PETER WALSH DO
NPI 1255372736
Internal Medicine - Gastroenterology in Bozeman, MT

Q: What is Peter Walsh's NPI number?

The NPI number for Peter Walsh is 1255372736. It was assigned to this individual provider in the NPPES registry on June 8, 2006.

Q: What is Peter Walsh's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Q: When was this NPI record last updated?

The NPPES record for Peter Walsh was last updated on April 10, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 months 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.

Active since June 08, 2006PECOS EnrolledAccepts Medicare Assignment

80.8/100

CMS Quality Rating

875 S COTTONWOOD RD STE 200, BOZEMAN, MT 59718(406) 414-5336(406) 414-5337 Get Directions Write a Review

NPPES record last updated: April 10, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Apr 10, 2025, Jul 27, 2021, Mar 17, 2020 (3 updates tracked since 2020).

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About Peter Walsh Do NPPES

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

PETER WALSH DO (NPI 1255372736) is an individual gastroenterology provider in Bozeman, Montana, licensed in Montana (59075) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Bozeman Health Deaconess Hospital, and is a graduate of Michigan State University College Of Osteopathic Medicine (1985).

NPPES Registry Identity

NPI1255372736

Entity TypeIndividualMale

Primary Taxonomy207RG0100X

Provider Legal NamePETER WALSHCredential: DO

Location Address875 S COTTONWOOD RD STE 200Bozeman, MT 59718-4208

Mailing Address915 Highland Blvd, Attn Pfs CredentialingBozeman, MT 59715-6902 · (406) 414-5000

Phone(406) 414-5336

Fax(406) 414-5337

Sole ProprietorNo

Medical School CMSMichigan State University College Of Osteopathic MedicineGraduated 1985

Enumeration DateJune 8, 2006

Last NPPES UpdateApril 10, 20253 updates tracked since enumeration

NPPES CertifiedApril 10, 2025

✔ NPI 1255372736 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

License✔ Licensed in MT · 59075

Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

875 S COTTONWOOD RD STE 200, Bozeman, MT 59718

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Other Identifiers 1

Medicaid1255372736MT

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

Peter Walsh Do 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 ID9537050596

PECOS Enrollment IDI20171201000049

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

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

Bozeman Health Deaconess Hospital

4.1 mi

Emergency Medicine

915 HIGHLAND BLVD
Bozeman, MT 59715

Reassigned Medicare billing, Montana enrollment
402 clinicians in this Medicare group

NPI 1437529112 (406) 414-5000

Bozeman Health Big Sky Medical Center, LLC

30 mi

Family Medicine

334 TOWN CENTER AVENUE
Big Sky, MT 59716

Reassigned Medicare billing, Montana enrollment
99 clinicians in this Medicare group

NPI 1740659952 (406) 995-6995

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 13

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.

Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385

This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.

214 services209 patients

Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239

This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.

110 services109 patients

Biopsy of large bowel using a flexible endoscope 45380

A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.

105 services104 patients

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.

64 services57 patients

Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk G0121

Colorectal cancer screening, such as a colonoscopy, is a preventive measure to detect early signs of cancer in the large intestine. For individuals not at high risk, it's typically recommended at age 50. A small, flexible tube with a camera is used to examine your colon. It's a safe, effective way to catch issues early.

50 services50 patients

Injection beneath lining of large bowel using a flexible endoscope 45381

This procedure involves a flexible tube, called an endoscope, being inserted into the large bowel. A small needle is then passed through the tube to inject medication under the bowel lining. This is typically done to treat inflammation or bleeding.

41 services40 patients

Colorectal cancer screening; colonoscopy on individual at high risk G0105

Colorectal cancer screening, specifically a colonoscopy, is a preventive measure for those at high risk. A thin, flexible tube with a camera inspects the colon to spot any abnormal growths. This test helps detect potential issues early, enhancing the effectiveness of treatment.

40 services40 patients

Balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm 43249

This procedure involves using a flexible tube with a camera, called an endoscope, to gently expand narrowed areas in your esophagus, stomach, or upper small bowel. A small balloon is inflated, making it easier for food and liquid to pass through. It's safe and effective.

29 services28 patients

Diagnostic exam of large bowel using a flexible endoscope 45378

This procedure, known as a colonoscopy, involves using a flexible tube with a light and camera to examine the large intestine. It helps detect any abnormalities such as polyps or inflammation. It's a standard procedure to ensure gut health.

20 services20 patients

Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43235

This procedure, known as an upper endoscopy, involves inserting a thin, flexible tube with a camera down the throat to examine the esophagus, stomach, and upper small bowel. It helps diagnose conditions like ulcers or inflammation.

19 services18 patients

Insertion of guide wire with dilation of esophagus using a flexible endoscope 43248

This is a procedure where a thin tube, called an endoscope, is gently passed through your mouth into your esophagus. A guide wire is then inserted to help widen any narrow areas. This helps improve swallowing and reduce discomfort.

18 services18 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

16 services15 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.

15 services14 patients

Hospital Affiliations CMS Care Compare 4

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

Bozeman Health Deaconess Hospital

Acute Care Hospitals · Bozeman, MT

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number270057

Location915 Highland Blvd Suite 3310Bozeman, MT 59715 · Gallatin County

Emergency services Birthing friendly

Livingston Healthcare

Critical Access Hospitals · Livingston, MT

3/5 CMS rating

OwnershipPhysician

CMS Certification Number271317

Location320 Alpenglow LaneLivingston, MT 59047 · Park County

Emergency services

Madison Valley Medical Center

Critical Access Hospitals · Ennis, MT

OwnershipVoluntary non-profit - Private

CMS Certification Number271329

Location305 N MainEnnis, MT 59729 · Madison County

Emergency services

Big Sky Medical Center

Critical Access Hospitals · Big Sky, MT

OwnershipVoluntary non-profit - Private

CMS Certification Number271389

Location334 Town Center AveBig Sky, MT 59716 · Gallatin County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 59718 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

$130.52 typical visit price

range $56.81 – $172.26

Typical copayment $32.63 (range $14.20 – $43.06)

Most-billed visit code 99204

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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

80.8/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

88.76

Promoting Interoperability

Improvement Activities

Cost

58.08

Other Providers at the Same Location NPPES 8

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

ANDREW HERMAN M.D.

Internal Medicine (Gastroenterology)