Active NPI 1902873409 Individual Practitioner Male Practitioner

Dr. Mark J Brenner , MD

Radiology - Diagnostic Radiology • Worcester, MA

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Mark Brenner, MD is a certified Radiology - Diagnostic Radiology practicing in Worcester, MA. With approximately 45 years of clinical experience since graduating from Tufts University School Of Medicine in 1981, Dr. Brenner delivers high-quality medical care to the local community at 1 EATON PL STE 100.

Dr. Brenner maintains professional affiliations with The Monroe Clinic, Inc., Saint Vincent Physician Services Inc and accepts Medicare assignment.

Frequently performed procedures and clinical services include stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy, ct guidance for insertion of radiation therapy fields, radiation treatment management, 5 treatments. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

1 Eaton Pl Ste 100

Worcester, MA 01608

Telephone 5083636881

Fax 5083637170

Associated Practice Facility / Clinic

🏢 Umass Memorial Medical Group Inc Facility NPI 1760445373

Medicare Profile & Education

Medical School

Tufts University School Of Medicine

Graduation Year

1981

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Radiology - Diagnostic Radiology in Worcester, MA

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

45 Yrs +21.9 yrs vs City Avg

City Avg: 23.1 Yrs

State Avg: 30.7 Yrs

Regional Practice Density

165 Specialists

Practicing in Worcester, MA (1724 Statewide)

Telehealth Adoption Rate

0.6% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

64.0% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Brenner (45 Years) 45 Yrs

Worcester Specialty Average (23.1 Years) 23.1 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
G6002 Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy	332	20	$58.00	$20.45
77014 Ct guidance for insertion of radiation therapy fields	202	31	$124.00	$43.75
77427 Radiation treatment management, 5 treatments	161	38	$520.00	$184.71
77300 Calculation of radiation therapy dose	90	38	$91.00	$32.54
77334 Design and construction of complex radiation treatment device	51	24	$168.00	$60.33
77263 Complex radiation therapy planning	34	31	$464.00	$167.18
77338 Design and construction of radiation treatment device for high precision radiation therapy	33	18	$622.00	$225.33
77290 Obtaining data needed to develop the optimal radiation treatment, 3 or more treatment areas or any number of treatment areas where special treatment is involved	29	26	$227.00	$82.10
77280 Obtaining data needed to develop the optimal radiation treatment, 1 treatment area	28	20	$103.00	$37.55
77332 Design and construction of simple radiation treatment device	25	24	$73.00	$23.80
77295 3d radiation therapy planning	24	20	$622.00	$224.64
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	18	18	$485.00	$178.77
77301 Management of modulation radiotherapy planning	18	18	$1155.00	$419.22
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	17	17	$101.00	$35.03
77470 Special radiation treatment procedure	15	14	$294.00	$106.41
99213 Established patient office or other outpatient visit, typically 15 minutes	13	12	$167.00	$65.45
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	13	13	$385.00	$131.97

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
G6002 Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy	299	21	$58.00	$20.91
77014 Ct guidance for insertion of radiation therapy fields	135	26	$124.00	$44.28
77427 Radiation treatment management, 5 treatments	110	30	$520.00	$194.82
77300 Calculation of radiation therapy dose	69	27	$91.00	$33.06
77334 Design and construction of complex radiation treatment device	43	19	$168.00	$61.51
99213 Established patient office or other outpatient visit, typically 15 minutes	36	31	$167.00	$66.60
77263 Complex radiation therapy planning	25	21	$464.00	$171.56
77280 Obtaining data needed to develop the optimal radiation treatment, 1 treatment area	23	17	$103.00	$38.75
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	22	22	$385.00	$129.18
77338 Design and construction of radiation treatment device for high precision radiation therapy	22	16	$622.00	$219.56
77290 Obtaining data needed to develop the optimal radiation treatment, 3 or more treatment areas or any number of treatment areas where special treatment is involved	21	18	$227.00	$80.08
77301 Management of modulation radiotherapy planning	17	16	$1155.00	$403.53
77333 Design and construction of intermediate radiation treatment device	17	15	$112.00	$40.45

