DR. JOHN STEVEN LAMMERT (MD) – Internal Medicine Physician, NPI 1699727909
Internal Medicine Physician
Main info
Doctor Profile
Contacts
Profile Insights
NPPES metrics only — not quality of care.
5,405 INTERNAL MEDICINE in GA
Provider Addresses for DR. JOHN STEVEN LAMMERT (MD)
900 TOWNE LAKE PKWY STE 210
WOODSTOCK, GA 301891603
Phone: (770) 592-2300
Fax: (770) 592-2040
Type: Mailing
Cherokee Street Northeast, Elizabeth, Marietta, Cobb County, Georgia, 30061, United States
MARIETTA, GA 300601609
Phone: (678) 354-3426
Fax: (678) 354-3469
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 11 Open Payments records for all available years, with a total value of $195.
Total Amount is formed as General ($195) + Research ($0) + Ownership ($0) = $195.
Last reported payment date: 2024-08-15 • Largest payer in this snapshot: AstraZeneca Pharmaceuticals LP ($43).
Total Amount
$195
General + Research + Ownership
Payments
11
Total payment records
General Amount
$195
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-08-15
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| AstraZeneca Pharmaceuticals LP | $43 |
| Novo Nordisk Inc | $37 |
| ABBVIE INC. | $27 |
| Insulet Corporation | $21 |
| GlaxoSmithKline, LLC. | $19 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2005-10-28
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20051028000259 | I | Internal Medicine | GA | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 212 | 163 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 138 | 120 | $0 |
| G0439 | Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 94 | 94 | $0 |
| G0008 | Administration of influenza virus vaccine | 37 | 37 | $0 |
| 90662 | Influenza vaccine split virus, preservative free | 35 | 35 | $0 |
Insurance plans in this area (ZIP 30189)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Family Practice | GA | |
| Nurse Practitioner | GA | |
| Nurse Practitioner | GA | |
| Family Practice | GA | |
| - | GA | |
| - | GA | |
| Family Practice | GA | |
| Nurse Practitioner | GA | |
| - | GA | |
| Family Practice | GA |
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