Allison Williams
Allison Williams is a Pediatrics Physician in Pittsburgh, PA, registered under NPI 1003201708.
Getting there
Here is what surrounds this office in Pittsburgh, based on OpenStreetMap data collected Sep 6, 2026. Parking is available about 550 ft away. The nearest transit stop is 486 ft away, served by Penn Ave at 45th St. A pharmacy sits 0.43 mi from the entrance (Bloomfield Drug Store), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.32 mi away.
Getting here and what is nearby
Parking 249 ft ~1 min
Transit Penn Ave at 44th St (Childrens Hospital) 419 ft ~2 min
Transit Penn Ave at Friendship Ave 483 ft ~2 min
Transit Penn Ave at 45th St 486 ft ~2 min
Parking Taste of India Parking 538 ft ~3 min
Parking 550 ft ~3 min
Restaurant Taste of India 531 ft ~3 min
Mo-Th 11:00-14:30, 05:00-22:00; Fr 11:00-14:30, 05:00-22:30; Sa 05:00-22:30; Su 05:00-22:00
Coffee Caffé Mona La Bistro 637 ft ~3 min
4200 Penn Avenue
Mo-Fr 07:00-15:00; Sa, Su 09:00-15:00
Restaurant Graziano's Pizzeria 670 ft ~3 min
4109 Penn Avenue
Mo-Sa 11:00-22:00; Su 11:00-21:00
Restaurant Los Cabos Mexican Restaurant 676 ft ~3 min
Pharmacy Wilson's Pharmacy 749 ft ~3 min
4101 Penn Avenue, Pittsburgh 15224
Mo-Fr 09:00-19:00; Sa 09:00-15:00; Su 09:00-14:00
Gas station Sunoco 863 ft ~4 min
Coffee Constellation Coffee 887 ft ~4 min
4059 Penn Avenue, Pittsburgh 15224
Tu-Su 08:00-14:00
Grocery Community Supermarket 0.22 mi ~5 min
4401 Liberty Avenue, 15224
Mo-Sa 07:00-22:00; Su 08:00-21:00
Coffee Yinz Coffee 0.32 mi ~7 min
4525 Liberty Avenue, Pittsburgh 15224
Mo-Fr 06:00-21:00, Sa-Su 07:00-21:00
Convenience Butler Street News & More 0.43 mi ~9 min
Pharmacy Bloomfield Drug Store 0.43 mi ~9 min
4727 Liberty Avenue
Mo-Fr 09:30-18:00; Sa 09:30-15:00
Convenience GetGo 0.45 mi ~10 min
Gas station GetGo 0.46 mi ~10 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 |
|---|---|---|
| MD463815 | PA | Pediatrics Physician primary |
This provider holds licence MD463815 issued in PA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Pediatric Medicine
- PAC ID
- 0143576199
- Enrollment ID
- I20180703003069
Medicare enrolment is recorded as approved under the provider type Practitioner - Pediatric Medicine. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Pediatrics covers
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development. NUCC Health Care Provider Taxonomy, code 208000000X
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 | 1003201708 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 31, 2015 |
| Last updated | Jul 28, 2021 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Practice address |
4401 PENN AVE AOB SUITE 5400 Pittsburgh, PA 15224 (412) 692-5285 |
| Mailing address |
4401 PENN AVE FL 3 Pittsburgh, PA 15224 |
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 | 2 | 0 | 1 | 7 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 0 | 2 | 7 | 0 |
Sum = 42 · next multiple of 10 = 50 · check digit = 8 · actual last digit = 8
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.