Doctor Profile

Cancer Care · Hematology/Oncology

Hillary A. Hahm

MD · Hematology/Oncology · Johns Hopkins University School Of Medicine
4441 ATLANTA RD SE
SUITE 302
Smyrna, GA 30080
✓ Accepts Medicare 🎓 45+ Years Practicing
507
Medicare Patients / yr
9
Procedures Billed
45
Years Practicing
3
Hospital Affiliations
Data Source: Identity from NPPES (2026). Procedure & patient volume from CMS Medicare Provider Utilization & Payment Data (2023). Hospital affiliations from CMS Physician Compare. We display publicly reported data — no personal information required to view any of it.
Reviewed by: Wes Ward, Founder & Data Lead • View our methodology

Important: We are not affiliated with Medicare, CMS, or Hillary A. Hahm's practice. This page displays publicly available CMS data to help you research Medicare providers. We do not sell insurance or represent any insurance company. For official enrollment and complete plan information, visit Medicare.gov or call 1-800-MEDICARE.

Medicare Plans That Cover Dr. Hahm

See which plans Dr. Hahm accepts

We're pulling plan acceptance data directly from insurance carrier provider directories. Until that feed is live for Georgia, the fastest way to find a Medicare plan that covers Dr. Hahm is to compare every Medicare Advantage and Part D plan available near 30080, GA — the Hematology/Oncology's office can quickly confirm which of the top local plans they accept.

Compare Medicare Plans near 30080, GA →

Or call the office at (470) 267-1760 to confirm acceptance directly.

What Dr. Hahm Does

Dr. Hahm served 507 Medicare patients across 722 services in the latest CMS reporting year. That's 61% below the average Hematology/Oncology in Georgia (1,306 patients across 233 doctors).

ProcedureServicesMedicare Patients
Established patient office or other outpatient visit, 30-39 minutes (99214)421242
Established patient office or other outpatient visit, 20-29 minutes (99213)122111
Established patient office or other outpatient visit, 40-54 minutes (99215)5243
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)3023
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)2826

How to read this: "Services" are the total times Dr. Hahm billed Medicare for each procedure in the latest reporting year. "Patients" counts unique Medicare beneficiaries. Procedures are shown in plain English; the underlying HCPCS codes are available on request.

Hospital Affiliations

Dr. Hahm is affiliated with 3 hospitals according to CMS Physician Compare. Below are the 3 hospitals with full quality profiles on our site. Hospital network status depends on your Medicare Advantage plan — always verify before enrolling.

Wellstar Kennestone Regional Medical Center

Marietta, GA
★★★★☆ 4/5 CMS Rating

Wellstar Paulding Medical Center

Hiram, GA
★★★★☆ 4/5 CMS Rating

Wellstar Cobb Medical Center

Austell, GA
★★☆☆☆ 2/5 CMS Rating

Practice Location & Telehealth Readiness

Dr. Hahm practices at the address below. If you're evaluating Medicare coverage, location matters for in-network access and — when Dr. Hahm offers telehealth — broadband availability at your home matters for virtual visits.

Address: 4441 ATLANTA RD SE, SUITE 302, Smyrna, GA 30080
Phone: (470) 267-1760

Area Safety Grade

D

Block-level crime analysis from CrimeGrade.org.

Practice Accessibility

33 min

Average commute time in this zip · 71% of residents drive to work. Practical context for patients deciding whether to make the trip. See the full neighborhood profile at BestNeighborhood.org.

Telehealth Readiness

82.7399

Households with fiber broadband — important for reliable virtual visits. Check your address at ISPReports.org.

Get directions on Google Maps →

Other Cancer Care Doctors near 30080, GA

If Dr. Hahm isn't accepting new patients or isn't in your plan's network, these are the closest cancer care doctors near 30080, GA:

DoctorSpecialtyMedicare Patients / yrDistance
David D. ShepardMedical Oncology1882.2 mi
Aron E. KefelaHematology/Oncology4856.0 mi
Minesh NandiMedical Oncology406.0 mi
Sujatha HariharanHematology/Oncology4406.0 mi
William L. Forehand, IiiHematology/Oncology4626.0 mi
Navin P. WadehraHematology/Oncology4486.0 mi

View all cancer care doctors near 30080, GA →

How to Use This Information

Choosing a Medicare plan that covers Dr. Hahm takes three steps:

Compare Medicare Plans near 30080, GA → All Doctors near 30080, GA

Hillary A. Hahm: Common Questions

Does Dr. Hahm accept Medicare?
Yes. Dr. Hahm is enrolled with Medicare and listed in the CMS Provider Enrollment, Chain, and Ownership System (PECOS). Whether a specific Medicare Advantage plan covers Dr. Hahm depends on that plan's provider network. Compare Medicare plans near 30080, GA →
Where is Dr. Hahm's office?
Dr. Hahm practices at 4441 ATLANTA RD SE, SUITE 302, Smyrna, GA 30080. Phone: (470) 267-1760.
What Medicare plans does Dr. Hahm accept?
Original Medicare (Parts A & B) is accepted. Medicare Advantage plan acceptance varies by carrier and plan year. Call the office at (470) 267-1760 to confirm your specific plan is accepted, or compare all Medicare plans near 30080, GA to see available options.
Does Dr. Hahm offer telehealth visits?
CMS does not currently list Dr. Hahm as offering telehealth. Call the office at (470) 267-1760 to confirm whether virtual visits are available.
How experienced is Dr. Hahm?
Dr. Hahm graduated in 1981 and has been practicing for approximately 45 years. In the latest CMS reporting year, Dr. Hahm treated 507 Medicare patients across 9 distinct procedure types.
How do I know if Dr. Hahm is in-network for my Medicare plan?
Network status varies by plan. The best verification steps: (1) check your plan's provider directory at the carrier's website, (2) call the office at (470) 267-1760 and ask which plans they currently accept, and (3) call the number on the back of your Medicare card. Print our doctor questions checklist →

About the Reviewer

Wes Ward

Wes Ward

Founder & Data Lead

Wes Ward reviews all doctor profiles and methodology for data accuracy. Every Medicare provider page on this site — including the utilization statistics, hospital affiliations, and geocoded practice address — goes through his data-validation pipeline before publication. We display only publicly available CMS data; you never need to enter personal information to see any of it.

With 25+ years in data analytics — including work with highly regulated genomic data at Ancestry.com — Wes brings enterprise-level rigor to healthcare transparency. He is also a co-founder of BestNeighborhood.org (neighborhood data), CrimeGrade.org (block-level safety analytics), and ISPReports.org (broadband availability for telehealth). Those sister sites power the location and telehealth-readiness context on this page.

View full profile →LinkedIn

Data sources: CMS NPPES (2026), CMS Medicare Provider Utilization & Payment Data (2023), CMS Physician Compare, CrimeGrade.org, BestNeighborhood.org, ISPReports.org. This page is for informational purposes only. Always verify coverage directly with the plan and practice. Read our full methodology →Privacy policy

Medicare Resources

Choosing the right Medicare plan involves more than just doctor coverage. These guides help you evaluate the full picture:

Medicare Plans for Conditions Treated by Cancer Care Specialists

See which Medicare plans score highest for conditions commonly managed by this specialty in 30080, GA:

Does your Medicare plan cover Dr. Hahm?

Compare Plans near 30080, GA →