Alyssa Johnson, M.D.
NPI 1720510274 · Emergency Medicine Physician · Manhasset, NY
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alyssa Johnson, M.D. is a Emergency Medicine Physician provider in Manhasset, NY (NPI 1720510274).
Provider details
- NPI number
- 1720510274
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
9 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
319 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) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 207 | $193 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 75 | $134 |
| Critical Care, First 30-74 Minutes99291 | 20 | $235 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 17 | $79 |
Typical Medicare-allowed amounts for these services range $79–$235 (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 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ibuprofen | 24 | 24 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 14 | 14 |
| Ciprofloxacin Hcl | 14 | 13 |
| Cyclobenzaprine Hcl | 14 | 14 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 12 | 11 |
| Prednisone | 12 | — |
| Metronidazole | 11 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2017-04-03
- Last updated
- 2021-01-13
- Certified
- 2021-01-13
Frequently asked questions
- What is Alyssa Johnson's NPI number?
- Alyssa Johnson's National Provider Identifier (NPI) is 1720510274, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alyssa Johnson's specialty?
- Alyssa Johnson is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Alyssa Johnson located?
- Alyssa Johnson's practice location on file with NPPES is 300 Community Dr, Manhasset, NY 11030-3816.
- What is Alyssa Johnson's phone number?
- The practice phone number listed in the NPPES registry for Alyssa Johnson is (516) 470-7873.
- Does Alyssa Johnson accept Medicare?
- Alyssa Johnson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alyssa Johnson's NPI active?
- Yes — Alyssa Johnson's NPI (1720510274) is active in the NPPES registry as of the last update on 2021-01-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.