Doctor profile · Federal record

Dr. Neil Louwrens, M.D.

Internal Medicine Physician (CMS: Internal Medicine) · Internal Medicine Physician · Red Bluff, CA

  • NPI 1174621320
  • Accepts Medicare
  • 33 yrs in practice
  • Licensed in 2 states
  • Male
  • Solo practice
  • No sanctions

Practice & contact

Operates at 3 locations .

NPPES Updated May 11, 2026
Primary practice
2440 Sister Mary Columba Dr Ste 300
Red Bluff, CA 960804356
(888) 633-1441
fax (888) 633-1441
Additional location
1755 East St Ste M4
Redding, CA 960011106
(855) 788-3627
fax (855) 788-3627
Additional location
1950 Rosaline Ave Ste B
Redding, CA 960012543
(530) 245-4801
fax (530) 245-4809
Mailing address
13422 Tierra Oaks Dr
Redding, CA 960038011

Credentials & registration

NPPES · NUCC
NPI registered
September 2006 — 20 yrs on file
Profile last updated
September 18, 2023
Year of graduation
1993 — 33 yrs since
Specialty taxonomy
207R00000X — NUCC code
State licenses (2)
California #C52662 · Wyoming #6630A

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1174621320. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
3,166
Distinct HCPCS
9
Medicare allowed
$120,813
HCPCS Description Services Patients Avg allowed
11045 Removal of skin and tissue, each additional 20.0 sq cm or less 1,171 36 $25
97598 Removal of tissue from wound, each additional 20.0 sq cm 845 18 $24
11042 Removal of skin and tissue, 20.0 sq cm or less 582 112 $59
97597 Removal of tissue from wound, 20.0 sq cm or less 223 70 $35
99213 Established patient office or other outpatient visit, 20-29 minutes 105 53 $66
99212 Established patient office or other outpatient visit, 10-19 minutes 100 74 $35
11043 Removal of muscle and/or tissue, 20.0 sq cm or less 71 14 $152
99204 New patient office or other outpatient visit, 45-59 minutes 42 42 $133
99214 Established patient office or other outpatient visit, 30-39 minutes 27 25 $96

In context: peer comparison

Among 4 peers in this city , average services per provider: 193. This provider delivers 16× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$461
Transactions
18
Manufacturers
6
Payer (manufacturer) Industry Txns Amount
AstraZeneca Pharmaceuticals LP 2 $165.54
Smith+Nephew, Inc. 11 $143.09
Organogenesis Inc. 1 $61.48
BIOTISSUE HOLDINGS INC. 2 $49.80
Novo Nordisk Inc 1 $21.60
PFIZER INC. 1 $19.32

By nature of payment

Food and Beverage
$461

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
199
Patients
70
Total drug cost
$25,351
Drug Type Claims Patients Total cost
Doxycycline Monohydrate Generic 82 48 $1,864
Betamethasone Dipropionate Generic 16 0 $518
Fluconazole Generic 16 0 $180
Prednisone Generic 15 0 $83
Ciprofloxacin Hcl Generic 13 0 $76
Amlodipine Besylate Generic 12 0 $78
Sulfamethoxazole-Trimethoprim (Sulfamethoxazole/Trimethoprim) Brand 12 11 $69
Clindamycin Hcl Generic 11 0 $281
Lisinopril Generic 11 0 $87
Santyl (Collagenase Clostridium Hist.) Brand 11 11 $22,115

Frequently asked questions

Auto-generated from federal data
What is Dr. Neil Louwrens's medical specialty?
Dr. Neil Louwrens practices Internal Medicine Physician in Red Bluff, CA.
Where does Dr. Neil Louwrens practice?
Dr. Neil Louwrens practices at 2440 Sister Mary Columba Dr Ste 300, Red Bluff, CA 960804356. Office phone: 8886331441.
What is Dr. Neil Louwrens's NPI?
Dr. Neil Louwrens's National Provider Identifier (NPI) is 1174621320, issued by NPPES.
Does Dr. Neil Louwrens accept Medicare assignment?
Yes. Dr. Neil Louwrens accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Neil Louwrens commonly perform?
Top Medicare-reported procedures in 2023: Removal of skin and tissue, each additional 20.0 sq cm or less (HCPCS 11045); Removal of tissue from wound, each additional 20.0 sq cm (HCPCS 97598); Removal of skin and tissue, 20.0 sq cm or less (HCPCS 11042). Source: CMS Medicare Physician & Other Practitioners file.