Spencer L. Nielson, DO
Emergency Medicine Physician · Buffalo, NY
Spencer L. Nielson, DO is an emergency medicine physician with a practice address in Buffalo, New York, and NPI 1417419227, issued on Apr 1, 2019. Check the license on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Spencer L. Nielson
- Credential
- DO
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 02007915A IN
Self-reported in NPPES; status is on the state search - Practice location
- 955 Main St Ste 7230, Buffalo, NY 14203
- Phone
- (716) 829-6124
- Enumerated
- Apr 1, 2019
- Record last updated
- Aug 15, 2024
- Fax
- (716) 829-3999
- Medicare enrollment
- Enrolled (PECOS I20240823001568); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 5,025 in New York → Look up another NPI →
Also registered at 955 Main St Ste 7230
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sarah AlemStudent in an Organized Health Care Education/Training Program1003660424
- Mody AminStudent in an Organized Health Care Education/Training Program1366182628
- Lester Bayona Chuye, MDStudent in an Organized Health Care Education/Training Program1104406099
- Henry Brak, DOStudent in an Organized Health Care Education/Training Program1740120658
- Daniel Burton, MDEmergency Medicine Physician1801475082
- Jeanvieve CannonStudent in an Organized Health Care Education/Training Program1538863360
Verify Spencer L. Nielson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the ProfessionsCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
30% fewer Medicare Part D claims than the average emergency medicine physician in 2024
158 Medicare Part D claims for 113 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
Most prescribed
- Cephalexin22 claims
- Ondansetron Odt19 claims
- Prednisone17 claims
- Methocarbamol15 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 95.2 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Cep America LLCGary, IN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Spencer L. Nielson among 5,025 emergency medicine physician records in New York
Spencer L. Nielson, DO is one of 5,025 emergency medicine physician records with a practice address in New York. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 79% of them.
- NPI issued2019 · 79% of these records are older, 17% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2019 · median 2013 among the 3,232 with a school on file
- Record last updated2024 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
156 emergency medicine physician records list a practice address in Buffalo
They are 156 of the 13,287 NPPES records with a practice address in Buffalo, and 5,025 emergency medicine physician records in New York.
All 5,025 in New York → Every provider in Buffalo → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Cristine Adams, MDBuffalo, NY 142031134161193
- Jeanne Basior, MDBuffalo, NY 142031982610994
- Mary Bennett, MDBuffalo, NY 142031457368094
- Dawn Bingeman, MDBuffalo, NY 142031144237785
- Jason Borton, MDBuffalo, NY 142031932137429
- Andrew Covey, MDBuffalo, NY 142031235169871
- Christian Defazio, MDBuffalo, NY 142031689627465
- Michael Klein, DOBuffalo, NY 142031912940446
Common questions
What is Spencer L. Nielson, DO's NPI number?
Spencer L. Nielson, DO's National Provider Identifier (NPI) is 1417419227, issued on Apr 1, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Spencer L. Nielson, DO located?
The NPPES record lists a practice address at 955 Main St Ste 7230, Buffalo, NY, 14203. Phone: (716) 829-6124. Providers update this record themselves, so call before visiting.
How can I verify Spencer L. Nielson, DO's license?
Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Spencer L. Nielson, DO prescribe under Medicare Part D?
In 2024, Spencer L. Nielson, DO had 158 Medicare Part D claims for 113 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Spencer L. Nielson, DO's MIPS final score?
The 2023 MIPS final score is 95.2 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.