Doctor profile · Federal record
Dr. Jillian Grigoryan-Koster, M.D.
Hospitalist Physician (CMS: Hospitalist) · Family Medicine Physician · Concord, NH
- NPI 1225419385
- Accepts Medicare
- MIPS 86.1 / 100 · 2023
- 11 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
250 Pleasant St
Concord, NH 03301
(603) 227-7000
fax (603) 227-7191
Credentials & registration
- NPI registered
- June 2015 — 11 yrs on file
- Profile last updated
- September 12, 2018
- Year of graduation
- 2015 — 11 yrs since
- Specialty taxonomy
- 208M00000X — NUCC code
- State license (1)
- New Hampshire #18862
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1225419385. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
813
Distinct HCPCS
7
Medicare allowed
$88,567
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 430 | 173 | $119 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 138 | 90 | $78 | |
99239 |
Hospital discharge day management, more than 30 minutes | 90 | 90 | $115 | |
99231 |
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 67 | 34 | $49 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 55 | 55 | $173 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 17 | 17 | $130 | |
99238 |
Hospital discharge day management, 30 minutes or less | 16 | 16 | $81 |
In context: peer comparison
Among 11 peers in Concord Hospitalist Physician, average services per provider: 120. This provider delivers 6.8× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
101
Patients
24
Total drug cost
$1,407
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Warfarin Sodium | Generic | 15 | 0 | $122 |
| Atorvastatin Calcium | Generic | 13 | 0 | $107 |
| Cefdinir | Generic | 13 | 13 | $127 |
| Finasteride | Generic | 13 | 0 | $224 |
| Omeprazole | Generic | 13 | 0 | $130 |
| Tamsulosin Hcl | Generic | 12 | 0 | $546 |
| Levothyroxine Sodium | Generic | 11 | 0 | $124 |
| Prednisone | Generic | 11 | 11 | $27 |
Hospital affiliations
Frequently asked questions
What is Dr. Jillian Grigoryan-Koster's medical specialty?
Dr. Jillian Grigoryan-Koster practices Hospitalist Physician in Concord, NH.
Where does Dr. Jillian Grigoryan-Koster practice?
Dr. Jillian Grigoryan-Koster practices at 250 Pleasant St, Concord, NH 03301. Office phone: 6032277000.
What is Dr. Jillian Grigoryan-Koster's NPI?
Dr. Jillian Grigoryan-Koster's National Provider Identifier (NPI) is 1225419385, issued by NPPES.
Does Dr. Jillian Grigoryan-Koster accept Medicare assignment?
Yes. Dr. Jillian Grigoryan-Koster accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Jillian Grigoryan-Koster commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Hospital discharge day management (HCPCS 99239). Source: CMS Medicare Physician & Other Practitioners file.