Doctor profile · Federal record
Dr. John Lammert, MD
Internal Medicine Physician (CMS: Internal Medicine) · Woodstock, GA
- NPI 1699727909
- Accepts Medicare
- 37 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
900 Towne Lake Pkwy Ste 210
Woodstock, GA 301891603
(770) 592-2300
fax (770) 592-2040
Credentials & registration
- NPI registered
- May 2006 — 20 yrs on file
- Profile last updated
- October 17, 2025
- Year of graduation
- 1989 — 37 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Georgia #33619
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1699727909. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
588
Distinct HCPCS
10
Medicare allowed
$58,988
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 212 | 163 | $89 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 138 | 120 | $126 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 94 | 94 | $127 | |
G0008 |
Administration of influenza virus vaccine | 37 | 37 | $31 | |
90662 |
Influenza vaccine split virus, preservative free | 35 | 35 | $72 | |
99212 |
Established patient office or other outpatient visit, 10-19 minutes | 18 | 15 | $50 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 14 | 14 | $165 | |
G0402 |
Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment | 14 | 14 | $163 | |
93000 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 13 | 13 | $14 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 13 | 13 | $112 |
In context: peer comparison
Among 6 peers in Woodstock Internal Medicine Physician, average services per provider: 96. This provider delivers 6.1× the peer median.Open Payments
Industry payments received
All-time total
$137
Transactions
8
Manufacturers
6
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Novo Nordisk INC | 2 | $36.82 | |
| AstraZeneca Pharmaceuticals Lp | 2 | $28.79 | |
| Insulet Corporation | 1 | $21.44 | |
| GlaxoSmithKline, LLC. | 1 | $18.87 | |
| Janssen Pharmaceuticals, INC | 1 | $16.96 | |
| Corcept Therapeutics | 1 | $14.03 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
813
Patients
413
Total drug cost
$8,765
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 124 | 68 | $1,487 |
| Lisinopril | Generic | 87 | 40 | $603 |
| Losartan Potassium | Generic | 86 | 45 | $917 |
| Amlodipine Besylate | Generic | 80 | 43 | $638 |
| Levothyroxine Sodium | Generic | 74 | 39 | $1,024 |
| Metformin Hcl | Generic | 55 | 28 | $340 |
| Trazodone Hcl | Generic | 47 | 20 | $655 |
| Rosuvastatin Calcium | Generic | 46 | 29 | $689 |
| Hydrochlorothiazide | Generic | 38 | 20 | $160 |
| Pravastatin Sodium | Generic | 33 | 18 | $459 |
Hospital affiliations
Frequently asked questions
What is Dr. John Lammert's medical specialty?
Dr. John Lammert practices Internal Medicine Physician in Woodstock, GA.
Where does Dr. John Lammert practice?
Dr. John Lammert practices at 900 Towne Lake Pkwy Ste 210, Woodstock, GA 301891603. Office phone: 7705922300.
What is Dr. John Lammert's NPI?
Dr. John Lammert's National Provider Identifier (NPI) is 1699727909, issued by NPPES.
Does Dr. John Lammert accept Medicare assignment?
Yes. Dr. John Lammert accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Lammert commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214); Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (HCPCS G0439). Source: CMS Medicare Physician & Other Practitioners file.