Doctor profile · Federal record
Dr. Mark Williams, Pnhnp-BC
Psychiatric/Mental Health Nurse Practitioner (CMS: Nurse Practitioner) · Reno, NV
- NPI 1639847049
- Accepts Medicare
- MIPS 52.5 / 100 · 2023
- 6 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
1155 Mill St
Reno, NV 895021576
(775) 982-2860 - Additional location
-
975 Kirman Ave
Reno, NV 895020993
(775) 636-2699 - Mailing address
-
1155 Mill St # Msm14
Reno, NV 895021576
Credentials & registration
- NPI registered
- August 2021 — 5 yrs on file
- Profile last updated
- July 9, 2024
- Year of graduation
- 2020 — 6 yrs since
- Specialty taxonomy
- 363LP0808X — NUCC code
- State license (1)
- Nevada #836585
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1639847049. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
134
Distinct HCPCS
2
Medicare allowed
$13,978
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 120 | 31 | $99 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 14 | 13 | $146 |
In context: peer comparison
Among 10 peers in this city , average services per provider: 262. This provider delivers 0.5× the peer median.Hospital affiliations
Frequently asked questions
What is Dr. Mark Williams's medical specialty?
Dr. Mark Williams practices Psychiatric/Mental Health Nurse Practitioner in Reno, NV.
Where does Dr. Mark Williams practice?
Dr. Mark Williams practices at 1155 Mill St, Reno, NV 895021576. Office phone: 7759822860.
What is Dr. Mark Williams's NPI?
Dr. Mark Williams's National Provider Identifier (NPI) is 1639847049, issued by NPPES.
Does Dr. Mark Williams accept Medicare assignment?
Yes. Dr. Mark Williams accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mark Williams commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Initial hospital care with moderate level of medical decision making (HCPCS 99223). Source: CMS Medicare Physician & Other Practitioners file.