Carissa Mcilwain, PA-C
Carissa Mcilwain, PA-C is an Obstetrics & Gynecology Physician in Bala Cynwyd, PA, registered under NPI 1003387572.
Getting there
Here is what surrounds this office in Bala Cynwyd, based on OpenStreetMap data collected Sep 23, 2026. Parking is available about 0.48 mi away at Hawks' Landing. The nearest transit stop is 0.50 mi away, served by City Av & Belmont Av - FS. A pharmacy sits 0.23 mi from the entrance (CVS Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.48 mi away.
Getting here and what is nearby
Parking 129 ft ~1 min
Parking 139 ft ~1 min
Restaurant Taco Bell 619 ft ~3 min
5 West City Avenue, Bala Cynwyd 19004
09:00-22:00
Convenience 7-Eleven 783 ft ~3 min
1 City Avenue, Bala Cynwyd 19004
Gas station Sunoco 812 ft ~4 min
Convenience Sunoco 829 ft ~4 min
Restaurant McDonald's 971 ft ~4 min
5020 City Line Avenue, Philadelphia 19131
06:00-23:00
Restaurant Philly Pretzel Factory 0.20 mi ~4 min
5022 City Avenue, Philadelphia
Mo-Fr 06:00-18:00; Sa-Su 08:00-17:00
Pharmacy CVS Pharmacy 0.23 mi ~5 min
Grocery Acme 0.32 mi ~7 min
121 East City Avenue, Bala Cynwyd 19004
Mo-Fr 06:00-23:00; Sa 06:00-23:00; Su 06:00-23:00
Convenience Joe's Kwik Marts 0.34 mi ~7 min
5110 City Line Avenue, Philadelphia 19131
05:00-24:00
Gas station Exxon 0.34 mi ~7 min
5110 City Line Avenue, Philadelphia 19131
05:00-24:00
Coffee Starbucks 0.35 mi ~7 min
Coffee Kung Fu Tea 0.41 mi ~9 min
Mo-Th,Su 11:00-21:00; Fr-Sa 11:00-22:00
Hotel Philly Inn & Suites 0.42 mi ~9 min
Gas station Lukoil 0.44 mi ~9 min
Coffee Starbucks 0.48 mi ~10 min
Parking Hawks' Landing 0.48 mi ~10 min
2461 North 54th Street, Philadelphia 19131
Transit City Av & Belmont Av - FS 0.50 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 |
|---|---|---|
| OA002318 | PA | Obstetrics & Gynecology Physician primary |
This provider holds licence OA002318 issued in PA. 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 Obstetrics & Gynecology covers
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women. NUCC Health Care Provider Taxonomy, code 207V00000X
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 | 1003387572 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Dec 10, 2018 |
| Last updated | Dec 10, 2018 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | PA-C |
| Practice address |
25 BALA AVE STE 205 Bala Cynwyd, PA 19004 (610) 667-6363 |
| Mailing address |
19 OLD OAKS RD Bryn Mawr, PA 19010 |
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 | 3 | 8 | 7 | 5 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 6 | 8 | 5 | 5 | 5 |
Sum = 58 · next multiple of 10 = 60 · 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.