Independent US Healthcare Provider Directory & Public Medical Database
Active NPI 1437736014 Individual Practitioner Female Practitioner

Dr. Marlee Diana Thomas , DO

Emergency Medicine • Springfield, MA

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Marlee Thomas, DO is a certified Emergency Medicine practicing in Springfield, MA. With approximately 5 years of clinical experience since completing medical education in 2021, Dr. Thomas delivers high-quality medical care to the local community at 759 CHESTNUT ST # S6538.

Dr. Thomas is affiliated with Baystate Medical Practices Inc and accepts Medicare assignment.

Frequently performed procedures and clinical services include routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only, emergency department visit for life threatening or functioning severity. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

759 Chestnut St # S6538

Springfield, MA 011071619

Telephone 4137943233
Fax 4137949060

Medicare Profile & Education

Medical School

Other

Graduation Year

2021

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Emergency Medicine in Springfield, MA

Experienced Practitioner (5-10 Yrs)
Practitioner Clinical Experience
5 Yrs -8.8 yrs vs City Avg
City Avg: 13.8 Yrs
State Avg: 24.2 Yrs
Regional Practice Density
123 Specialists

Practicing in Springfield, MA (1875 Statewide)

Telehealth Adoption Rate
1.6% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
92.1% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Thomas (5 Years) 5 Yrs
Springfield Specialty Average (13.8 Years) 13.8 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)
HCPCS Code & Description Services Patients Submitted Charge Medicare Allowed
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only
24 20 $104.00 $7.68
99285 Emergency department visit for life threatening or functioning severity
24 24 $2110.42 $168.28

Medical Specialties & State Licenses

CMS Verified: 2025-11-17
Emergency Medicine Primary Specialty

NUCC Taxonomy Code: 207P00000X

State License MA 1022823

An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.

Emergency Medicine

NUCC Taxonomy Code: 207P00000X

State License OH 34.016548

An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.

Hospital & Practice Group Affiliations

Baystate Medical Practices Inc

759 Chestnut St, Springfield, MA 011071619

Phone: 4137948121

Secondary Practice Locations

115 W Silver St

Westfield, MA 010853678

Phone: 4135710000

5100 W Broad St

Columbus, OH 432281607

Phone: 6145441000

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

40 Associated Practitioners
Dr. Bryanne Macdonald , MD

Emergency Medicine

NPI 1013477702

Doctor of Medicine (M.D.)

Dr. Marisa Siegel , MD

Emergency Medicine

NPI 1013607894

Doctor of Medicine (M.D.)

Dr. Matthew Opacic , MD

Emergency Medicine

NPI 1023285517

Doctor of Medicine (M.D.)

NPI 1033157920

Doctor of Medicine (M.D.)

NPI 1033352034

Doctor of Medicine (M.D.)

Marie Boutin , NP

Nurse Practitioner - Acute Care

NPI 1043572472

Nurse Practitioner

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

16 Historical Events
📍
Updated Practice Location November 17, 2025

Registered at 759 CHESTNUT ST # S6538, SPRINGFIELD, MA 011071619 (Tel: 4137943233)

📍
Updated Business Mailing Address November 17, 2025

Registered at 280 CHESTNUT ST FL 2, SPRINGFIELD, MA 011991001 (Tel: 4137945700)

📍
Updated Practice Location July 28, 2025

Registered at 725 CHESTNUT ST, SPRINGFIELD, MA 011991221 (Tel: 4137944146)

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) July 28, 2025

Emergency Medicine (License #34.016548 in OH)

📍
Updated Practice Location June 15, 2025

Registered at 5100 W BROAD ST, COLUMBUS, OH 432281607 (Tel: 6145441000)

📍
Updated Business Mailing Address June 15, 2025

Registered at 65 EISENHOWER ST, UNION, MO 630842008 (Tel: 6365841483)

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) June 15, 2025

Emergency Medicine (License #1022823 in MA)

📍
Updated Practice Location August 30, 2023

Registered at 3535 SOUTHERN BLVD, KETTERING, OH 454291221 (Tel: 9373958166)

📍
Updated Business Mailing Address August 30, 2023

Registered at 3131 NEWMARK DR STE 220, MIAMISBURG, OH 453425400 (Tel: 9374388910)

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) August 30, 2023

Emergency Medicine (License #34.016548 in OH)

NPI Profile Active March 28, 2021

NPI status registered as active in NPPES database

📍
Updated Practice Location March 28, 2021

Registered at 5100 W BROAD ST, COLUMBUS, OH 432281607 (Tel: 6145441000)

📍
Updated Business Mailing Address March 28, 2021

Registered at 65 EISENHOWER ST, UNION, MO 630842008 (Tel: 6365841483)

👤
Provider Name / Credentials Updated March 28, 2021

Recorded as MARLEE THOMAS, DO

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) March 28, 2021

Student in an Organized Health Care Education/Training Program

🟢
Initial NPI Registration & Enumeration March 28, 2021

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1437736014
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: March 28, 2021
Last Update: November 17, 2025
Sole Proprietor: No

Mailing Address

280 Chestnut St Fl 2

Springfield, MA 011991001

Phone: 4137945700

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).
⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.