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
G6002 Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy	323	25	$54.86	$20.91
77300 Calculation of radiation therapy dose	158	28	$86.39	$33.62
77427 Radiation treatment management, 5 treatments	122	32	$490.39	$196.45
77334 Design and construction of complex radiation treatment device	110	28	$159.22	$62.30
77014 Ct guidance for insertion of radiation therapy fields	99	16	$118.44	$46.28
77280 Obtaining data needed to develop the optimal radiation treatment, 1 treatment area	56	38	$96.25	$39.28
99213 Established patient office or other outpatient visit, typically 15 minutes	51	48	$155.20	$68.45
77263 Complex radiation therapy planning	33	30	$441.58	$173.37
77290 Obtaining data needed to develop the optimal radiation treatment, 3 or more treatment areas or any number of treatment areas where special treatment is involved	29	24	$215.21	$85.24
77333 Design and construction of intermediate radiation treatment device	23	22	$105.74	$41.01
77295 3d radiation therapy planning	21	19	$591.05	$232.69
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	21	21	$368.76	$133.48
77470 Special radiation treatment procedure	18	16	$279.33	$110.69
77338 Design and construction of radiation treatment device for high precision radiation therapy	15	11	$595.33	$232.60
77301 Management of modulation radiotherapy planning	11	11	$1104.82	$432.10

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
G6002 Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy	724	43	$53.00	$21.29
77300 Calculation of radiation therapy dose	237	46	$83.00	$33.89
77427 Radiation treatment management, 5 treatments	196	54	$478.00	$197.59
77014 Ct guidance for insertion of radiation therapy fields	172	30	$114.00	$46.78
77334 Design and construction of complex radiation treatment device	148	37	$154.00	$62.71
77280 Obtaining data needed to develop the optimal radiation treatment, 1 treatment area	80	47	$94.00	$39.56
77263 Complex radiation therapy planning	41	37	$427.00	$174.78
99213 Established patient office or other outpatient visit, typically 15 minutes	36	35	$153.00	$69.84
77338 Design and construction of radiation treatment device for high precision radiation therapy	34	24	$572.00	$233.88
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	33	33	$354.00	$140.93
77290 Obtaining data needed to develop the optimal radiation treatment, 3 or more treatment areas or any number of treatment areas where special treatment is involved	32	26	$209.00	$85.08
77333 Design and construction of intermediate radiation treatment device	31	27	$103.00	$41.35
77295 3d radiation therapy planning	26	24	$572.00	$233.88
77301 Management of modulation radiotherapy planning	22	21	$1063.00	$436.06
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	18	18	$93.00	$37.27
77470 Special radiation treatment procedure	17	14	$270.00	$111.60
77307 Radiation therapy plan	11	11	$401.00	$158.88

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
G6002 Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy	873	53	$53.00	$21.55
77300 Calculation of radiation therapy dose	247	46	$83.00	$34.50
77427 Radiation treatment management, 5 treatments	229	56	$478.00	$198.27
77334 Design and construction of complex radiation treatment device	187	52	$154.00	$62.87
77014 Ct guidance for insertion of radiation therapy fields	143	25	$114.00	$47.51
77280 Obtaining data needed to develop the optimal radiation treatment, 1 treatment area	90	62	$94.00	$39.25
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	57	57	$354.00	$133.52
77263 Complex radiation therapy planning	55	50	$427.00	$175.78
77290 Obtaining data needed to develop the optimal radiation treatment, 3 or more treatment areas or any number of treatment areas where special treatment is involved	49	41	$209.00	$85.78
77333 Design and construction of intermediate radiation treatment device	38	33	$103.00	$41.86
77470 Special radiation treatment procedure	33	28	$270.00	$113.91
77295 3d radiation therapy planning	29	25	$572.00	$238.93
99213 Established patient office or other outpatient visit, typically 15 minutes	29	28	$153.00	$53.83
77338 Design and construction of radiation treatment device for high precision radiation therapy	28	19	$572.00	$238.97
77301 Management of modulation radiotherapy planning	20	19	$1063.00	$445.10
77307 Radiation therapy plan	18	16	$401.00	$152.64
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	18	18	$93.00	$27.12
99441 Telephone medical discussion with physician, 5-10 minutes	16	16	$89.44	$27.09
77261 Simple radiation therapy planning	12	11	$183.00	$75.54
77435 Management of cranial lesion surgery using radiation over multiple sessions	12	12	$1622.00	$681.27

