Doctor profile · Federal record
Dr. Penny Williams, MD
Critical Care Medicine (Internal Medicine) Physician (CMS: Internal Medicine) · Critical Care Medicine (Internal Medicine) Physician · Critical Care Medicine (Internal Medicine) Physician · Critical Care Medicine (Internal Medicine) Physician · Critical Care Medicine (Internal Medicine) Physician · Pulmonary Disease Physician · Pulmonary Disease Physician · Phoenix, AZ
- NPI 1588649453
- Accepts Medicare
- 36 yrs in practice
- Licensed in 5 states
- Female
- Group practice
- No sanctions
Practice & contact
Operates at 4 locations .
- Primary practice
-
3330 N 2Nd St Ste 300
Phoenix, AZ 850122369
(602) 261-7830
fax (602) 261-7835 - Additional location
-
800 W Meeting St
Lancaster, SC 297202202
(843) 792-1414 - Additional location
-
2400 S Avenue A
Yuma, AZ 853647127
(928) 344-2000 - Additional location
-
400 N State of Franklin RD Rm 2746
Johnson City, TN 376046035
(423) 431-6111
Show 1 more location
Credentials & registration
- NPI registered
- December 2005 — 21 yrs on file
- Profile last updated
- January 28, 2025
- Year of graduation
- 1990 — 36 yrs since
- Specialty taxonomy
- 207RC0200X — NUCC code
- State licenses (5)
- Tennessee #66867 · Arizona #26291 · South Carolina #18810 · Wisconsin #910 · Oregon #MD202003
- Medicaid
- AZ #420935
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1588649453. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
115
Distinct HCPCS
3
Medicare allowed
$17,874
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99291 |
Critical care, first 30-74 minutes | 59 | 41 | $205 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 40 | 23 | $114 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 16 | 15 | $76 |
In context: peer comparison
Among 11 peers in this city , average services per provider: 120. This provider delivers 1.0× the peer median.Hospital affiliations
Frequently asked questions
What is Dr. Penny Williams's medical specialty?
Dr. Penny Williams practices Critical Care Medicine (Internal Medicine) Physician in Phoenix, AZ.
Where does Dr. Penny Williams practice?
Dr. Penny Williams practices at 3330 N 2Nd St Ste 300, Phoenix, AZ 850122369. Office phone: 6022617830.
What is Dr. Penny Williams's NPI?
Dr. Penny Williams's National Provider Identifier (NPI) is 1588649453, issued by NPPES.
Does Dr. Penny Williams accept Medicare assignment?
Yes. Dr. Penny Williams accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Penny Williams commonly perform?
Top Medicare-reported procedures in 2023: Critical care (HCPCS 99291); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232). Source: CMS Medicare Physician & Other Practitioners file.