Neil Andrew Louwrens, M.D.
Internal Medicine Physician · Red Bluff, CA
Neil Andrew Louwrens, M.D. is an internal medicine physician with a practice address in Red Bluff, California, and NPI 1174621320, issued on Sep 20, 2006. Check the license (California C52662, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Neil Andrew Louwrens
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- C52662 CA
6630A WY
Self-reported in NPPES; status is on the state search - Practice location
- 2440 Sister Mary Columba Dr Ste 300, Red Bluff, CA 96080
- Phone
- (888) 633-1441
- Enumerated
- Sep 20, 2006
- Record last updated
- Sep 18, 2023
- Fax
- (888) 633-1441
- Medicare enrollment
- Enrolled (PECOS I20150210002358); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Verify Neil Andrew Louwrens in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C52662Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% fewer Medicare Part D claims than the average internal medicine physician in 2024
437 Medicare Part D claims for 130 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.
Most prescribed
- Doxycycline Monohydrate91 claims
- Sulfamethoxazole-Trimethoprim28 claims
- Fluconazole24 claims
- Betamethasone Dipropionate17 claims
- Clindamycin Hcl15 claims
- Prednisone15 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: $460.83
18 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. 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
- David B. HammerTempleton, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Neil Andrew Louwrens among 17,696 internal medicine physician records in California
Neil Andrew Louwrens, M.D. 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 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1993 · median 2004 among the 11,065 with a school on file
- Record last updated2023 · 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).
13 internal medicine physician records list a practice address in Red Bluff
They are 13 of the 704 NPPES records with a practice address in Red Bluff, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Red Bluff → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Saeid Ahmadpour, MDRed Bluff, CA 960801295715340
- Giang BuiRed Bluff, CA 960801952663627
- Lisa CheungRed Bluff, CA 960801598804205
- David DahnkeRed Bluff, CA 960801053451625
- Jaimal Johal, MDRed Bluff, CA 960801487177796
- Faisal Kanbar-Agha, MDRed Bluff, CA 960801700388915
- Natasha Maqsood, MDRed Bluff, CA 960801518459858
- Andrew Pomazal, DORed Bluff, CA 960801972675023
Common questions
What is Neil Andrew Louwrens, M.D.'s NPI number?
Neil Andrew Louwrens, M.D.'s National Provider Identifier (NPI) is 1174621320, issued on Sep 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Neil Andrew Louwrens, M.D. located?
The NPPES record lists a practice address at 2440 Sister Mary Columba Dr Ste 300, Red Bluff, CA, 96080. Phone: (888) 633-1441. Providers update this record themselves, so call before visiting.
How can I verify Neil Andrew Louwrens, M.D.'s license?
NPPES lists California license number C52662, 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 Neil Andrew Louwrens, M.D. prescribe under Medicare Part D?
In 2024, Neil Andrew Louwrens, M.D. had 437 Medicare Part D claims for 130 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.