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
G6002 Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy	789	44	$53.00	$21.67
77300 Calculation of radiation therapy dose	391	60	$83.00	$34.16
77427 Radiation treatment management, 5 treatments	232	60	$478.00	$197.53
77334 Design and construction of complex radiation treatment device	193	60	$154.00	$63.16
77014 Ct guidance for insertion of radiation therapy fields	166	28	$114.00	$46.63
77280 Obtaining data needed to develop the optimal radiation treatment, 1 treatment area	98	70	$94.00	$38.95
77263 Complex radiation therapy planning	76	67	$427.00	$175.77
77290 Obtaining data needed to develop the optimal radiation treatment, 3 or more treatment areas or any number of treatment areas where special treatment is involved	61	51	$209.00	$85.55
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	54	54	$354.00	$133.79
77333 Design and construction of intermediate radiation treatment device	51	45	$103.00	$41.15
99213 Established patient office or other outpatient visit, typically 15 minutes	47	43	$153.00	$53.02
77295 3d radiation therapy planning	36	34	$572.00	$235.06
77470 Special radiation treatment procedure	36	30	$270.00	$111.25
77338 Design and construction of radiation treatment device for high precision radiation therapy	35	25	$572.00	$234.98
77301 Management of modulation radiotherapy planning	26	25	$1063.00	$437.64
77435 Management of cranial lesion surgery using radiation over multiple sessions	19	19	$1622.00	$667.57
77307 Radiation therapy plan	17	17	$401.00	$158.75
77261 Simple radiation therapy planning	11	11	$183.00	$74.85

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
G6002 Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy	586	34	$51.00	$21.26
77300 Calculation of radiation therapy dose	276	55	$107.00	$33.73
77334 Design and construction of complex radiation treatment device	261	74	$230.00	$62.71
77427 Radiation treatment management, 5 treatments	245	64	$671.00	$195.04
77280 Obtaining data needed to develop the optimal radiation treatment, 1 treatment area	108	72	$128.00	$38.15
77014 Ct guidance for insertion of radiation therapy fields	85	14	$116.00	$46.20
77290 Obtaining data needed to develop the optimal radiation treatment, 3 or more treatment areas or any number of treatment areas where special treatment is involved	72	60	$296.00	$85.08
77263 Complex radiation therapy planning	70	66	$598.00	$173.92
99213 Established patient office or other outpatient visit, typically 15 minutes	68	64	$203.00	$53.26
77333 Design and construction of intermediate radiation treatment device	61	54	$156.00	$40.70
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	51	51	$498.00	$134.33
77295 3d radiation therapy planning	42	41	$861.00	$232.83
77307 Radiation therapy plan	37	32	$193.00	$156.92
77470 Special radiation treatment procedure	27	24	$365.00	$109.99
77338 Design and construction of radiation treatment device for high precision radiation therapy	24	16	$804.00	$232.83
77301 Management of modulation radiotherapy planning	16	15	$1544.00	$433.01
77261 Simple radiation therapy planning	15	15	$203.00	$74.56
77435 Management of cranial lesion surgery using radiation over multiple sessions	11	11	$2348.00	$661.16
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	11	11	$324.00	$79.63

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
G6002 Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy	379	29	$51.00	$21.03
77300 Calculation of radiation therapy dose	189	34	$107.00	$33.38
77427 Radiation treatment management, 5 treatments	166	39	$671.00	$190.98
77334 Design and construction of complex radiation treatment device	147	39	$230.00	$61.33
77280 Obtaining data needed to develop the optimal radiation treatment, 1 treatment area	70	45	$128.00	$37.38
77014 Ct guidance for insertion of radiation therapy fields	69	11	$116.00	$45.35
99213 Established patient office or other outpatient visit, typically 15 minutes	46	40	$203.00	$52.18
77290 Obtaining data needed to develop the optimal radiation treatment, 3 or more treatment areas or any number of treatment areas where special treatment is involved	38	29	$296.00	$83.45
77263 Complex radiation therapy planning	38	34	$598.00	$170.40
77333 Design and construction of intermediate radiation treatment device	29	26	$156.00	$39.94
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	24	24	$498.00	$132.49
77338 Design and construction of radiation treatment device for high precision radiation therapy	24	14	$804.00	$228.29
77307 Radiation therapy plan	22	18	$193.00	$154.64
77295 3d radiation therapy planning	20	19	$861.00	$228.29
77301 Management of modulation radiotherapy planning	16	12	$1544.00	$422.88

