Doctor profile · Federal record
Dr. Mark Brennan, DO
Vascular Surgery Physician (CMS: Vascular Surgery) · Surgery Physician · Johnson City, NY
- NPI 1174523443
- Accepts Medicare
- MIPS 88.0 / 100 · 2023
- 32 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
30 Harrison St, Ste 455
Johnson City, NY 137902161
(607) 763-8100
fax (607) 763-8048 - Mailing address
-
346 Grand Ave, United Medical Associates, PC
Johnson City, NY 137902558
Credentials & registration
- NPI registered
- July 2005 — 21 yrs on file
- Profile last updated
- September 15, 2014
- Year of graduation
- 1994 — 32 yrs since
- Specialty taxonomy
- 2086S0129X — NUCC code
- State license (1)
- New York #217717
- Medicaid
- NY #02082319
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1174523443. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
174
Distinct HCPCS
6
Medicare allowed
$16,320
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
76937 |
Ultrasonic guidance for blood vessel access | 43 | 31 | $14 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 34 | 31 | $64 | |
36902 |
Insertion of needle and/or tube into hemodialysis circuit and balloon dilation of dialysis segment with review by radiologist | 28 | 18 | $228 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 28 | 28 | $80 | |
36558 |
Insertion of tunneled central venous tube for infusion (5 years or older) | 21 | 20 | $217 | |
77001 |
Fluoroscopic guidance for insertion or removal of central vein access device | 20 | 19 | $17 |
In context: peer comparison
Among 1 peers in this city , average services per provider: 29. This provider delivers 6.0× the peer median.Open Payments
Industry payments received
All-time total
$2,786
Transactions
32
Manufacturers
12
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Inari Medical, Inc. | 14 | $1,318.58 | |
| Medtronic, Inc. | 3 | $233.67 | |
| Baxter Healthcare | 3 | $175.61 | |
| Boston Scientific Corporation | 2 | $175.08 | |
| Shape Memory Medical Inc. | 2 | $152.80 | |
| Surgical Specialties Corporation (us), Inc. (dba Corza Medical) | 1 | $144.60 | |
| Janssen Pharmaceuticals, Inc | 1 | $132.51 | |
| W. L. Gore & Associates, Inc. | 2 | $125.20 | |
| Haemonetics Corporation | 1 | $113.65 | |
| ShockWave Medical, Inc | 1 | $110.29 | |
| Solventum Corporation | 1 | $86.21 | |
| Ethicon US, LLC | 1 | $17.39 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
33
Patients
0
Total drug cost
$13,992
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Xarelto (Rivaroxaban) | Brand | 20 | 0 | $13,925 |
| Clopidogrel (Clopidogrel Bisulfate) | Brand | 13 | 0 | $68 |
Hospital affiliations
Frequently asked questions
What is Dr. Mark Brennan's medical specialty?
Dr. Mark Brennan practices Vascular Surgery Physician in Johnson City, NY.
Where does Dr. Mark Brennan practice?
Dr. Mark Brennan practices at 30 Harrison St, Johnson City, NY 137902161. Office phone: 6077638100.
What is Dr. Mark Brennan's NPI?
Dr. Mark Brennan's National Provider Identifier (NPI) is 1174523443, issued by NPPES.
Does Dr. Mark Brennan accept Medicare assignment?
Yes. Dr. Mark Brennan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mark Brennan commonly perform?
Top Medicare-reported procedures in 2023: Ultrasonic guidance for blood vessel access (HCPCS 76937); Established patient office or other outpatient visit (HCPCS 99213); Insertion of needle and/or tube into hemodialysis circuit and balloon dilation of dialysis segment with review by radiologist (HCPCS 36902). Source: CMS Medicare Physician & Other Practitioners file.