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Dr. Larry F Thiesen , MD

Anesthesiology • Fall River, MA

Active NPI 1073513438 Individual Practitioner Male Practitioner Accepts Medicare assignment
Practice location in NPPES

363 Highland Ave
Fall River, MA 027203703

Call 5089737558 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

363 Highland Ave

Fall River, MA 027203703

Telephone 5089737558
Fax 5089737147
Organization at the Same NPPES Address or Phone
Charlton Anesthesia Group, Inc. Facility NPI 1972501740

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Other Listings in Public Data

CMS Doctors and Clinicians lists 1 group name: Southcoast Physicians Group Inc. See the list

Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.

Listings do not confirm current availability, employment or a shared ownership network.

Medicare Profile & Education

Source: CMS Doctors and Clinicians National Downloadable File

Graduation Year

1988

Medicare patients

77 people with Original Medicare in 2024

Different Original Medicare patients in 2024; counts below 11 are hidden; this does not show availability or quality.

Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.

Medicare-allowed amount

About $44,965 in 2024

The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.

What this does not show: Medicare-allowed amount

This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.

Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.

Paid by Medicare

About $36,390 in 2024

The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.

What this does not show: Paid by Medicare

This is not the clinician's income and not a measure of quality.

Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.

Industry payments (Open Payments)

Fewer than 11 payment records totaling $23.66 in 2023

Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.

These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.

General: payments not tied to research, such as meals, travel, consulting or speaking fees.

A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.

Source: CMS Open Payments, program year 2023.

Guide: How to read an Open Payments record

Years since graduation

38 years (graduated 1988)

CMS Doctors and Clinicians data list 1988 as the year this clinician finished professional school.

What this does not show: Years since graduation

It is not the number of years in practice, and more years does not mean better care.

Source: CMS Doctors and Clinicians National Downloadable File.

NPI first issued

2005

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Accepts Medicare assignment

CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

No telehealth indicator

CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Dr. Thiesen has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.

It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What Medicare enrollment (PECOS) means

Can order Medicare-covered services

CMS lists Dr. Thiesen as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.

What this does not show: Can order Medicare-covered services

It does not mean the clinician offers these services directly.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What ordering and referring status means

Compared with the same specialty in Fall River and Massachusetts

Billing and prescribing volume is not a quality rating.

Medicare Part B services

Fewer Medicare Part B services than 60% of clinicians listed under Anesthesiology in Fall River, MA (2024, 14 clinicians with data). Median for this group: 162. Middle half: 135 to 267.

Close to the middle for clinicians listed under Anesthesiology in Massachusetts (2024, 1,137 clinicians with data). Median for this group: 136. Middle half: 66 to 248.

Medicare-allowed amount

A higher Medicare-allowed amount than 95% of clinicians listed under Anesthesiology in Fall River, MA (2024, 14 clinicians with data). Median for this group: $19,897. Middle half: $9,776 to $31,355.

A higher Medicare-allowed amount than 85% of clinicians listed under Anesthesiology in Massachusetts (2024, 1,137 clinicians with data). Median for this group: $16,429. Middle half: $8,286 to $31,402.

Paid by Medicare

A higher Medicare payment amount than 95% of clinicians listed under Anesthesiology in Fall River, MA (2024, 14 clinicians with data). Median for this group: $15,250. Middle half: $8,047 to $24,597.

A higher Medicare payment amount than 85% of clinicians listed under Anesthesiology in Massachusetts (2024, 1,137 clinicians with data). Median for this group: $13,131. Middle half: $6,643 to $24,992.

28 active clinicians are listed under Anesthesiology with a practice address in Fall River, MA (2,090 in Massachusetts).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Fall River

0% of these 28 clinicians have the CMS telehealth indicator.

46.4% of these 28 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Open Payments (2023), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo · Report an error.

Pharma & Medical Device Financial Disclosures

Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments

Open Payments · Program Year 2023
Disclosure Year:

Program year 2023 (payments made January 1 – December 31, 2023): fewer than 11 records totaling $23.66.

Manufacturer Payment Nature Product Type Amount ($)
Galderma Laboratories, L.P.
Food and Beverage
In-kind items and services
— General $23.66

Source: CMS Open Payments, program year 2023, released June 30, 2026.

Performed Procedures & Service Volume

Services billed to Original Medicare Part B in 2024.

CMS Part B · Data Year 2024
Reporting Year:

CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017–2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.

HCPCS Code Services Patients Submitted Charge Medicare Allowed
00560 Anesthesia for procedure on heart and large blood vessels
54 54 $3003.24 $506.82
36620 Insertion of artery tube for blood sampling or infusion through skin
26 26 $143.85 $45.66
93503 Insertion of tube in pulmonary artery for monitoring
21 21 $285.10 $90.11
93312 Ultrasound of heart with probe in esophagus, with report
19 19 $350.95 $110.44
93325 Ultrasound of heart with color-depicted blood flow, rate and valve function
18 18 $10.00 $3.22
00567 Anesthesia for heart artery bypass grafting on heart-lung machine
15 15 $4899.53 $824.04

Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits

Submitted charges are billed amounts, not a price quote for your visit.

Specialties & License Numbers Reported to NPPES

Self-certified to NPPES: 2020-04-27
Anesthesiology Primary Specialty

NUCC Taxonomy Code: 207L00000X

License # reported to NPPES MA 209411

An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Massachusetts Board of Registration in Medicine.
Look Up on State Board Site

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid ID
0199290 (MA)

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - ANESTHESIOLOGY

Medicare Enrollment ID

I20100227000097

Enrollment State Jurisdiction

MA

PECOS Control ID

7315981529

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Eligible
Power Mobility Devices (PMD) Eligible

Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.

Medicare Group Practice Enrollments

Source: CMS Doctors and Clinicians National Downloadable File

Southcoast Physicians Group Inc

363 Highland Ave, Fall River, MA 027203703

Phone: 5089735919

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

5 listed
NPI 1902806342

Doctor of Medicine (M.D.)

Kolleen Deandrade , PA-C

Physician Assistant

NPI 1851596704

Physician Assistant (Certified)

Jessica Kerensky , PA

Physician Assistant - Surgical

NPI 1922382159

Physician Assistant

Ngoc Ly

Anesthesiology - Critical Care Medicine

NPI 1356735401
Mark Morosco , PA-C

Physician Assistant - Surgical

NPI 1922203777

Physician Assistant (Certified)

Career & Practice History

NPI enumerated July 28, 2005.

No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.

No reviews have been published yet. Leave a review.

NPI Administrative Meta

NPI Number: 1073513438
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: July 28, 2005
Last Update: April 27, 2020
Sole Proprietor: No

Other Anesthesiology Specialists in Fall River

All Anesthesiology Specialists in Fall River

More public profiles in Massachusetts

Directory navigation, in NPI number order.

Mailing Address

200 Mill Rd, Suite 180

Fairhaven, MA 027195252

Phone: 5089732000

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.