Jessica Tatsui
Jessica Tatsui is a Pediatric Occupational Therapist in Chicago, IL, registered under NPI 1003641242.
Getting there
Here is what surrounds this office in Chicago, based on OpenStreetMap data collected Oct 12, 2026. Parking is available about 874 ft away. The nearest transit stop is 495 ft away, served by Damen & Eastwood (Brown Line). A pharmacy sits 0.28 mi from the entrance (CVS Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.25 mi away.
Getting here and what is nearby
Coffee La Boulangerie & Co 35 ft ~1 min
1945 West Wilson Avenue, Chicago 60640
Mo-Sa 08:00-17:00; Su 08:00-15:00
Transit Damen & Wilson 97 ft ~1 min
Parking 129 ft ~1 min
Transit Damen & Wilson 210 ft ~1 min
Parking Ravenswood Medical Center 381 ft ~2 min
4501-4523 North Damen Avenue
Transit Damen & Eastwood (Brown Line) 495 ft ~2 min
Gas station Mobil 540 ft ~3 min
4632-4638 North Damen Avenue, Chicago 60625
Restaurant Siam Country Thai Cuisine 520 ft ~2 min
4637 North Damen Avenue, Chicago 60625
Fr, Sa 11:30-22:00; Mo-Th, Su 11:30-21:30
Convenience Mobil Mart 558 ft ~3 min
2010 West Eastwood Avenue, Chicago 60625
Restaurant Pita Express 642 ft ~3 min
4649 North Damen Avenue, Chicago 60625
Mo-Su 11:00-22:00
Coffee The Perfect Cup 840 ft ~4 min
4700 North Damen Avenue, Chicago 60625
Su-Sa 07:00-19:00
Parking 874 ft ~4 min
Restaurant Plenty 0.22 mi ~5 min
2002 West Montrose Avenue, Chicago 60618
Coffee Starbucks 0.25 mi ~6 min
1900 West Montrose Avenue, Chicago 60613
Su 06:00-20:00; Mo-Fr 05:00-20:00; Sa 06:00-19:00
Convenience Best Buy Food & Liquor 0.27 mi ~6 min
Mo-Sa 10:00-23:00; Su 10:00-22:00
Pharmacy CVS Pharmacy 0.28 mi ~6 min
Grocery Mariano's Fresh Market 0.35 mi ~7 min
1800 West Lawrence Avenue, Chicago 60640
Grocery L&M Fine Foods 0.35 mi ~8 min
Su-Sa 08:00-20:00
Grocery Jewel-Osco 0.48 mi ~10 min
4250 North Lincoln Avenue, Chicago 60618
Mo-Su 06:00-24:00
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
NPPES does not list a state licence number for this record. That is not unusual — organizations and some provider types are not required to file one. Verify current licensure with the relevant state board before care.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Pediatrics covers
Occupational therapists provide services to infants, toddlers and children who have or who are at risk for developmental delays or disabilities. Occupational therapy is concerned with a child's ability to participate in daily life activities or "occupations." Occupational therapists use their unique expertise to help children with social-emotional, physical, cognitive, communication, and adaptive behavioral challenges and to help children to be prepared for and perform important learning and school-related activities and to fulfill their rule as students. Through an understanding of the impact of disability, illness, and impairment on a child's development, plan, ability to learn new skills, and overall occupational performance, occupational therapists design interventions that promote healthy development, establish needed skills, and/or modify environments, all in support of participation in daily activities. NUCC Health Care Provider Taxonomy, code 225XP0200X
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1003641242 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Sep 6, 2024 |
| Last updated | Sep 6, 2024 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Practice address |
1945 W WILSON AVE Chicago, IL 60640 (773) 782-2773 |
| Mailing address |
4026 DOBSON ST Skokie, IL 60076 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 0 | 0 | 3 | 6 | 4 | 1 | 2 | 4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 3 | 4 | 2 | 2 | 8 |
Sum = 48 · next multiple of 10 = 50 · check digit = 2 · actual last digit = 2
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.