Marcus Niemi, P.A.
NPI 1952438087 · Physician Assistant · Bronx, NY
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marcus Niemi, P.A. is a Physician Assistant provider in Bronx, NY (NPI 1952438087).
Provider details
- NPI number
- 1952438087
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- P.A.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 007050-1 (NY)
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
19 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
211 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) |
|---|---|---|
| Critical Care, First 30-74 Minutes99291 | 195 | $175 |
| Critical Care, Each Additional 30 Minutes99292 | 16 | $88 |
Typical Medicare-allowed amounts for these services range $88–$175 (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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-02-27
- Last updated
- 2007-07-08
Frequently asked questions
- What is Marcus Niemi's NPI number?
- Marcus Niemi's National Provider Identifier (NPI) is 1952438087, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marcus Niemi's specialty?
- Marcus Niemi is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Marcus Niemi located?
- Marcus Niemi's practice location on file with NPPES is 111 E 210th St Fl 6, Bronx, NY 10467-2401.
- What is Marcus Niemi's phone number?
- The practice phone number listed in the NPPES registry for Marcus Niemi is (718) 920-2961.
- Does Marcus Niemi accept Medicare?
- Marcus Niemi is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marcus Niemi's NPI active?
- Yes — Marcus Niemi's NPI (1952438087) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.