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ANDREA DARNELL DO
NPI 1760829618
Family Medicine in Walnut Creek, CA

Active since June 03, 2013PECOS EnrolledAccepts Medicare Assignment
1450 TREAT BLVD STE 250A, WALNUT CREEK, CA 94597(925) 838-4633 Get Directions Write a Review

NPPES record last updated: May 16, 2024. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: May 16, 2024, Aug 8, 2016 (2 updates tracked since 2016).

About Andrea Darnell Do NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ANDREA DARNELL DO (NPI 1760829618) is an individual family medicine provider in Walnut Creek, California, licensed in California (20A21271) and active in the NPI registry since June 2013. She is enrolled in Medicare PECOS, maintains a secondary practice location in Philadelphia, and is a graduate of Other (2013).

NPPES Registry Identity

NPI1760829618
Entity TypeIndividualFemale
Primary Taxonomy207Q00000X
Provider Legal NameANDREA DARNELLCredential: DO
Location Address1450 TREAT BLVD STE 250AWalnut Creek, CA 94597-2168
Mailing Address1450 Treat Blvd # 300Walnut Creek, CA 94597-2168 · (925) 952-2828
Phone(925) 838-4633
Sole ProprietorNo
Medical School CMSOtherGraduated 2013
Enumeration DateJune 3, 2013
Last NPPES UpdateMay 16, 20242 updates tracked since enumeration
NPPES CertifiedMay 16, 2024
✔ NPI 1760829618 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
Licenses✔ Licensed in CA · 20A21271✔ Licensed in PA · OS018092
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X · License OT015358 (PA)
1450 TREAT BLVD STE 250A, Walnut Creek, CA 94597
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Secondary Practice Location 1

Location 110800 Knights RdPhiladelphia, PA 19114-4200 · Phone (215) 612-5161

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Andrea Darnell Do is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5294021192
PECOS Enrollment IDI20240523002444
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Andrea Darnell reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

John Muir Physician Network
Same address
General Practice
1450 TREAT BLVD, SUITE 300
Walnut Creek, CA 94597
  • Reassigned Medicare billing, California enrollment
  • 650 clinicians in this Medicare group
NPI 1841407665 (925) 296-9872

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
165 services142 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
108 services95 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
35 services35 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000
An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.
26 services26 patients
Urinalysis, manual test 81002
A urinalysis is a simple, non-invasive test that checks the urine for various elements such as sugar, protein, and signs of infection. It can help detect many common conditions, including kidney disease and diabetes. The manual test involves a lab technician examining a urine sample.
17 services17 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94597 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$104.51 typical visit price
range $69.00 – $202.35
Typical copayment $26.12 (range $17.25 – $50.58)
Most-billed visit code 99203
Established Patient
$119.48 typical visit price
range $23.44 – $166.46
Typical copayment $29.87 (range $5.86 – $41.61)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
1 supplier12 claims12 services$67.60 avg. paid by Medicare
Portable oxygen concentrator, rental E1392
DME-Oxygen and Supplies · category DC002N
1 supplier12 claims12 services$32.41 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MAKI MATSUMURA NP-C
Nurse Practitioner
1450 TREAT BLVD STE 250A
WALNUT CREEK, CA 94597
Contra Costa County (925) 296-9740
DR. LIBRE JOHNSON M.D.
Family Medicine
1450 TREAT BLVD STE 250A
WALNUT CREEK, CA 94597
Contra Costa County (925) 296-9706

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Andrea Darnell's NPI number?

The NPI number for Andrea Darnell is 1760829618. It was assigned to this individual provider in the NPPES registry on June 3, 2013.

Where is Andrea Darnell located?

Andrea Darnell practices at 1450 Treat Blvd Ste 250A, Walnut Creek, CA 94597. The listed phone number is (925) 838-4633.

What is Andrea Darnell's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Andrea Darnell enrolled in Medicare?

Yes. Andrea Darnell is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Andrea Darnell's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Andrea Darnell reassigns Medicare benefits to John Muir Physician Network (Walnut Creek, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Andrea Darnell's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Andrea Darnell was last updated on May 16, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.