Doctor profile · Federal record
Dr. Guillermo Marquez, M.D.
Surgery Physician (CMS: General Surgery) · Mission, TX
- NPI 1861454563
- Accepts Medicare
- 38 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
910 S Bryan RD, Ste 202
Mission, TX 785726659
(956) 682-6126
fax (956) 580-0464
Credentials & registration
- NPI registered
- April 2006 — 20 yrs on file
- Profile last updated
- March 5, 2019
- Year of graduation
- 1988 — 38 yrs since
- Specialty taxonomy
- 208600000X — NUCC code
- State license (1)
- Texas #K1544
- Medicaid
- TX #030586401
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1861454563. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
121
Distinct HCPCS
4
Medicare allowed
$12,867
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 48 | 37 | $87 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 38 | 31 | $121 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 21 | 21 | $125 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 14 | 14 | $107 |
In context: peer comparison
Among 1 peers in Mission Surgery Physician, average services per provider: 30. This provider delivers 4.0× the peer median.Open Payments
Industry payments received
All-time total
$2,692
Transactions
2
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Smith+Nephew, INC. | 2 | $2,692.38 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
13
Patients
13
Total drug cost
$105
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Acetaminophen-Codeine (Acetaminophen With Codeine) | Brand | 13 | 13 | $105 |
Hospital affiliations
Frequently asked questions
What is Dr. Guillermo Marquez's medical specialty?
Dr. Guillermo Marquez practices Surgery Physician in Mission, TX.
Where does Dr. Guillermo Marquez practice?
Dr. Guillermo Marquez practices at 910 S Bryan RD, Mission, TX 785726659. Office phone: 9566826126.
What is Dr. Guillermo Marquez's NPI?
Dr. Guillermo Marquez's National Provider Identifier (NPI) is 1861454563, issued by NPPES.
Does Dr. Guillermo Marquez accept Medicare assignment?
Yes. Dr. Guillermo Marquez accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Guillermo Marquez commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214); Initial hospital care with straightforward or low-level medical decision making (HCPCS 99222). Source: CMS Medicare Physician & Other Practitioners file.