Charles Guillaume, PMHNP
NPI 1114322419 · Psychiatric/Mental Health Nurse Practitioner · Snellville, GA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charles Guillaume, PMHNP is a Psychiatric/Mental Health Nurse Practitioner provider in Snellville, GA (NPI 1114322419).
Provider details
- NPI number
- 1114322419
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PMHNP
- Sex
- Male
- Sole proprietor
- Yes
- License
- RN180218 (GA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Nursing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
11 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
438 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Psychotherapy With Evaluation and Management Visit, 30 Minutes90833 | 223 | $57 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 215 | $104 |
Typical Medicare-allowed amounts for these services range $57–$104 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 42 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Quetiapine Fumarate | 167 | 30 |
| Trazodone Hcl | 151 | 41 |
| Bupropion Hclbrand: Bupropion Xl | 150 | 34 |
| Venlafaxine Hclbrand: Venlafaxine Hcl Er | 106 | 18 |
| Duloxetine Hcl | 106 | 21 |
| Buspirone Hcl | 104 | 29 |
| Zolpidem Tartrate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-10-29
- Last updated
- 2025-10-23
- Certified
- 2025-10-23
Frequently asked questions
- What is Charles Guillaume's NPI number?
- Charles Guillaume's National Provider Identifier (NPI) is 1114322419, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Guillaume's specialty?
- Charles Guillaume is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Charles Guillaume located?
- Charles Guillaume's practice location on file with NPPES is 3991 Highway 78 W Ste 203, Snellville, GA 30039-3929.
- What is Charles Guillaume's phone number?
- The practice phone number listed in the NPPES registry for Charles Guillaume is (770) 978-9393.
- Does Charles Guillaume accept Medicare?
- Charles Guillaume is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charles Guillaume's NPI active?
- Yes — Charles Guillaume's NPI (1114322419) is active in the NPPES registry as of the last update on 2025-10-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.