Doctor profile · Federal record

Dr. Mathias Stroemel, DO

Nephrology Physician (CMS: Nephrology) · Nephrology Physician · Walla Walla, WA

  • NPI 1265446660
  • Accepts Medicare
  • 38 yrs in practice
  • Licensed in 2 states
  • Male
  • Group practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
301 W Poplar, Suite 100
Walla Walla, WA 99362
(509) 522-5824
fax (509) 522-5738
Additional location
311 E Spruce St
Garden City, KS 678465614
(620) 271-3190
fax (620) 271-3117
Mailing address
Po Box 2292
Walla Walla, WA 99362

Credentials & registration

NPPES · NUCC
NPI registered
July 2006 — 20 yrs on file
Profile last updated
January 9, 2024
Year of graduation
1988 — 38 yrs since
Specialty taxonomy
207RN0300X — NUCC code
State licenses (2)
Washington #OP1416 · Kansas #05-48772
Medicaid
WA #8146383

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1265446660. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
872
Distinct HCPCS
10
Medicare allowed
$76,994
HCPCS Description Services Patients Avg allowed
90970 Dialysis services, per day, less than full month service (20 years or older) 405 14 $9
99214 Established patient office or other outpatient visit, 30-39 minutes 137 81 $125
90960 Dialysis services, 4 or more physician visits per month (20 years or older) 65 14 $347
99213 Established patient office or other outpatient visit, 20-29 minutes 61 46 $90
90961 Dialysis services, 2-3 physician visits per month (20 years or older) 41 17 $288
90935 Hemodialysis procedure with physician evaluation 36 15 $69
99204 New patient office or other outpatient visit, 45-59 minutes 33 33 $164
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 20 19 $164
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 20 11 $71
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 17 12 $111

In context: peer comparison

Among 2 peers in this city , average services per provider: 186. This provider delivers 4.7× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$228
Transactions
2
Manufacturers
2
Payer (manufacturer) Industry Txns Amount
Edwards Lifesciences Corporation 1 $164.94
NXSTAGE MEDICAL, INC. 1 $62.84

By nature of payment

Food and Beverage
$228

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
565
Patients
108
Total drug cost
$61,202
Drug Type Claims Patients Total cost
Furosemide Generic 94 28 $1,000
Lisinopril Generic 69 23 $1,183
Calcitriol Generic 66 18 $1,796
Amlodipine Besylate Generic 46 15 $566
Atorvastatin Calcium Generic 42 12 $568
Clinolipid (Fat Emulsion/Olive/Soy/Phospho) Brand 34 0 $9,275
Allopurinol Generic 29 0 $246
Carvedilol Generic 29 0 $594
Losartan Potassium Generic 26 12 $377
Potassium Chloride Generic 26 0 $986

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Mathias Stroemel's medical specialty?
Dr. Mathias Stroemel practices Nephrology Physician in Walla Walla, WA.
Where does Dr. Mathias Stroemel practice?
Dr. Mathias Stroemel practices at 301 W Poplar, Walla Walla, WA 99362. Office phone: 5095225824.
What is Dr. Mathias Stroemel's NPI?
Dr. Mathias Stroemel's National Provider Identifier (NPI) is 1265446660, issued by NPPES.
Does Dr. Mathias Stroemel accept Medicare assignment?
Yes. Dr. Mathias Stroemel accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mathias Stroemel commonly perform?
Top Medicare-reported procedures in 2023: Dialysis services (HCPCS 90970); Established patient office or other outpatient visit (HCPCS 99214); Dialysis services, 4 or more physician visits per month (20 years or older) (HCPCS 90960). Source: CMS Medicare Physician & Other Practitioners file.