Nathan Lim
Internal Medicine Physician · Downey, CA
Nathan Lim is an internal medicine physician with a practice address in Downey, California, and NPI 1396286720, issued on Mar 18, 2017. Check the license (California A157848, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Nathan Lim
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A157848 CA
Self-reported in NPPES; status is on the state search - Practice location
- 11480 Brookshire Ave Ste 204, Downey, CA 90241
- Phone
- (562) 904-4466
- Enumerated
- Mar 18, 2017
- Record last updated
- Aug 12, 2022
- Fax
- (562) 904-4467
- Medicare enrollment
- Enrolled (PECOS I20221104001441); accepts Medicare assignment
- Medical or professional school
- Boston University School Of Medicine, 2017
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 11480 Brookshire Ave Ste 204
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Nathan Lim in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A157848Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
40% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,911 Medicare Part D claims for 345 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 29 claims were for opioids.
Most prescribed
- Methotrexate252 claims
- Hydroxychloroquine Sulfate219 claims
- Prednisone157 claims
- Alendronate Sodium123 claims
- Ibuprofen110 claims
- Diclofenac Sodium108 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): 76.3 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: $192.21
2 payments; by number, the most common kind was food and beverage; the largest payer was Edwards Lifesciences Corporation. The 50,334 providers of this specialty with any payment received $1,303.06 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
- Pih Health PhysiciansDowney, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nathan Lim among 17,696 internal medicine physician records in California
Nathan Lim is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 81% of them.
- NPI issued2017 · 81% of these records are older, 16% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2017 · median 2004 among the 11,065 with a school on file
- Record last updated2022 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
114 internal medicine physician records list a practice address in Downey
They are 114 of the 3,607 NPPES records with a practice address in Downey, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Downey → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Nazar Al-Bussam, MDDowney, CA 902411003999145
- Domingo Barrientos, M.D.Downey, CA 902411184685281
- Arthur Carrasco, M.D.Downey, CA 902411588601595
- Shahryar Davari, MDDowney, CA 902411346244373
- Henry Do, M.D.Downey, CA 902411538115290
- Alan Frischer, M.D.Downey, CA 902411982701454
- Narayana Gunda, M.D.Downey, CA 902411720026271
- Vinod Patel, M.D.Downey, CA 902411043226756
Common questions
What is Nathan Lim's NPI number?
Nathan Lim's National Provider Identifier (NPI) is 1396286720, issued on Mar 18, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Nathan Lim located?
The NPPES record lists a practice address at 11480 Brookshire Ave Ste 204, Downey, CA, 90241. Phone: (562) 904-4466. Providers update this record themselves, so call before visiting.
How can I verify Nathan Lim's license?
NPPES lists California license number A157848, 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 Nathan Lim prescribe under Medicare Part D?
In 2024, Nathan Lim had 1,911 Medicare Part D claims for 345 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Nathan Lim's MIPS final score?
The 2023 MIPS final score is 76.3 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.