Erin Chen, MD
Family Medicine Physician · San Carlos, CA
Erin Chen, MD is a family medicine physician with a practice address in San Carlos, California, and NPI 1659909083, issued on Mar 31, 2020. Check the license (California A181028, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Erin Chen
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A181028 CA
Self-reported in NPPES; status is on the state search - Practice location
- 301 Industrial RD, San Carlos, CA 94070
- Phone
- (650) 596-4000
- Enumerated
- Mar 31, 2020
- Record last updated
- Sep 26, 2023
- Medicare enrollment
- Enrolled (PECOS I20230927000454); 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 301 Industrial RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Maria Katrina Abad, AGPCNP-BCNurse Practitioner1306394952
- Maryam Adeel, M.D.Family Medicine Physician1285163998
- Jennifer Akazawa, MDFamily Medicine Physician1457971772
- Sarah Alamillo, PA-CPhysician Assistant1306349352
- Judith Alderman, N.P.Nurse Practitioner1407225121
- Omar Aljundi, NPNurse Practitioner1811464811
Verify Erin Chen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A181028Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average family medicine physician in 2024
391 Medicare Part D claims for 87 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.
Most prescribed
- Atorvastatin Calcium54 claims
- Levothyroxine Sodium31 claims
- Amlodipine Besylate27 claims
- Losartan Potassium17 claims
- Sertraline Hcl14 claims
- Fluticasone Propionate13 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: $169.24
8 payments; by number, the most common kind was food and beverage; the largest payer was BeiGene USA, 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
- Sutter Bay Medical FoundationSan Mateo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Erin Chen among 17,133 family medicine physician records in California
Erin Chen, MD 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 2020, is newer than 88% of them.
- NPI issued2020 · 88% of these records are older, 9% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2020 · median 2005 among the 10,652 with a school on file
- Record last updated2023 · 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).
35 family medicine physician records list a practice address in San Carlos
They are 35 of the 1,015 NPPES records with a practice address in San Carlos, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in San Carlos → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Kerri Ashling, MDSan Carlos, CA 940701154373587
- Catherine Baker, M.D.San Carlos, CA 940701639181852
- Richard Barrick, M.D.San Carlos, CA 940701629145040
- Margaret Chan, M.D.San Carlos, CA 940701265517791
- Kevin Chen, M.D.San Carlos, CA 940701881774420
- Steven Harris, M.D.San Carlos, CA 940701720298912
- Jolene Huie, MDSan Carlos, CA 940701235228867
- Karen Jackson, MDSan Carlos, CA 940701285786087
Common questions
What is Erin Chen, MD's NPI number?
Erin Chen, MD's National Provider Identifier (NPI) is 1659909083, issued on Mar 31, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Erin Chen, MD located?
The NPPES record lists a practice address at 301 Industrial RD, San Carlos, CA, 94070. Phone: (650) 596-4000. Providers update this record themselves, so call before visiting.
How can I verify Erin Chen, MD's license?
NPPES lists California license number A181028, 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 Erin Chen, MD prescribe under Medicare Part D?
In 2024, Erin Chen, MD had 391 Medicare Part D claims for 87 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.