Marissa Lewis, M.D.
NPI 1164874822 · Emergency Medicine Physician · Saint Louis, MO
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marissa Lewis, M.D. is a Emergency Medicine Physician provider in Saint Louis, MO (NPI 1164874822).
Provider details
- NPI number
- 1164874822
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 2019016334 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
9 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
4,894 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Measurement of Brain Wave Activity (eeg), Awake and Drowsy95816 | 1,126 | $375 |
| Exam of Neurobehavioral Status, First Hour96116 | 1,122 | $90 |
| Biofeedback Training90901 | 1,120 | $39 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 1,108 | $88 |
| Emergency Department Visit With High Level of Medical Decision Making99285 | 243 | $171 |
| Critical Care, First 30-74 Minutes99291 | 104 | $208 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 1 distinct drug on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 17 | 17 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$18 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-07-06
- Last updated
- 2023-10-25
- Certified
- 2023-10-25
Frequently asked questions
- What is Marissa Lewis's NPI number?
- Marissa Lewis's National Provider Identifier (NPI) is 1164874822, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marissa Lewis's specialty?
- Marissa Lewis is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Marissa Lewis located?
- Marissa Lewis's practice location on file with NPPES is 660 S Euclid Ave, Saint Louis, MO 63110-1010.
- What is Marissa Lewis's phone number?
- The practice phone number listed in the NPPES registry for Marissa Lewis is (314) 747-4156.
- Does Marissa Lewis accept Medicare?
- Marissa Lewis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marissa Lewis's NPI active?
- Yes — Marissa Lewis's NPI (1164874822) is active in the NPPES registry as of the last update on 2023-10-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.