Doctor profile · Federal record
Dr. Mariko Johnson, M.D.
Endocrinology, Diabetes & Metabolism Physician (CMS: Endocrinology) · Internal Medicine Physician · Honolulu, HI
- NPI 1629279617
- Accepts Medicare
- 21 yrs in practice
- Licensed in 2 states
- Female
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
1301 Punchbowl St
Honolulu, HI 968132499
(808) 691-1000
Credentials & registration
- NPI registered
- May 2007 — 19 yrs on file
- Profile last updated
- August 21, 2021
- Year of graduation
- 2005 — 21 yrs since
- Specialty taxonomy
- 207RE0101X — NUCC code
- State licenses (2)
- Hawaii #MD-16098 · Missouri #2005016358
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1629279617. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
272
Distinct HCPCS
4
Medicare allowed
$27,700
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 146 | 88 | $126 | |
96372 |
Injection of drug or substance under skin or into muscle | 68 | 14 | $15 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 36 | 36 | $173 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 22 | 19 | $91 |
In context: peer comparison
Among 8 peers in Honolulu Endocrinology, Diabetes & Metabolism Physician, average services per provider: 127. This provider delivers 2.1× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
327
Patients
81
Total drug cost
$119,314
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Levothyroxine Sodium | Generic | 174 | 53 | $2,958 |
| Synthroid (Levothyroxine Sodium) | Brand | 38 | 14 | $3,970 |
| Prolia (Denosumab) | Brand | 23 | 14 | $36,397 |
| Alendronate Sodium | Generic | 22 | 0 | $255 |
| Testosterone Cypionate | Generic | 22 | 0 | $1,498 |
| Forteo (Teriparatide) | Brand | 18 | 0 | $73,617 |
| Prednisone | Generic | 16 | 0 | $170 |
| Risedronate Sodium | Generic | 14 | 0 | $449 |
Hospital affiliations
Frequently asked questions
What is Dr. Mariko Johnson's medical specialty?
Dr. Mariko Johnson practices Endocrinology, Diabetes & Metabolism Physician in Honolulu, HI.
Where does Dr. Mariko Johnson practice?
Dr. Mariko Johnson practices at 1301 Punchbowl St, Honolulu, HI 968132499. Office phone: 8086911000.
What is Dr. Mariko Johnson's NPI?
Dr. Mariko Johnson's National Provider Identifier (NPI) is 1629279617, issued by NPPES.
Does Dr. Mariko Johnson accept Medicare assignment?
Yes. Dr. Mariko Johnson accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mariko Johnson commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Injection of drug or substance under skin or into muscle (HCPCS 96372); New patient office or other outpatient visit (HCPCS 99204). Source: CMS Medicare Physician & Other Practitioners file.