Doctor profile · Federal record
Dr. Lawrence Gassner, MD
Internal Medicine Physician (CMS: Internal Medicine) · Phoenix, AZ
- NPI 1558379461
- Accepts Medicare
- MIPS 82.8 / 100 · 2023
- 38 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
18404 N Tatum Blvd, Ste 205
Phoenix, AZ 850321509
(602) 971-5500
fax (602) 944-0504
Credentials & registration
- NPI registered
- August 2006 — 20 yrs on file
- Profile last updated
- March 22, 2011
- Year of graduation
- 1988 — 38 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Arizona #19150
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1558379461. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
591
Distinct HCPCS
5
Medicare allowed
$61,789
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 218 | 116 | $126 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 171 | 171 | $128 | |
G0008 |
Administration of influenza virus vaccine | 70 | 68 | $28 | |
90662 |
Influenza vaccine split virus, preservative free | 68 | 66 | $72 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 64 | 52 | $89 |
In context: peer comparison
Among 171 peers in Phoenix Internal Medicine Physician, average services per provider: 159. This provider delivers 3.7× the peer median.Open Payments
Industry payments received
All-time total
$466
Transactions
25
Manufacturers
7
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| AstraZeneca Pharmaceuticals Lp | 11 | $178.77 | |
| Novartis Pharmaceuticals Corporation | 4 | $98.25 | |
| Amgen INC. | 5 | $97.86 | |
| Lilly USA, LLC | 2 | $33.76 | |
| Abbott Laboratories | 1 | $23.59 | |
| Takeda Pharmaceuticals U.S.A., INC. | 1 | $19.18 | |
| GlaxoSmithKline, LLC. | 1 | $14.34 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,602
Patients
467
Total drug cost
$83,421
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Rosuvastatin Calcium | Generic | 231 | 67 | $4,674 |
| Levothyroxine Sodium | Generic | 221 | 56 | $3,089 |
| Atorvastatin Calcium | Generic | 180 | 54 | $2,441 |
| Amlodipine Besylate | Generic | 141 | 42 | $1,238 |
| Lisinopril | Generic | 120 | 34 | $1,449 |
| Metoprolol Succinate | Generic | 101 | 30 | $1,772 |
| Metformin Hcl | Generic | 95 | 26 | $774 |
| Tamsulosin Hcl | Generic | 91 | 33 | $2,022 |
| Losartan Potassium | Generic | 80 | 23 | $1,071 |
| Alprazolam | Generic | 73 | 19 | $309 |
Frequently asked questions
What is Dr. Lawrence Gassner's medical specialty?
Dr. Lawrence Gassner practices Internal Medicine Physician in Phoenix, AZ.
Where does Dr. Lawrence Gassner practice?
Dr. Lawrence Gassner practices at 18404 N Tatum Blvd, Phoenix, AZ 850321509. Office phone: 6029715500.
What is Dr. Lawrence Gassner's NPI?
Dr. Lawrence Gassner's National Provider Identifier (NPI) is 1558379461, issued by NPPES.
Does Dr. Lawrence Gassner accept Medicare assignment?
Yes. Dr. Lawrence Gassner accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Lawrence Gassner commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (HCPCS G0439); Administration of influenza virus vaccine (HCPCS G0008). Source: CMS Medicare Physician & Other Practitioners file.