Juan Armstrong, M.D.
NPI 1639259666 · Pulmonary Disease Physician · Acworth, GA
Enrolled with Medicare as Practitioner - Pulmonary Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Juan Armstrong, M.D. is a Pulmonary Disease Physician provider in Acworth, GA (NPI 1639259666).
Provider details
- NPI number
- 1639259666
- Entity type
- Individual
- Primary specialty
- Pulmonary Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 049848 (GA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,340 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 310 | $17 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 300 | $79 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 230 | $92 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 218 | $129 |
| Critical Care, First 30-74 Minutes99291 | 99 | $211 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 62 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Fluticasone/Umeclidin/Vilanterbrand: Trelegy Ellipta | 485 | 125 |
| Prednisone | 362 | 184 |
| Azelastine Hcl | 306 | 130 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 303 | 117 |
| Azithromycin | 183 | 139 |
| Methylprednisolone | 126 | 89 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,121 across 59 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 55 Whitcher St NeSuite 160Marietta, GA 30060-1155Phone: (770) 422-1372Fax: (770) 423-9651
Registry dates
- Enumerated
- 2006-10-16
- Last updated
- 2019-10-22
Frequently asked questions
- What is Juan Armstrong's NPI number?
- Juan Armstrong's National Provider Identifier (NPI) is 1639259666, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Juan Armstrong's specialty?
- Juan Armstrong is listed in the NPPES registry with a primary specialty of Pulmonary Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Juan Armstrong located?
- Juan Armstrong's practice location on file with NPPES is 4550 Cobb Parkway North Nw Ste 210, Acworth, GA 30101-4182.
- What is Juan Armstrong's phone number?
- The practice phone number listed in the NPPES registry for Juan Armstrong is (770) 422-1372.
- Does Juan Armstrong accept Medicare?
- Juan Armstrong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Juan Armstrong's NPI active?
- Yes — Juan Armstrong's NPI (1639259666) is active in the NPPES registry as of the last update on 2019-10-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.