Nicole Reiko Guillen, MD
Emergency Medicine Physician · Sparks, NV
Nicole Reiko Guillen, MD is an emergency medicine physician with a practice address in Sparks, Nevada, and NPI 1528555026, issued on Apr 19, 2018. Check the license (Nevada 21097, as entered in NPPES) on the Nevada State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Nicole Reiko Guillen
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- 21097 NV
A166122 CA
MD217502 OR
Self-reported in NPPES; status is on the state search - Practice location
- 2375 E Prater Way, Sparks, NV 89434
- Phone
- (775) 356-4040
- Enumerated
- Apr 19, 2018
- Record last updated
- Jan 27, 2025
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 575 in Nevada → Look up another NPI →
Also registered at 2375 E Prater Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Travis Anderson, M.D.Emergency Medicine Physician1336535897
- Justin Bumgardner, MDHospitalist Physician1508361007
- Jerry Calvanese, MDEmergency Medical Services (Emergency Medicine) Physician1528027752
Verify Nicole Reiko Guillen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNevada State Board of Medical Examiners
Search for license 21097Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
6% fewer Medicare Part D claims than the average emergency medicine physician in 2024
213 Medicare Part D claims for 171 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
Most prescribed
- Cephalexin67 claims
- Prednisone24 claims
- Amoxicillin16 claims
- Amoxicillin-Clavulanate Potass15 claims
- Ciprofloxacin Hcl15 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 practice group's MIPS final score for 2023 (Medicare payment program): 93.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $16.75
1 payment: food and beverage; the largest payer was GlaxoSmithKline, LLC. The 12,335 providers of this specialty with any payment received $953.79 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Nicole Reiko Guillen among 575 emergency medicine physician records in Nevada
Nicole Reiko Guillen, MD is one of 575 emergency medicine physician records with a practice address in Nevada. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 71% of them.
- NPI issued2018 · 71% of these records are older, 24% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 64% of these records are
- Record last updated2025 · 45% 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 Nevada practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
22 emergency medicine physician records list a practice address in Sparks
They are 22 of the 2,016 NPPES records with a practice address in Sparks, and 575 emergency medicine physician records in Nevada.
All 575 in Nevada → Every provider in Sparks → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Lisa Akers-Hudson, MDSparks, NV 894341184693319
- Travis Anderson, M.D.Sparks, NV 894341336535897
- Lauren Cantwell, MDSparks, NV 894341326493503
- Gina Dapra, MDSparks, NV 894341558320705
- William Davis, MDSparks, NV 894341013976901
- Heinrich Fan, MDSparks, NV 894341851824528
- Katrin Lamprecht, MDSparks, NV 894341457797250
- Stephan Mussehl, DOSparks, NV 894341275593436
Common questions
What is Nicole Reiko Guillen, MD's NPI number?
Nicole Reiko Guillen, MD's National Provider Identifier (NPI) is 1528555026, issued on Apr 19, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Nicole Reiko Guillen, MD located?
The NPPES record lists a practice address at 2375 E Prater Way, Sparks, NV, 89434. Phone: (775) 356-4040. Providers update this record themselves, so call before visiting.
How can I verify Nicole Reiko Guillen, MD's license?
NPPES lists Nevada license number 21097, as entered by the provider. Search the Nevada State Board of Medical Examiners at https://medboard.nv.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Nicole Reiko Guillen, MD prescribe under Medicare Part D?
In 2024, Nicole Reiko Guillen, MD had 213 Medicare Part D claims for 171 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Nicole Reiko Guillen, MD's MIPS final score?
The 2023 MIPS final score is 93.6 of 100, reported for the practice group. 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.