LARISSA ANN THOMAS M.D.
NPI 1720344393
Family Medicine in La Grande, OR

Q: What is Larissa Thomas's NPI number?

The NPI number for Larissa Thomas is 1720344393. It was assigned to this individual provider in the NPPES registry on April 7, 2012.

Q: What is Larissa Thomas's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Q: When was this NPI record last updated?

The NPPES record for Larissa Thomas was last updated on December 30, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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 April 07, 2012PECOS EnrolledAccepts Medicare Assignment

2011 4TH ST, LA GRANDE, OR 97850(541) 963-4139(541) 429-6612 Get Directions Write a Review

NPPES record last updated: December 30, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Dec 30, 2025, Jan 12, 2023, Dec 16, 2015 (3 updates tracked since 2015).

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About Larissa Ann Thomas M.d. NPPES

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

LARISSA ANN THOMAS M.D. (NPI 1720344393) is an individual family medicine provider in La Grande, Oregon, licensed in Oregon (MD168475) and active in the NPI registry since April 2012. She is enrolled in Medicare PECOS, is affiliated with St Luke's Regional Medical Center, and is a graduate of Tulane University School Of Medicine (2012).

NPPES Registry Identity

NPI1720344393

Entity TypeIndividualFemale

Primary Taxonomy207Q00000X

Provider Legal NameLARISSA ANN THOMASCredential: M.D.

Location Address2011 4TH STLa Grande, OR 97850-2511

Mailing AddressPo Box 1517Pendleton, OR 97801-0410 · (877) 708-1119 · Fax (541) 278-8349

Phone(541) 963-4139

Fax(541) 429-6612

Sole ProprietorNo

Medical School CMSTulane University School Of MedicineGraduated 2012

Enumeration DateApril 7, 2012

Last NPPES UpdateDecember 30, 20253 updates tracked since enumeration

NPPES CertifiedDecember 30, 2025

✔ NPI 1720344393 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207Q00000X

License✔ Licensed in OR · MD168475

Definition

Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.

2011 4TH ST, La Grande, OR 97850

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Other Identifiers 2

OtherR184141Medicare Ptan Part A

OtherR184162Medicare Ptan - Part B

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include BridgeSpan Health Company, Moda Health Plan, Inc., PacificSource Health Plans and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Larissa Ann Thomas 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 ID7810142544

PECOS Enrollment IDI20151029002280

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.

Areas of Expertise CMS Part B claims 3

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.

Hemoglobin a1c level 83036

Hemoglobin A1c (HbA1c) is a test that measures your average blood sugar level over the past 2-3 months. It's used to monitor how well diabetes is being controlled. High levels may indicate that your diabetes treatment plan needs adjustment.

60 services37 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.

30 services16 patients

Automated urinalysis test 81003

An automated urinalysis test is a routine examination that checks your urine for various substances. It can help identify potential health issues such as kidney problems or diabetes. The test uses a machine to analyze a small urine sample, providing quick and accurate results.

18 services17 patients

Hospital Affiliations CMS Care Compare 3

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

St Luke's Regional Medical Center

Acute Care Hospitals · Boise, ID

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number130006

Location190 East Bannock StreetBoise, ID 83712 · Ada County

Emergency services Birthing friendly

St. Alphonsus Medical Center - Baker City

Critical Access Hospitals · Baker City, OR

2/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number381315

Location3325 Pocahontas RoadBaker City, OR 97814 · Baker County

Emergency services

Grande Ronde Hospital

Critical Access Hospitals · La Grande, OR

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number381321

Location900 Sunset DriveLa Grande, OR 97850 · Union County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 97850 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

$84.82 typical visit price

range $54.96 – $166.64

Typical copayment $21.20 (range $13.74 – $41.66)

Most-billed visit code 99203

Established Patient

$97.16 typical visit price

range $17.68 – $136.19

Typical copayment $24.29 (range $4.42 – $34.04)

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 2

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

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253

DME-Other DME · category DE017N

5 suppliers11 claims34 services$7.14 avg. paid by Medicare

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390

DME-Oxygen and Supplies · category DC002N

1 supplier24 claims24 services$111.67 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 10

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

MS. BONNIE MARIE DITTMANN PA-C

Physician Assistant