Andrea Darnell, DO
Family Medicine Physician · Walnut Creek, CA
Andrea Darnell, DO is a family medicine physician with a practice address in Walnut Creek, California, and NPI 1760829618, issued on Jun 3, 2013. Check the license (California 20A21271, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Andrea Darnell
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 20A21271 CA
OS018092 PA
OT015358 PA
Self-reported in NPPES; status is on the state search - Practice location
- 1450 Treat Blvd Ste 250A, Walnut Creek, CA 94597
- Phone
- (925) 838-4633
- Enumerated
- Jun 3, 2013
- Record last updated
- May 16, 2024
- Medicare enrollment
- Enrolled (PECOS I20240523002444); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 1450 Treat Blvd Ste 250A
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Libre Johnson, M.D.Family Medicine Physician1770683658
- Maki Matsumura, NP-CNurse Practitioner1013316488
Verify Andrea Darnell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A21271Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
62% fewer Medicare Part D claims than the average family medicine physician in 2024
1,334 Medicare Part D claims for 433 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 16 claims were for opioids.
Most prescribed
- Atorvastatin Calcium71 claims
- Lisinopril52 claims
- Rosuvastatin Calcium50 claims
- Amlodipine Besylate49 claims
- Losartan Potassium40 claims
- Levothyroxine Sodium38 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $21.83
1 payment: food and beverage; the largest payer was Boehringer Ingelheim Pharmaceuticals, Inc. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- John Muir Physician NetworkWalnut Creek, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Andrea Darnell among 17,133 family medicine physician records in California
Andrea Darnell, DO is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 68% of them.
- NPI issued2013 · 68% of these records are older, 29% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2013 · median 2005 among the 10,652 with a school on file
- Record last updated2024 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
116 family medicine physician records list a practice address in Walnut Creek
They are 116 of the 6,170 NPPES records with a practice address in Walnut Creek, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Walnut Creek → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Russell Alpert, M.D.Walnut Creek, CA 945971235182544
- John Cho, M.D.Walnut Creek, CA 945971609816107
- Grace Chou, M.D.Walnut Creek, CA 945971053309369
- Robert Eidus, MDWalnut Creek, CA 945971215901871
- Lance Gee, M.D.Walnut Creek, CA 945971497731665
- Deborah Greer, M.D.Walnut Creek, CA 945971003851858
- Lawren Hicks, M.D.Walnut Creek, CA 945971619912680
- Seigfred Jalalon, M.D.Walnut Creek, CA 945971043231038
Common questions
What is Andrea Darnell, DO's NPI number?
Andrea Darnell, DO's National Provider Identifier (NPI) is 1760829618, issued on Jun 3, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Andrea Darnell, DO located?
The NPPES record lists a practice address at 1450 Treat Blvd Ste 250A, Walnut Creek, CA, 94597. Phone: (925) 838-4633. Providers update this record themselves, so call before visiting.
How can I verify Andrea Darnell, DO's license?
NPPES lists California license number 20A21271, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Andrea Darnell, DO prescribe under Medicare Part D?
In 2024, Andrea Darnell, DO had 1,334 Medicare Part D claims for 433 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.