Ariel Witkin, PT
Ariel Witkin, PT is a Physical Therapist in Portland, OR, registered under NPI 1003462680.
Getting there
Here is what surrounds this office in Portland, based on OpenStreetMap data collected Sep 28, 2026. Parking is available about 0.37 mi away. There is EV charging 0.27 mi from the office (EVgo) — useful if you are driving in from out of town. The nearest transit stop is 0.23 mi away, served by Northwest 21st & Pettygrove. A pharmacy sits 0.46 mi from the entrance (Walgreens), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 935 ft away.
Getting here and what is nearby
Parking 128 ft ~1 min
Coffee The Sultan Cafe 143 ft ~1 min
Transit Northwest 19th & Raleigh 213 ft ~1 min
Transit Northwest 18th & Raleigh 253 ft ~1 min
Restaurant Playdate PDX 480 ft ~2 min
Restaurant Justa Pasta 485 ft ~2 min
Restaurant Olympia Provisions Northwest 713 ft ~3 min
Coffee Cycle Town Coffee Roasters 751 ft ~3 min
Coffee Twisted Patisserie 935 ft ~4 min
1784 Northwest Northrup Street, Portland 97209
Transit Northwest 21st & Pettygrove 0.23 mi ~5 min
Hotel Inn at Northrup Station 0.23 mi ~5 min
2025 Northwest Northrup Street, Portland 97209
EV charging EVgo 0.27 mi ~6 min
Grocery New Seasons Market 0.30 mi ~7 min
Gas station Northwest Gas 0.31 mi ~7 min
Gas station Astro 0.32 mi ~7 min
Parking 0.33 mi ~7 min
2135 Northwest Marshall Street, Portland 97210
Grocery Safeway 0.34 mi ~7 min
1303 Northwest Lovejoy Street, Portland 97209
06:00-24:00
Pharmacy Safeway 0.35 mi ~7 min
1303 Northwest Lovejoy Street, Portland 97209
Mo-Fr 09:00-21:00; Sa 09:00-18:00; Su 10:00-18:00
Gas station Chevron 0.37 mi ~8 min
Parking 0.37 mi ~8 min
2144 Northwest Marshall Street, Portland 97210
Convenience Chevron 0.38 mi ~8 min
Pharmacy Walgreens 0.46 mi ~10 min
1215 Northwest 23rd Avenue, Portland 97210
Mo-Fr 08:30-18:00
Convenience Lovejoy Grocery 0.50 mi ~10 min
1025 Northwest 23rd Avenue, Portland 97210
Hotel Residence Inn 0.53 mi ~11 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 63262 | OR | Physical Therapist primary |
This provider holds licence 63262 issued in OR. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
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 Physical Therapist covers
Physical therapists (PTs) are licensed health care professionals who diagnose and treat individuals of all ages, from newborns to the very oldest, who have medical problems or other health-related conditions that limit their abilities to move and perform functional activities in their daily lives. PTs examine each individual and develop a plan using treatment techniques to promote the ability to move, reduce pain, restore function, and prevent disability. In addition, PTs work with individuals to prevent the loss of mobility before it occurs by developing fitness- and wellness-oriented programs for healthier and more active lifestyles. PTs: 1.Diagnose and manage movement dysfunction and enhance physical and functional abilities. 2.Restore, maintain, and promote not only optimal physical function but optimal wellness and fitness and optimal quality of life as it relates to movement and health. 3.Prevent the onset, symptoms, and progression of impairments, functional limitations, and disabilities that may result from diseases, disorders, conditions, or injuries. 4.Treat conditions of the musculoskeletal, neuromuscular, cardiovascular, pulmonary, and/or integumentary systems. 5.Address the negative effects attributable to unique personal and environmental factors as they relate to human performance. 6.PTs provide care for people in a variety of settings, including hospitals, private practices, outpatient clinics, home health agencies, schools, sports and fitness facilities, work settings, and nursing homes. State licensure is required in each state in which a PT practices. NUCC Health Care Provider Taxonomy, code 225100000X
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 | 1003462680 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Aug 10, 2019 |
| Last updated | Aug 10, 2019 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | PT |
| Practice address |
1515 NW 18TH AVE STE 400 Portland, OR 97209 (503) 228-1306 Fax (503) 228-1307 |
| Other names |
Ari Witkin Other Name |
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 | 4 | 6 | 2 | 6 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 8 | 6 | 4 | 6 | 7 |
Sum = 60 · next multiple of 10 = 60 · check digit = 0 · actual last digit = 0
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.