Doctor profile · Federal record
Dr. Hollis Underwood, M.D.
Internal Medicine Physician · Specialist · Phoenix, AZ
- NPI 1770640369
- 19 yrs on file
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
4420 E McDowell RD
Phoenix, AZ 850084504
(602) 858-4295 - Mailing address
-
102 Woodmont Blvd Ste 600
Nashville, TN 372055250
Credentials & registration
- NPI registered
- January 2007 — 19 yrs on file
- Profile last updated
- September 10, 2024
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Arizona #22415
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1770640369. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
664
Distinct HCPCS
5
Medicare allowed
$78,245
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 461 | 269 | $124 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 97 | 77 | $87 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 67 | 67 | $161 | |
G0008 |
Administration of influenza virus vaccine | 20 | 20 | $30 | |
90662 |
Influenza vaccine split virus, preservative free | 19 | 19 | $72 |
In context: peer comparison
Among 171 peers in Phoenix Internal Medicine Physician, average services per provider: 159. This provider delivers 4.2× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
5,161
Patients
1,734
Total drug cost
$389,477
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 748 | 232 | $5,809 |
| Amlodipine Besylate | Generic | 623 | 210 | $3,449 |
| Rosuvastatin Calcium | Generic | 542 | 219 | $12,176 |
| Levothyroxine Sodium | Generic | 449 | 138 | $4,122 |
| Pantoprazole Sodium | Generic | 406 | 146 | $4,061 |
| Bisoprolol-Hydrochlorothiazide (Bisoprolol/Hydrochlorothiazide) | Brand | 293 | 93 | $7,411 |
| Lisinopril | Generic | 284 | 84 | $1,066 |
| Losartan Potassium | Generic | 258 | 81 | $2,391 |
| Tramadol Hcl | Generic | 257 | 82 | $1,631 |
| Ozempic (Semaglutide) | Brand | 247 | 72 | $327,612 |
Frequently asked questions
What is Dr. Hollis Underwood's medical specialty?
Dr. Hollis Underwood practices Internal Medicine Physician in Phoenix, AZ.
Where does Dr. Hollis Underwood practice?
Dr. Hollis Underwood practices at 4420 E McDowell RD, Phoenix, AZ 850084504. Office phone: 6028584295.
What is Dr. Hollis Underwood's NPI?
Dr. Hollis Underwood's National Provider Identifier (NPI) is 1770640369, issued by NPPES.
What procedures does Dr. Hollis Underwood commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213); New patient office or other outpatient visit (HCPCS 99204). Source: CMS Medicare Physician & Other Practitioners file.