NPPES file of Aug 9, 2026

Daemeon Achilles Nicolaou, MD

Orthopaedic Surgery Physician · St Louis, MO

Daemeon Achilles Nicolaou, MD is an orthopaedic surgery physician with a practice address in St Louis, Missouri, and NPI 1427219120, issued on Jun 24, 2008. Check the license (Missouri 201301987, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1427219120
Name
Daemeon Achilles Nicolaou
Credential
MD
Primary taxonomy
Orthopaedic Surgery Physician 207X00000X
License numbers
201301987 MO
2013021987 MO
A111473 CA
Self-reported in NPPES; status is on the state search
Practice location
3635 Vista Ave, St Louis, MO 63110
Phone
(314) 577-8850
Enumerated
Jun 24, 2008
Record last updated
Apr 12, 2023
Fax
(314) 268-5121
Medicare enrollment
Enrolled (PECOS I20130918000302); accepts Medicare assignment
Medical or professional school
University Of Michigan Medical School, 2008
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 3635 Vista Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Eman Spaulding, M.D.Emergency Medicine Physician1750571840

Verify Daemeon Achilles Nicolaou in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
    Search for license 201301987
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Missouri license search

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The practice group's MIPS final score for 2023 (Medicare payment program): 91 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.

  1. Qualityout of 100 · 30% of the final score82.1
  2. Costout of 100 · 30%64.1
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $36,573.51

49 payments; by number, the most common kind was food and beverage; the largest payer was Smith+Nephew, Inc. The 15,003 providers of this specialty with any payment received $23,022.89 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Daemeon Nicolaou$36,574
  2. Specialty average$23,023

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Alameda Health SystemOakland, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Daemeon Achilles Nicolaou among 514 orthopaedic surgery physician records in Missouri

Daemeon Achilles Nicolaou, MD is one of 514 orthopaedic surgery physician records with a practice address in Missouri. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 56% of them.

  • NPI issued2008 · 56% of these records are older, 40% newer
  • In a Medicare fileYes · 77% of these records are
  • In the CMS Doctors and Clinicians fileYes · 59% of these records are
  • Graduated2008 · median 2006 among the 302 with a school on file
  • Record last updated2023 · 54% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Orthopaedic Surgery Physician providers in Missouri

There are 514 orthopaedic surgery physician records in Missouri.

The 8 orthopaedic surgery physician records with the nearest ZIP codes

  1. R Stephen Burnett, MDSaint Louis, MO 631101144246364
  2. Thomas Debartolo, MDSt Louis, MO 631101871504472
  3. Kathryn Fischer, PASaint Louis, MO 631101528381647
  4. David Greenberg, MDSaint Louis, MO 631101881700607
  5. Pooya Hosseinzadeh, MDSaint Louis, MO 631101437363660
  6. David Karges, DOSaint Louis, MO 631101326060021
  7. Jay Keener, MDSaint Louis, MO 631101689692642
  8. Jeffrey Martin, MDSaint Louis, MO 631101740273796

Common questions

What is Daemeon Achilles Nicolaou, MD's NPI number?

Daemeon Achilles Nicolaou, MD's National Provider Identifier (NPI) is 1427219120, issued on Jun 24, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Daemeon Achilles Nicolaou, MD located?

The NPPES record lists a practice address at 3635 Vista Ave, St Louis, MO, 63110. Phone: (314) 577-8850. Providers update this record themselves, so call before visiting.

How can I verify Daemeon Achilles Nicolaou, MD's license?

NPPES lists Missouri license number 201301987, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

What is Daemeon Achilles Nicolaou, MD's MIPS final score?

The 2023 MIPS final score is 91 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.