Doctor profile · Federal record
Dr. Timothy Lamaster, M. D.
Family Medicine Physician (CMS: Family Practice) · Duluth, MN
- NPI 1437138229
- Accepts Medicare
- 34 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
26 E Superior St, Suite 205
Duluth, MN 558022124
(218) 249-4300
fax (218) 249-4350 - Mailing address
-
440 Kenilworth Ave
Duluth, MN 558032110
Credentials & registration
- NPI registered
- January 2006 — 20 yrs on file
- Profile last updated
- August 19, 2010
- Year of graduation
- 1992 — 34 yrs since
- Specialty taxonomy
- 207Q00000X — NUCC code
- State license (1)
- Minnesota #36598
- Medicaid
- MN #637318600
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1437138229. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
338
Distinct HCPCS
3
Medicare allowed
$32,572
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 182 | 103 | $94 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 83 | 83 | $129 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 73 | 55 | $65 |
In context: peer comparison
Among 32 peers in Duluth Family Medicine Physician, average services per provider: 56. This provider delivers 6.0× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
2,945
Patients
777
Total drug cost
$58,397
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 437 | 123 | $9,350 |
| Losartan Potassium | Generic | 318 | 80 | $5,815 |
| Rosuvastatin Calcium | Generic | 285 | 78 | $8,965 |
| Amlodipine Besylate | Generic | 250 | 62 | $3,616 |
| Lisinopril | Generic | 213 | 57 | $2,780 |
| Simvastatin | Generic | 201 | 54 | $3,222 |
| Metoprolol Succinate | Generic | 191 | 53 | $5,618 |
| Omeprazole | Generic | 166 | 45 | $2,865 |
| Levothyroxine Sodium | Generic | 145 | 37 | $3,057 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 138 | 31 | $2,404 |
Hospital affiliations
Frequently asked questions
What is Dr. Timothy Lamaster's medical specialty?
Dr. Timothy Lamaster practices Family Medicine Physician in Duluth, MN.
Where does Dr. Timothy Lamaster practice?
Dr. Timothy Lamaster practices at 26 E Superior St, Duluth, MN 558022124. Office phone: 2182494300.
What is Dr. Timothy Lamaster's NPI?
Dr. Timothy Lamaster's National Provider Identifier (NPI) is 1437138229, issued by NPPES.
Does Dr. Timothy Lamaster accept Medicare assignment?
Yes. Dr. Timothy Lamaster accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Timothy Lamaster 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); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.