Yih-Dar Nien, MD
Surgery Physician · Encino, CA
Yih-Dar Nien, MD is a surgery physician with a practice address in Encino, California, and NPI 1164636262, issued on May 9, 2007. Check the license (California A101665, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Yih-Dar Nien
- Credential
- MD
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- A101665 CA
Self-reported in NPPES; status is on the state search - Practice location
- 15503 Ventura Blvd Ste 240, Encino, CA 91436
- Phone
- (818) 461-3321
- Enumerated
- May 9, 2007
- Record last updated
- Mar 6, 2025
- Medicare enrollment
- Enrolled (PECOS I20100215000427); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 3,118 in California → Look up another NPI →
Also registered at 15503 Ventura Blvd Ste 240
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Philip Biderman, M.D.Surgery Physician1427153360
- Michael Farhangian, M.D.Dermatology Physician1346690138
- Darren Freeman, D.O.Pain Medicine (Physical Medicine & Rehabilitation) Physician1326184896
- Kristi Kuiken, MSN, FNP-CFamily Nurse Practitioner1205441599
- Michael RobinsonSurgery Physician1861765471
Verify Yih-Dar Nien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A101665Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
12% fewer Medicare Part D claims than the average surgery physician in 2024
130 Medicare Part D claims for 95 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. 83 claims were for opioids.
Most prescribed
- Tramadol Hcl65 claims
- Hydrocodone-Acetaminophen11 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 99.1 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $52.23
1 payment: food and beverage; the largest payer was Intuitive Surgical, Inc. The 17,103 providers of this specialty with any payment received $3,513.80 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
- Ucla Associated General SurgeonsSanta Monica, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Yih-Dar Nien among 3,118 surgery physician records in California
Yih-Dar Nien, MD is one of 3,118 surgery physician records with a practice address in California. 75% 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 45% of them.
- NPI issued2007 · 45% of these records are older, 42% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2001 · median 2003 among the 1,901 with a school on file
- Record last updated2025 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgery Physician providers in California
There are 3,118 surgery physician records in California.
All 3,118 in California → Every provider in Encino → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Philip Biderman, M.D.Encino, CA 914361427153360
- Sarah GilyardEncino, CA 914361518385087
- Samuel Kashani, M.D.Encino, CA 914361184821407
- Parsa Mohebi, MDEncino, CA 914361275576506
- Michael RobinsonEncino, CA 914361861765471
- Nojan Toomari, D.O.Encino, CA 914361326364373
- Ashu Garg, MDSherman Oaks, CA 914231558627174
- Babak Eghbalieh, MD FACSSherman Oaks, CA 914111770774770
Common questions
What is Yih-Dar Nien, MD's NPI number?
Yih-Dar Nien, MD's National Provider Identifier (NPI) is 1164636262, issued on May 9, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Yih-Dar Nien, MD located?
The NPPES record lists a practice address at 15503 Ventura Blvd Ste 240, Encino, CA, 91436. Phone: (818) 461-3321. Providers update this record themselves, so call before visiting.
How can I verify Yih-Dar Nien, MD's license?
NPPES lists California license number A101665, 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 Yih-Dar Nien, MD prescribe under Medicare Part D?
In 2024, Yih-Dar Nien, MD had 130 Medicare Part D claims for 95 beneficiaries; the average among surgery physician prescribers was 147. Part D covers Medicare prescriptions only.
What is Yih-Dar Nien, MD's MIPS final score?
The 2023 MIPS final score is 99.1 of 100, reported for the practice group. 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.