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DR. SIOBHAN P LYNCH M.D.
NPI 1457543340
Internal Medicine - Medical Oncology in Missoula, MT

Active since August 14, 2007PECOS EnrolledAccepts Medicare Assignment
2837 FORT MISSOULA RD, MISSOULA, MT 59804(406) 327-3911 Get Directions Write a Review

NPPES record last updated: May 17, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: May 17, 2023, Jun 26, 2018, Mar 17, 2018 and 2 more (5 updates tracked since 2016).

About Dr. Siobhan P Lynch M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. SIOBHAN P LYNCH M.D. (NPI 1457543340) is an individual medical oncology provider in Missoula, Montana, licensed in Montana (MED-PHYS-LIC-52620) and active in the NPI registry since August 2007. She is enrolled in Medicare PECOS, is affiliated with St. Patrick Hospital, and maintains a secondary practice location in Missoula.

NPPES Registry Identity

NPI1457543340
Entity TypeIndividualFemale
Primary Taxonomy207RX0202X
Provider Legal NameDR. SIOBHAN P LYNCHCredential: M.D.
Location Address2837 FORT MISSOULA RDMissoula, MT 59804-7408
Mailing Address2837 Fort Missoula RdMissoula, MT 59804-7408 · (406) 327-3911 · Fax (406) 549-2246
Phone(406) 327-3911
Sole ProprietorNo
Medical School CMSUniversity Of Texas Medical School At San AntonioGraduated 2005
Enumeration DateAugust 14, 2007
Last NPPES UpdateMay 17, 20235 updates tracked since enumeration
NPPES CertifiedMay 17, 2023
✔ NPI 1457543340 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Medical OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RX0202X
License✔ Licensed in MT · MED-PHYS-LIC-52620
Definition
An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.
2837 FORT MISSOULA RD, Missoula, MT 59804
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Secondary Practice Location 1

Location 1500 W Broadway StMissoula, MT 59802-4008 · Phone (406) 728-2539 · Fax (406) 329-5663

Other Identifiers 3

Medicaid1946956-05TX
Other8DH945Bcbs
Medicaid1946956-06TX

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Montana, Mountain Health CO-OP, PacificSource Health Plans and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Siobhan P Lynch M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5991879652
PECOS Enrollment IDI20170628002298
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Siobhan Lynch reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Rchp Billings - Missoula LLC
0.2 mi
Family Medicine
2827 FORT MISSOULA RD
Missoula, MT 59804
  • Reassigned Medicare billing, Montana enrollment
  • 192 clinicians in this Medicare group
NPI 1376946913 (406) 327-4620
Providence Health & Services Mt
1.1 mi
Obstetrics & Gynecology
1211 S RESERVE ST STE 101
Missoula, MT 59801
  • Reassigned Medicare billing, Montana enrollment
  • 325 clinicians in this Medicare group
NPI 1417198243 (406) 327-3057

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
534 services274 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
281 services118 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
56 services56 patients
Biopsy and aspiration of bone marrow sample for diagnosis 38222
A bone marrow biopsy and aspiration is a procedure where a small amount of bone marrow is removed for testing. It involves inserting a needle into a bone, typically the hip, to collect a sample. It can help diagnose various diseases and monitor treatment effectiveness.
13 services12 patients
Telephone medical discussion with physician, 21-30 minutes 99443
This service involves a 21-30 minute phone conversation with a physician. It's a chance for you to discuss your health concerns, symptoms or treatment plans. It's similar to an in-person consultation, but conducted over the phone for your convenience and safety.
13 services13 patients

Hospital Affiliations CMS Care Compare 4

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

St. Patrick Hospital

Acute Care Hospitals · Missoula, MT
5/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number270014
Location500 W BroadwayMissoula, MT 59806 · Missoula County
Emergency services Birthing friendly

Community Medical Center

Acute Care Hospitals · Missoula, MT
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number270023
Location2827 Fort Missoula RdMissoula, MT 59804 · Missoula County
Emergency services Birthing friendly

St Luke Community Hospital

Critical Access Hospitals · Ronan, MT
OwnershipVoluntary non-profit - Private
CMS Certification Number271325
Location107 6th Ave SWRonan, MT 59864 · Lake County
Emergency services

Bitterroot Health - Daly Hospital

Critical Access Hospitals · Hamilton, MT
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number271340
Location1200 Westwood DrHamilton, MT 59840 · Ravalli County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 59804 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$172.26 typical visit price
range $56.81 – $172.26
Typical copayment $43.06 (range $14.20 – $43.06)
Most-billed visit code 99205
Established Patient
$100.16 typical visit price
range $18.24 – $140.32
Typical copayment $25.04 (range $4.56 – $35.08)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 13

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Supplies for maintenance of non-insulin drug infusion catheter, per week (list drugs separately) A4221
DME-Other DME · category DE017N
1 supplier29 claims29 services$19.33 avg. paid by Medicare
Infusion supplies for external drug infusion pump, per cassette or bag (list drugs separately) A4222
DME-Medical/Surgical Supplies · category DA000N
1 supplier29 claims29 services$37.59 avg. paid by Medicare
Parenteral nutrition solution, not otherwise specified, 10 grams lipids B4185
Other-Enteral and Parenteral · category OB005N
1 supplier48 claims1,136 services$11.26 avg. paid by Medicare
Parenteral nutrition solution; compounded amino acid and carbohydrates with electrolytes, trace elements, and vitamins, including preparation, any strength, 52 to 73 grams of protein - premix B4193
Other-Enteral and Parenteral · category OB005N
1 supplier35 claims229 services$229.26 avg. paid by Medicare
Parenteral nutrition solution; compounded amino acid and carbohydrates with electrolytes, trace elements and vitamins, including preparation, any strength, 74 to 100 grams of protein - premix B4197
Other-Enteral and Parenteral · category OB005N
1 supplier13 claims91 services$282.90 avg. paid by Medicare
Parenteral nutrition supply kit; premix, per day B4220
Other-Enteral and Parenteral · category OB005N
1 supplier48 claims320 services$8.02 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

KATHRYN ANNA CHAPPELL NP
Nurse Practitioner (Family)
2837 FORT MISSOULA RD
MISSOULA, MT 59804
Missoula County (063) 273-9114

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Siobhan Lynch's NPI number?

The NPI number for Siobhan Lynch is 1457543340. It was assigned to this individual provider in the NPPES registry on August 14, 2007.

Where is Siobhan Lynch located?

Siobhan Lynch practices at 2837 Fort Missoula Rd, Missoula, MT 59804. The listed phone number is (406) 327-3911.

What is Siobhan Lynch's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.

Is Siobhan Lynch enrolled in Medicare?

Yes. Siobhan Lynch is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Siobhan Lynch's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Siobhan Lynch reassigns Medicare benefits to 2 organizations: Rchp Billings - Missoula LLC (Missoula, MT) and Providence Health & Services Mt (Missoula, MT). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Siobhan Lynch's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Siobhan Lynch accept?

Health plans from Blue Cross and Blue Shield of Montana, Mountain Health CO-OP, PacificSource Health Plans and Providence Health Plan list Siobhan Lynch as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Siobhan Lynch affiliated with any hospitals?

According to CMS data, Siobhan Lynch is affiliated with St. Patrick Hospital, Community Medical Center, St Luke Community Hospital and Bitterroot Health - Daly Hospital.

When was this NPI record last updated?

The NPPES record for Siobhan Lynch was last updated on May 17, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.