Jillian Blalock, DO
Jillian Blalock, DO is an Emergency Medicine Physician in Marietta, GA, registered under NPI 1003377466. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
Here is what surrounds this office in Marietta, based on OpenStreetMap data collected Sep 22, 2026. Parking is available about 238 ft away. The nearest transit stop is 0.28 mi away. A pharmacy sits 0.21 mi from the entrance (Lacey's Marietta Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.22 mi away.
Getting here and what is nearby
Transit 56 ft ~1 min
Parking Ambulance Emergency Entrance Parking 108 ft ~1 min
Parking 152 ft ~1 min
Parking 238 ft ~1 min
Restaurant Panera Bread 392 ft ~2 min
732 Cherokee Street Northeast, Marietta 30060
Mo-Sa 06:30-20:00; Su 07:00-20:00
Restaurant Tropical Smoothie Cafe 407 ft ~2 min
732 Cherokee Street Northeast, Marietta 30060
Mo-Fr 07:00-21:00; Sa-Su 08:00-21:00
Restaurant Phyllis Brunch 442 ft ~2 min
732 Cherokee Street Northeast
Mo-Fr 07:00-15:00; Sa-Su 07:00-16:00
Convenience Citgo Quick Mart 663 ft ~3 min
690 Cherokee Street Northeast, Marietta 30060
Mo 06:00-23:30; Tu-Sa 06:00-22:00; Su 09:00-21:00
Gas station Citgo 689 ft ~3 min
690 Cherokee Street Northeast, Marietta 30060
Mo 06:00-23:30; Tu-Sa 06:00-22:00; Su 09:00-21:00
Pharmacy Lacey's Marietta Pharmacy 0.21 mi ~5 min
790 Church Street Northwest
Mo-Fr 08:00-18:00; Sa 09:00-12:00
Coffee Starbucks 0.22 mi ~5 min
811 Church Street Northwest, Marietta 30060
Mo-Tu,Fr 04:30-21:00; We 04:30-20:00; Th 06:00-21:00; Sa-Su 05:00-21:00
Gas station RaceTrac 0.27 mi ~6 min
840 Church Street Northwest, Marietta 30060
24/7
Transit 0.28 mi ~6 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 |
|---|---|---|
| 91161 | GA | Emergency Medicine Physician primary |
This provider holds licence 91161 issued in GA. 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 - Emergency Medicine
- PAC ID
- 7315276912
Enrolled in Medicare 2 times, across 2 states:
| State | Enrollment ID | Provider type |
|---|---|---|
| Georgia | I20220421001514 | Practitioner - Emergency Medicine |
| North Carolina | I20221230001285 | Practitioner - Emergency Medicine |
Medicare enrolment is recorded as approved under the provider type Practitioner - Emergency Medicine. There are 2 separate enrolment records across 2 states (GA, NC). Multiple enrolments usually mean the provider bills Medicare from more than one practice location, or has kept an earlier enrolment after moving. Each record carries its own enrolment ID, listed above. 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 Emergency Medicine covers
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury. NUCC Health Care Provider Taxonomy, code 207P00000X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 207P00000X | Emergency Medicine Physician | 91161 | GA | primary |
| 390200000X | Student in an Organized Health Care Education/Training Program | — | — |
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 | 1003377466 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 28, 2019 |
| Last updated | Feb 28, 2023 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | DO |
| Practice address |
677 CHURCH ST NE Marietta, GA 30060 (770) 793-5000 |
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 | 7 | 7 | 4 | 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 6 | 7 | 5 | 4 | 3 |
Sum = 54 · next multiple of 10 = 60 · check digit = 6 · actual last digit = 6
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.