Doctor profile · Federal record
Dr. Michael Janssen, MD
Internal Medicine Physician (CMS: Internal Medicine) · Internal Medicine Physician · Internal Medicine Physician · Internal Medicine Physician · Seattle, WA
- NPI 1194804161
- Accepts Medicare
- 22 yrs in practice
- Licensed in 3 states
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
5350 Tallman Ave Nw, Suite 301
Seattle, WA 981075902
(206) 320-3335
fax (206) 320-8027 - Additional location
-
500 17Th Ave
Seattle, WA 981225711
(206) 320-2230
fax (206) 320-3462 - Mailing address
-
Po Box 25608
Salt Lake City, UT 841250608
Credentials & registration
- NPI registered
- November 2006 — 20 yrs on file
- Profile last updated
- October 7, 2020
- Year of graduation
- 2004 — 22 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State licenses (4)
- Washington #MD60344899 · New Hampshire #RT-1351 · Wyoming #TL1017 · New Hampshire #13498
- Medicaid
- WY #1194804161
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1194804161. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,169
Distinct HCPCS
10
Medicare allowed
$138,083
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 518 | 263 | $140 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 174 | 174 | $141 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 155 | 113 | $99 | |
83036 |
Hemoglobin a1c level | 64 | 39 | $10 | |
G0008 |
Administration of influenza virus vaccine | 58 | 57 | $34 | |
90694 |
Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage | 54 | 54 | $76 | |
90677 |
Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use | 38 | 38 | $281 | |
G0009 |
Administration of pneumococcal vaccine | 37 | 37 | $34 | |
G0438 |
Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit | 22 | 22 | $180 | |
93005 |
Routine electrocardiogram (ecg) using at least 12 leads with tracing | 19 | 18 | $8 |
In context: peer comparison
Among 174 peers in Seattle Internal Medicine Physician, average services per provider: 77. This provider delivers 15× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
2,720
Patients
794
Total drug cost
$133,859
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 639 | 190 | $7,352 |
| Amlodipine Besylate | Generic | 256 | 73 | $2,024 |
| Lisinopril | Generic | 238 | 63 | $2,106 |
| Losartan Potassium | Generic | 211 | 64 | $2,913 |
| Levothyroxine Sodium | Generic | 198 | 51 | $3,614 |
| Metoprolol Succinate | Generic | 167 | 44 | $3,187 |
| Omeprazole | Generic | 157 | 45 | $2,298 |
| Hydrochlorothiazide | Generic | 156 | 44 | $660 |
| Trazodone Hcl | Generic | 116 | 38 | $1,880 |
| Rosuvastatin Calcium | Generic | 111 | 33 | $2,937 |
Hospital affiliations
Frequently asked questions
What is Dr. Michael Janssen's medical specialty?
Dr. Michael Janssen practices Internal Medicine Physician in Seattle, WA.
Where does Dr. Michael Janssen practice?
Dr. Michael Janssen practices at 5350 Tallman Ave Nw, Seattle, WA 981075902. Office phone: 2063203335.
What is Dr. Michael Janssen's NPI?
Dr. Michael Janssen's National Provider Identifier (NPI) is 1194804161, issued by NPPES.
Does Dr. Michael Janssen accept Medicare assignment?
Yes. Dr. Michael Janssen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Michael Janssen commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (HCPCS G0439); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.