Medical Specialties & State Licenses

CMS Verified: 2026-05-26

Radiology - Diagnostic Radiology Primary Specialty

NUCC Taxonomy Code: 2085R0202X

State License MA 54099

A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.

Radiology - Radiation Oncology

NUCC Taxonomy Code: 2085R0001X

State License MD D0041640

A radiologist who deals with the therapeutic applications of radiant energy and its modifiers and the study and management of disease, especially malignant tumors.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

110085074A (MA)

Medicaid State Provider ID

168741700 (MD)

Commercial Insurance / Payer ID Railroad Medicare

920007556 (MD)

Commercial Insurance / Payer ID Rr Medicare

920004528 (MD)

Hospital & Practice Group Affiliations

The Monroe Clinic, Inc.

515 22nd Ave, Monroe, WI 535661569

Phone: 6083242000

Saint Vincent Physician Services Inc

123 Summer St, Worcester, MA 016081216

Secondary Practice Locations

275 Nichols Rd

Fitchburg, MA 014201919

Phone: 9783435151

20 Washington Sq

Worcester, MA 016044013

Phone: 5083636218

Practice Associates & Co-Workers

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

3 Associated Practitioners

Dr. Lakshmi Narayan Shanmugham , MD

Radiology - Radiation Oncology

NPI 1689723843

Doctor of Medicine (M.D.)

Dr. Isha Emhoff , MD

Surgery

NPI 1871528950

Doctor of Medicine (M.D.)

Tracey Hall , NP

Nurse Practitioner

NPI 1972572022

Nurse Practitioner

Career & Practice History Timeline

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

15 Historical Events

📍

Updated Business Mailing Address May 26, 2026

Registered at PO BOX 415348, BOSTON, MA 022415348 (Tel: 8002258885)

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) May 26, 2026

Radiology (License #54099 in MA)

📍

Updated Practice Location April 22, 2025

Registered at 1 EATON PL STE 100, WORCESTER, MA 01608 (Tel: 5083636881)

📍

Updated Business Mailing Address April 22, 2025

Registered at PO BOX 11760, BELFAST, ME 049154008 (Tel: 8884027256)

✅

NPI Profile Active May 11, 2017

NPI status registered as active in NPPES database

📍

Updated Practice Location May 11, 2017

Registered at 20 WASHINGTON SQ, WORCESTER, MA 016044013 (Tel: 5083636218)

📍

Updated Business Mailing Address May 11, 2017

Registered at 20 WASHINGTON SQ, WORCESTER, MA 016044013 (Tel: 5083636218)

👤

Provider Name / Credentials Updated May 11, 2017

Recorded as MARK BRENNER, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) May 11, 2017

Radiology (License #D0041640 in MD)

✅

NPI Profile Active December 02, 2015

NPI status registered as active in NPPES database

📍

Updated Practice Location December 02, 2015

Registered at 25 CROSSROADS DR, SUITE 110, OWINGS MILLS, MD 211175421 (Tel: 4109989993)

📍

Updated Business Mailing Address December 02, 2015

Registered at 20 WASHINGTON SQ, WORCESTER, MA 016044013 (Tel: 5083636218)

👤

Provider Name / Credentials Updated December 02, 2015

Recorded as MARK BRENNER, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) December 02, 2015

Radiology (License #D0041640 in MD)

🟢

Initial NPI Registration & Enumeration March 02, 2006

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: 1902873409

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: March 02, 2006

Last Update: May 26, 2026

Sole Proprietor: No

Update or Correct Profile

Mailing Address

Po Box 415348

Boston, MA 022415348

Phone: 8002258885

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.