Doctor profile · Federal record

Dr. Siobhan Lynch, M.D.

Medical Oncology Physician (CMS: Hematology/Oncology) · Missoula, MT

  • NPI 1457543340
  • Accepts Medicare
  • 21 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
2837 Fort Missoula RD
Missoula, MT 598047408
(406) 327-3911
Additional location
500 W Broadway St
Missoula, MT 598024008
(406) 728-2539
fax (406) 329-5663

Credentials & registration

NPPES · NUCC
NPI registered
August 2007 — 19 yrs on file
Profile last updated
May 17, 2023
Year of graduation
2005 — 21 yrs since
Specialty taxonomy
207RX0202X — NUCC code
State license (1)
Montana #MED-PHYS-LIC-52620
Medicaid (2)
TX #1946956-05 · TX #1946956-06

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1457543340. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
943
Distinct HCPCS
4
Medicare allowed
$102,472
HCPCS Description Services Patients Avg allowed
99214 Established patient office or other outpatient visit, 30-39 minutes 717 307 $97
99215 Established patient office or other outpatient visit, 40-54 minutes 158 88 $142
99205 New patient office or other outpatient visit, 60-74 minutes 49 49 $180
99443 Telephone medical discussion with physician, 21-30 minutes 19 17 $86

In context: peer comparison

Among 1 peers in Missoula Medical Oncology Physician, average services per provider: 235. This provider delivers 4.0× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
740
Patients
193
Total drug cost
$419,066
Drug Type Claims Patients Total cost
Anastrozole Generic 205 55 $9,474
Tamoxifen Citrate Generic 112 34 $3,841
Acyclovir Generic 56 0 $905
Ondansetron Odt (Ondansetron) Brand 45 31 $929
Dexamethasone Generic 41 28 $1,239
Omeprazole Generic 33 0 $388
Gabapentin Generic 31 0 $420
Eliquis (Apixaban) Brand 30 0 $20,977
Letrozole Generic 30 0 $2,911
Prochlorperazine Maleate Generic 29 26 $385

Frequently asked questions

Auto-generated from federal data
What is Dr. Siobhan Lynch's medical specialty?
Dr. Siobhan Lynch practices Medical Oncology Physician in Missoula, MT.
Where does Dr. Siobhan Lynch practice?
Dr. Siobhan Lynch practices at 2837 Fort Missoula RD, Missoula, MT 598047408. Office phone: 4063273911.
What is Dr. Siobhan Lynch's NPI?
Dr. Siobhan Lynch's National Provider Identifier (NPI) is 1457543340, issued by NPPES.
Does Dr. Siobhan Lynch accept Medicare assignment?
Yes. Dr. Siobhan Lynch accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Siobhan Lynch commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99215); New patient office or other outpatient visit (HCPCS 99205). Source: CMS Medicare Physician & Other Practitioners file.