Doctor profile · Federal record

Dr. Ruth Diaz de Leon, NP

Nurse Practitioner · Madison, WI

  • NPI 1730157116
  • MIPS 77.4 / 100 · 2023
  • 20 yrs on file
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
25 Jaarsma CT
Madison, WI 537161886
(608) 263-5010

Credentials & registration

NPPES · NUCC
NPI registered
March 2006 — 20 yrs on file
Profile last updated
August 22, 2024
Specialty taxonomy
363L00000X — NUCC code
State license (1)
Wisconsin #876

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1730157116. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
513
Distinct HCPCS
3
Medicare allowed
$32,810
HCPCS Description Services Patients Avg allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 427 103 $63
99231 Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 48 23 $39
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 38 36 $103

In context: peer comparison

Among 123 peers in this city , average services per provider: 69. This provider delivers 7.4× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
110
Patients
82
Total drug cost
$53,004
Drug Type Claims Patients Total cost
Lantus Solostar (Insulin Glargine,hum.Rec.Anlog) Brand 28 21 $12,627
Nano 2nd Gen Pen Needle (Pen Needle, Diabetic) Brand 26 21 $2,076
Novolog Flexpen (Insulin Aspart) Brand 26 17 $18,499
Ultra-Fine Mini Pen Needle (Pen Needle, Diabetic) Brand 16 11 $1,589
Humalog Kwikpen U-100 (Insulin Lispro) Brand 14 12 $18,213

Frequently asked questions

Auto-generated from federal data
What is Dr. Ruth Diaz de Leon's medical specialty?
Dr. Ruth Diaz de Leon practices Nurse Practitioner in Madison, WI.
Where does Dr. Ruth Diaz de Leon practice?
Dr. Ruth Diaz de Leon practices at 25 Jaarsma CT, Madison, WI 537161886. Office phone: 6082635010.
What is Dr. Ruth Diaz de Leon's NPI?
Dr. Ruth Diaz de Leon's National Provider Identifier (NPI) is 1730157116, issued by NPPES.
What procedures does Dr. Ruth Diaz de Leon commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Subsequent hospital care with straightforward or low level of medical decision making (HCPCS 99231); Initial hospital care with straightforward or low-level medical decision making (HCPCS 99222). Source: CMS Medicare Physician & Other Practitioners file.