Margaret Chang, M.D.
NPI 1770522476 · Family Medicine Physician · Lawrenceville, GA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margaret Chang, M.D. is a Family Medicine Physician provider in Lawrenceville, GA (NPI 1770522476).
Provider details
- NPI number
- 1770522476
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 81245 (GA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
192 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Initial Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, 50 Minutes Or More99306 | 96 | $178 |
| Nursing Facility Discharge Day Management, 30 Minutes Or Less99315 | 50 | $80 |
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308 | 46 | $73 |
Typical Medicare-allowed amounts for these services range $73–$178 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Atorvastatin Calcium | 63 |
| Apixabanbrand: Eliquis | 38 |
| Amlodipine Besylate | 37 |
| Pantoprazole Sodium | 36 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 34 |
| Metformin Hcl | 31 |
| Losartan Potassium | 26 |
| Levetiracetam | 24 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-06
- Last updated
- 2024-01-30
- Certified
- 2024-01-30
Frequently asked questions
- What is Margaret Chang's NPI number?
- Margaret Chang's National Provider Identifier (NPI) is 1770522476, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Chang's specialty?
- Margaret Chang is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Margaret Chang located?
- Margaret Chang's practice location on file with NPPES is 88 Johnson Rd Bldg 2, Lawrenceville, GA 30046-5520.
- What is Margaret Chang's phone number?
- The practice phone number listed in the NPPES registry for Margaret Chang is (404) 369-1907.
- Does Margaret Chang accept Medicare?
- Margaret Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margaret Chang's NPI active?
- Yes — Margaret Chang's NPI (1770522476) is active in the NPPES registry as of the last update on 2024-01-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.