Melissa Fischer, PMHNP-BC
NPI 1639509607 · Psychiatric/Mental Health Nurse Practitioner · Saint Charles, MO
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Melissa Fischer, PMHNP-BC is a Psychiatric/Mental Health Nurse Practitioner provider in Saint Charles, MO (NPI 1639509607).
Provider details
- NPI number
- 1639509607
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PMHNP-BC
- Sex
- Female
- Sole proprietor
- Yes
- License
- 2013039398 (MO)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
12 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
181 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 99 | $104 |
| Psychotherapy With Evaluation and Management Visit, 30 Minutes90833 | 68 | $59 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 14 | $136 |
Typical Medicare-allowed amounts for these services range $59–$136 (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 · 32 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Trazodone Hcl | 76 | 22 |
| Aripiprazole | 73 | 16 |
| Venlafaxine Hclbrand: Venlafaxine Hcl Er | 70 | 14 |
| Clonazepam | 61 | 13 |
| Alprazolam | 58 | 19 |
| Lamotrigine | 58 | 18 |
| Sertraline Hcl | 53 |
Practice location
Mailing address
Additional practice locations (1)
- 102 Compass Point DrSaint Charles, MO 63301-4404Phone: (636) 946-4000
Registry dates
- Enumerated
- 2013-11-12
- Last updated
- 2018-05-01
Frequently asked questions
- What is Melissa Fischer's NPI number?
- Melissa Fischer's National Provider Identifier (NPI) is 1639509607, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Melissa Fischer's specialty?
- Melissa Fischer is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Melissa Fischer located?
- Melissa Fischer's practice location on file with NPPES is 102 Compass Point Dr, Saint Charles, MO 63301-4404.
- What is Melissa Fischer's phone number?
- The practice phone number listed in the NPPES registry for Melissa Fischer is (636) 946-4000.
- Does Melissa Fischer accept Medicare?
- Melissa Fischer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Melissa Fischer's NPI active?
- Yes — Melissa Fischer's NPI (1639509607) is active in the NPPES registry as of the last update on 2018-05-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.