Doctor profile · Federal record
Dr. Margaret Larson, ARNP
Family Nurse Practitioner (CMS: Nurse Practitioner) · Registered Nurse · Renton, WA
- NPI 1699788539
- Accepts Medicare
- 22 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
64 Rainier Ave S
Renton, WA 980572047
(888) 405-6396
fax (415) 252-7176 - Additional location
-
202 N Division St Ste 301
Auburn, WA 980014939
(253) 876-7997
fax (253) 876-8015
Credentials & registration
- NPI registered
- August 2006 — 20 yrs on file
- Profile last updated
- August 18, 2025
- Year of graduation
- 2004 — 22 yrs since
- Specialty taxonomy
- 363LF0000X — NUCC code
- State license (1)
- Washington #AP30007129
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1699788539. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
449
Distinct HCPCS
10
Medicare allowed
$23,289
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 55 | 42 | $111 | |
36415 |
Insertion of needle into vein for collection of blood sample | 48 | 39 | $8 | |
99454 |
Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days | 47 | 17 | $51 | |
99457 |
Management using the results of remote vital sign monitoring per calendar month, first 20 minutes | 47 | 17 | $46 | |
99490 |
Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month | 35 | 26 | $56 | |
99458 |
Management using the results of remote vital sign monitoring per calendar month, each additional 20 minutes | 32 | 12 | $37 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 27 | 20 | $80 | |
0358T |
Whole body composition tissue and fluid measurements with interpretation and report | 25 | 16 | $9 | |
81002 |
Urinalysis, manual test | 22 | 22 | $3 | |
99212 |
Established patient office or other outpatient visit, 10-19 minutes | 17 | 13 | $52 |
In context: peer comparison
Among 12 peers in this city , average services per provider: 67. This provider delivers 6.7× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
395
Patients
112
Total drug cost
$8,764
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Levothyroxine Sodium | Generic | 50 | 24 | $942 |
| Amlodipine Besylate | Generic | 42 | 18 | $265 |
| Atorvastatin Calcium | Generic | 38 | 14 | $813 |
| Rosuvastatin Calcium | Generic | 38 | 17 | $781 |
| Metformin Hcl | Generic | 34 | 13 | $457 |
| Metoprolol Succinate | Generic | 34 | 13 | $890 |
| Lisinopril | Generic | 30 | 0 | $260 |
| Losartan Potassium | Generic | 27 | 13 | $496 |
| Pantoprazole Sodium | Generic | 17 | 0 | $423 |
| Tamsulosin Hcl | Generic | 17 | 0 | $299 |
Frequently asked questions
What is Dr. Margaret Larson's medical specialty?
Dr. Margaret Larson practices Family Nurse Practitioner in Renton, WA.
Where does Dr. Margaret Larson practice?
Dr. Margaret Larson practices at 64 Rainier Ave S, Renton, WA 980572047. Office phone: 8884056396.
What is Dr. Margaret Larson's NPI?
Dr. Margaret Larson's National Provider Identifier (NPI) is 1699788539, issued by NPPES.
Does Dr. Margaret Larson accept Medicare assignment?
Yes. Dr. Margaret Larson accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Margaret Larson commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Insertion of needle into vein for collection of blood sample (HCPCS 36415); Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days (HCPCS 99454). Source: CMS Medicare Physician & Other Practitioners file.