Doctor profile · Federal record
Dr. Johan Guillaume
Hospitalist Physician (CMS: Hospitalist) · Internal Medicine Physician · Infectious Disease Physician · Student in an Organized Health Care Education/Training Program · New York, NY
- NPI 1457738593
- Accepts Medicare
- MIPS 84.5 / 100 · 2023
- 11 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1305 York Ave
New York, NY 100215663
(646) 962-8747 - Mailing address
-
166 Bryant St Apt F
Palo Alto, CA 943011105
Credentials & registration
- NPI registered
- April 2015 — 11 yrs on file
- Profile last updated
- November 4, 2022
- Year of graduation
- 2015 — 11 yrs since
- Specialty taxonomy
- 208M00000X — NUCC code
- State license (1)
- New York #315641
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1457738593. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
443
Distinct HCPCS
5
Medicare allowed
$48,157
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 261 | 104 | $91 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 60 | 38 | $136 | |
99238 |
Hospital discharge day management, 30 minutes or less | 59 | 59 | $91 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 33 | 33 | $150 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 30 | 30 | $199 |
In context: peer comparison
Among 190 peers in this city , average services per provider: 97. This provider delivers 4.6× the peer median.Hospital affiliations
Frequently asked questions
What is Dr. Johan Guillaume's medical specialty?
Dr. Johan Guillaume practices Hospitalist Physician in New York, NY.
Where does Dr. Johan Guillaume practice?
Dr. Johan Guillaume practices at 1305 York Ave, New York, NY 100215663. Office phone: 6469628747.
What is Dr. Johan Guillaume's NPI?
Dr. Johan Guillaume's National Provider Identifier (NPI) is 1457738593, issued by NPPES.
Does Dr. Johan Guillaume accept Medicare assignment?
Yes. Dr. Johan Guillaume accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Johan Guillaume commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Hospital discharge day management (HCPCS 99238). Source: CMS Medicare Physician & Other Practitioners file.