Quick answers
- Where does Nicholas Portell see patients?
- Medicare's clinician data lists 4 practice locations, including Affton, MO, Ballwin, MO and Ellisville, MO. Call before your visit to confirm the address.
- What is Nicholas Portell's specialty?
- Medicare lists Optometry as the primary specialty.
- Does Nicholas Portell accept Medicare assignment?
- Yes. Medicare's clinician data says Nicholas Portell accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Nicholas Portell?
- (314) 282-9050, as listed in official Medicare / NPI Registry data.
- What is Nicholas Portell's NPI number?
- 1851916035. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Nicholas Portell is enrolled with Medicare (CMS data updated 2026-10-02).
- 10101 Gravois RdAffton, MO 63123 (314) 282‑9050
- 14842 Manchester RdBallwin, MO 63011 (636) 557‑2020
- 194 Clarkson RdEllisville, MO 63011 (636) 227‑2020
- 3122 S Grand Blvd, The Spec ShoppeSt Louis, MO 63118 (314) 450‑7313
Group practices
Medicare enrollment lists Nicholas Portell as a member of this group (CMS data updated 2026-10-02).
- Clarkson Optometry Inc82 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in Missouri
Clinicians with the same Medicare primary specialty in Missouri — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Medical school | University Of Missouri St Louis - School Of Optometry |
| Graduation year | 2020 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1851916035 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians