Doctor profile · Federal record
Dr. Ann Gillenwater, M.D.
Otolaryngology Physician (CMS: Otolaryngology) · Houston, TX
- NPI 1548354350
- Accepts Medicare
- MIPS 79.4 / 100 · 2023
- 39 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1515 Holcombe Blvd
Houston, TX 770304009
(713) 792-6161 - Mailing address
-
Po Box 4439
Houston, TX 772104439
Credentials & registration
- NPI registered
- October 2006 — 20 yrs on file
- Profile last updated
- June 22, 2012
- Year of graduation
- 1987 — 39 yrs since
- Specialty taxonomy
- 207Y00000X — NUCC code
- State license (1)
- Texas #H5446
- Medicaid
- TX #41347801
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1548354350. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
223
Distinct HCPCS
5
Medicare allowed
$12,632
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99212 |
Established patient office or other outpatient visit, 10-19 minutes | 100 | 83 | $36 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 75 | 60 | $67 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 17 | 17 | $84 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 16 | 16 | $99 | |
31575 |
Diagnostic exam of voice box using a flexible endoscope | 15 | 12 | $67 |
In context: peer comparison
Among 58 peers in Houston Otolaryngology Physician, average services per provider: 149. This provider delivers 1.5× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
14
Patients
11
Total drug cost
$230
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 14 | 11 | $230 |
Frequently asked questions
What is Dr. Ann Gillenwater's medical specialty?
Dr. Ann Gillenwater practices Otolaryngology Physician in Houston, TX.
Where does Dr. Ann Gillenwater practice?
Dr. Ann Gillenwater practices at 1515 Holcombe Blvd, Houston, TX 770304009. Office phone: 7137926161.
What is Dr. Ann Gillenwater's NPI?
Dr. Ann Gillenwater's National Provider Identifier (NPI) is 1548354350, issued by NPPES.
Does Dr. Ann Gillenwater accept Medicare assignment?
Yes. Dr. Ann Gillenwater accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Ann Gillenwater commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99212); Established patient office or other outpatient visit (HCPCS 99213); New patient office or other outpatient visit (HCPCS 99203). Source: CMS Medicare Physician & Other Practitioners file.