Doctor profile · Federal record
Dr. Gretchen Twork, M.D.
Internal Medicine Physician (CMS: Internal Medicine) · Lebanon, NH
- NPI 1588759872
- Accepts Medicare
- MIPS 86.8 / 100 · 2023
- 24 yrs in practice
- Female
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
1 Medical Center Dr
Lebanon, NH 037561000
(603) 650-8380
fax (603) 640-1228 - Mailing address
-
One Medical Center Drive, Department of Hospital Medicine
Lebanon, NH 037560001
Credentials & registration
- NPI registered
- October 2006 — 20 yrs on file
- Profile last updated
- December 16, 2025
- Year of graduation
- 2002 — 24 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- New Hampshire #12768
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1588759872. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
402
Distinct HCPCS
5
Medicare allowed
$46,511
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 218 | 86 | $120 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 104 | 52 | $80 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 44 | 43 | $175 | |
99239 |
Hospital discharge day management, more than 30 minutes | 23 | 23 | $116 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 13 | 12 | $131 |
In context: peer comparison
Among 40 peers in this city , average services per provider: 85. This provider delivers 4.7× the peer median.Frequently asked questions
What is Dr. Gretchen Twork's medical specialty?
Dr. Gretchen Twork practices Internal Medicine Physician in Lebanon, NH.
Where does Dr. Gretchen Twork practice?
Dr. Gretchen Twork practices at 1 Medical Center Dr, Lebanon, NH 037561000. Office phone: 6036508380.
What is Dr. Gretchen Twork's NPI?
Dr. Gretchen Twork's National Provider Identifier (NPI) is 1588759872, issued by NPPES.
Does Dr. Gretchen Twork accept Medicare assignment?
Yes. Dr. Gretchen Twork accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Gretchen Twork 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); Initial hospital care with moderate level of medical decision making (HCPCS 99223). Source: CMS Medicare Physician & Other Practitioners file.