Marissa Flaherty, MD
NPI 1881011062 · Psychiatry Physician · Baltimore, MD
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marissa Flaherty, MD is a Psychiatry Physician provider in Baltimore, MD (NPI 1881011062).
Provider details
- NPI number
- 1881011062
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- D81719 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
27 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 27 | $80 |
Typical Medicare-allowed amounts for these services range $80–$80 (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 · 36 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Sertraline Hcl | 115 | 11 |
| Trazodone Hcl | 112 | 12 |
| Fluoxetine Hcl | 110 | — |
| Olanzapine | 93 | — |
| Aripiprazole | 89 | — |
| Escitalopram Oxalate | 74 | — |
| Clozapine | 60 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-03-25
- Last updated
- 2020-07-21
- Certified
- 2020-07-21
Frequently asked questions
- What is Marissa Flaherty's NPI number?
- Marissa Flaherty's National Provider Identifier (NPI) is 1881011062, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marissa Flaherty's specialty?
- Marissa Flaherty is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Marissa Flaherty located?
- Marissa Flaherty's practice location on file with NPPES is 701 W Pratt St Fl 4, Baltimore, MD 21201-1023.
- What is Marissa Flaherty's phone number?
- The practice phone number listed in the NPPES registry for Marissa Flaherty is (410) 328-1107.
- Does Marissa Flaherty accept Medicare?
- Marissa Flaherty is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marissa Flaherty's NPI active?
- Yes — Marissa Flaherty's NPI (1881011062) is active in the NPPES registry as of the last update on 2020-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.