompass 317 active individual practitioners and 143 registered medical facilities across 72 clinical specialties.

According to CMS Medicare Part D analytics for 2024, prescription drug volume in Walnut accounts for $1.0 Million across 9,749 prescription claims. 85 local practitioners have a Medicare (PECOS) enrollment record. Open Payments data for program year 2025 list $0.0 Million in payments reported by companies to 37 local practitioners; a reported payment does not necessarily mean the financial relationship is improper.

Medicare Part D Prescriptions (2024) $1.0M 9,749 Prescription Claims Source: data.cms.gov
Open Payments Sunshine Act (2025) $0.0M 37 Recipients Disclosed A reported payment does not necessarily mean the financial relationship is improper. Source: openpaymentsdata.cms.gov
Medicare (PECOS) Enrollment 85 Enrolled Medicare Practitioners Source: data.cms.gov
Medicare Part B Allowed Volume (2024) $1.6M 37,309 Services Performed Source: data.cms.gov

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

Part B Lab & Imaging Eligible: 45
Durable Medical Equipment (DME): 49
Home Health Agency (HHA): 38
Source: CMS Order and Referring