Sierra Li'En Washington, MD
Obstetrics & Gynecology Physician · San Diego, CA
Sierra Li'En Washington, MD is an obstetrics & gynecology physician with a practice address in San Diego, California, and NPI 1386845162, issued on May 30, 2007. Check the license (California A99781, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Sierra Li'En Washington
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- A99781 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1075 Camino Del Rio S, San Diego, CA 92108
- Phone
- (619) 881-4500
- Enumerated
- May 30, 2007
- Record last updated
- Feb 15, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (866) 886-7824
- Medicare enrollment
- Enrolled (PECOS I20130807000205); accepts Medicare assignment
- Medical or professional school
- Harvard Medical School, 2005
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 1075 Camino Del Rio S
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Heather Anderson, RNAmbulatory Women's Health Care Registered Nurse1285140673
- Lydia Ayers, RNRegistered Nurse1386000297
- Melissa Barajas, RNRegistered Nurse1104511427
- Roselle Beltran, RNAdministrator Registered Nurse1114849940
- Hailey Blount, LCSWClinical Social Worker1831582956
- Janeen Burlison, WHNPWomen's Health Nurse Practitioner1376846386
Verify Sierra Li'En Washington in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A99781Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The MIPS final score for 2023 (Medicare payment program): 98.5 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- University Associates IN Obstetrics And Gynecology University FacultyStony Brook, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sierra Li'En Washington among 5,088 obstetrics & gynecology physician records in California
Sierra Li'En Washington, MD is one of 5,088 obstetrics & gynecology physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 48% of them.
- NPI issued2007 · 48% of these records are older, 38% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2005 · median 2004 among the 2,700 with a school on file
- Record last updated2016 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in California
There are 5,088 obstetrics & gynecology physician records in California.
All 5,088 in California → Every provider in San Diego → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Michael Cardenas, MDSan Diego, CA 921081922070242
- Grace Gates, MDSan Diego, CA 921081497730758
- Antoinette Marengo-Barbick, M.D.San Diego, CA 921081144200718
- Son Nguyen, M.D.San Diego, CA 921081548332513
- Jesse Rohloff, MDSan Diego, CA 921081407827447
- Katharine Sheehan, M.D.San Diego, CA 921081467524439
- Erin Shiv, M.D.San Diego, CA 921081588074397
- June Melin, MDSan Diego, CA 921091528075827
Common questions
What is Sierra Li'En Washington, MD's NPI number?
Sierra Li'En Washington, MD's National Provider Identifier (NPI) is 1386845162, issued on May 30, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Sierra Li'En Washington, MD located?
The NPPES record lists a practice address at 1075 Camino Del Rio S, San Diego, CA, 92108. Phone: (619) 881-4500. Providers update this record themselves, so call before visiting.
How can I verify Sierra Li'En Washington, MD's license?
NPPES lists California license number A99781, 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.
What is Sierra Li'En Washington, MD's MIPS final score?
The 2023 MIPS final score is 98.5 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.