Doctor profile · Federal record
Dr. Zachary Gregg, M.D.
Colon & Rectal Surgery Physician (CMS: Colorectal Surgery (Proctology)) · Charlottesville, VA
- NPI 1285836312
- Accepts Medicare
- MIPS 93.2 / 100 · 2023
- 19 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
500 Martha Jefferson Dr Fl 5
Charlottesville, VA 22911
(434) 654-5260
fax (434) 654-5261 - Mailing address
-
Po Box 79777
Baltimore, MD 212790777
Credentials & registration
- NPI registered
- June 2007 — 19 yrs on file
- Profile last updated
- July 3, 2018
- Year of graduation
- 2007 — 19 yrs since
- Specialty taxonomy
- 208C00000X — NUCC code
- State license (1)
- Virginia #0101258691
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1285836312. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
416
Distinct HCPCS
10
Medicare allowed
$46,475
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 94 | 73 | $90 | |
99231 |
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 67 | 38 | $49 | |
46600 |
Diagnostic exam of anus using an endoscope | 47 | 41 | $121 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 35 | 32 | $125 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 30 | 30 | $111 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 29 | 28 | $129 | |
99212 |
Established patient office or other outpatient visit, 10-19 minutes | 27 | 23 | $56 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 23 | 23 | $166 | |
46221 |
Removal of external hemorrhoids by rubber banding | 20 | 16 | $275 | |
99221 |
Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes | 16 | 15 | $82 |
In context: peer comparison
Among 1 peers in Charlottesville Colon & Rectal Surgery Physician, average services per provider: 34. This provider delivers 12× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
91
Patients
67
Total drug cost
$356
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Oxycodone Hcl | Generic | 31 | 23 | $65 |
| Metronidazole | Generic | 26 | 22 | $99 |
| Neomycin Sulfate | Generic | 23 | 22 | $77 |
| Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) | Brand | 11 | 0 | $115 |
Frequently asked questions
What is Dr. Zachary Gregg's medical specialty?
Dr. Zachary Gregg practices Colon & Rectal Surgery Physician in Charlottesville, VA.
Where does Dr. Zachary Gregg practice?
Dr. Zachary Gregg practices at 500 Martha Jefferson Dr Fl 5, Charlottesville, VA 22911. Office phone: 4346545260.
What is Dr. Zachary Gregg's NPI?
Dr. Zachary Gregg's National Provider Identifier (NPI) is 1285836312, issued by NPPES.
Does Dr. Zachary Gregg accept Medicare assignment?
Yes. Dr. Zachary Gregg accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Zachary Gregg commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Subsequent hospital care with straightforward or low level of medical decision making (HCPCS 99231); Diagnostic exam of anus using an endoscope (HCPCS 46600). Source: CMS Medicare Physician & Other Practitioners file.