Doctor profile · Federal record
Dr. Isaac Fonken, M.D.
Family Medicine Physician (CMS: Family Practice) · Family Medicine Physician · Tacoma, WA
- NPI 1538665542
- Accepts Medicare
- 8 yrs in practice
- Licensed in 2 states
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
1112 6Th Ave, 3-Tfm
Tacoma, WA 984054040
(253) 792-6680
fax (253) 403-2915
Credentials & registration
- NPI registered
- March 2018 — 8 yrs on file
- Profile last updated
- September 4, 2025
- Year of graduation
- 2018 — 8 yrs since
- Specialty taxonomy
- 207Q00000X — NUCC code
- State licenses (2)
- Washington #MD.MD.61669853 · Montana #101180
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1538665542. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
52
Distinct HCPCS
2
Medicare allowed
$4,859
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 36 | 24 | $78 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 16 | 14 | $128 |
In context: peer comparison
Among 49 peers in this city , average services per provider: 92. This provider delivers 0.6× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
660
Patients
26
Total drug cost
$52,012
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Jardiance (Empagliflozin) | Brand | 78 | 12 | $43,057 |
| Losartan Potassium | Generic | 76 | 14 | $730 |
| Levothyroxine Sodium | Generic | 57 | 0 | $452 |
| Atorvastatin Calcium | Generic | 56 | 0 | $664 |
| Potassium Chloride | Generic | 56 | 0 | $1,350 |
| Gabapentin | Generic | 48 | 0 | $571 |
| Sertraline Hcl | Generic | 45 | 0 | $656 |
| Allopurinol | Generic | 34 | 0 | $343 |
| Amlodipine Besylate | Generic | 31 | 0 | $257 |
| Lisinopril | Generic | 31 | 0 | $322 |
Frequently asked questions
What is Dr. Isaac Fonken's medical specialty?
Dr. Isaac Fonken practices Family Medicine Physician in Tacoma, WA.
Where does Dr. Isaac Fonken practice?
Dr. Isaac Fonken practices at 1112 6Th Ave, Tacoma, WA 984054040. Office phone: 2537926680.
What is Dr. Isaac Fonken's NPI?
Dr. Isaac Fonken's National Provider Identifier (NPI) is 1538665542, issued by NPPES.
Does Dr. Isaac Fonken accept Medicare assignment?
Yes. Dr. Isaac Fonken accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Isaac Fonken commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Initial hospital care with straightforward or low-level medical decision making (HCPCS 99222). Source: CMS Medicare Physician & Other Practitioners file.