Hannah Nien, M.D.
Diagnostic Radiology Physician · Torrance, CA
Hannah Nien, M.D. is a diagnostic radiology physician with a practice address in Torrance, California, and NPI 1417183203, issued on Jun 8, 2009. Check the license (California A131459, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Hannah Nien
- Credential
- M.D.
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License number
- A131459 CA
Self-reported in NPPES; status is on the state search - Practice location
- 20929 Hawthorne Blvd, Torrance, CA 90503
- Phone
- (617) 818-2232
- Enumerated
- Jun 8, 2009
- Record last updated
- Sep 3, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20150904001581); accepts Medicare assignment
- Medical or professional school
- Tufts University School Of Medicine, 2009
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 4,500 in California → Look up another NPI →
Verify Hannah Nien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A131459Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $28.10
1 payment: food and beverage; the largest payer was Bard Peripheral Vascular, Inc. The 8,048 providers of this specialty with any payment received $2,488.38 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
- Moran Rowen And Dorsey IncOrange, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Hannah Nien among 4,500 diagnostic radiology physician records in California
Hannah Nien, M.D. is one of 4,500 diagnostic radiology 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 2009, is newer than 64% of them.
- NPI issued2009 · 64% of these records are older, 33% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2009 · median 2004 among the 3,130 with a school on file
- Record last updated2019 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Diagnostic Radiology Physician providers in California
There are 4,500 diagnostic radiology physician records in California.
All 4,500 in California → Every provider in Torrance → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Adah Duncan, MDTorrance, CA 905031609858422
- Marsha Guerrein, MDTorrance, CA 905031093790206
- Glenn Huettner, MDTorrance, CA 905031114900693
- John Jordan, MDTorrance, CA 905031720060791
- Robert Kolanz, MDTorrance, CA 905031447232822
- Shelby Lundahl, M.D.Torrance, CA 905031669874467
- Robert Marcus, MDTorrance, CA 905031700856341
- Lucas Nishioka, MDTorrance, CA 905031467434001
Common questions
What is Hannah Nien, M.D.'s NPI number?
Hannah Nien, M.D.'s National Provider Identifier (NPI) is 1417183203, issued on Jun 8, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Hannah Nien, M.D. located?
The NPPES record lists a practice address at 20929 Hawthorne Blvd, Torrance, CA, 90503. Phone: (617) 818-2232. Providers update this record themselves, so call before visiting.
How can I verify Hannah Nien, M.D.'s license?
NPPES lists California license number A131459, 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.
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.