Active NPI 1346217155 Individual Practitioner Male Practitioner

Dr. John T Larossa , MD

Specialist • Newton, MA

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. John Larossa, MD is a certified Specialist practicing in Newton, MA. With approximately 53 years of clinical experience since graduating from Tufts University School Of Medicine in 1973, Dr. Larossa delivers high-quality medical care to the local community at 2000 WASHINGTON ST.

Dr. Larossa accepts Medicare assignment.

Frequently performed procedures and clinical services include established patient outpatient office visit, insertion of needle into vein for collection of blood sample, telephone medical discussion with physician. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

2000 Washington St
Suite 100

Newton, MA 024621650

Telephone 6172441311

Fax 6172442819

Associated Practice Facility / Clinic

🏢 Newton-Wellesley Urology, Pc Facility NPI 1114925104

Medicare Profile & Education

Medical School

Tufts University School Of Medicine

Graduation Year

1973

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Specialist in Newton, MA

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

53 Yrs +7.0 yrs vs City Avg

City Avg: 46.0 Yrs

State Avg: 37.9 Yrs

Regional Practice Density

16 Specialists

Practicing in Newton, MA (1181 Statewide)

Telehealth Adoption Rate

6.2% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

64.6% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Larossa (53 Years) 53 Yrs

Newton Specialty Average (46.0 Years) 46.0 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
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	648	339	$400.00	$139.55
36415 Insertion of needle into vein for collection of blood sample	645	347	$24.92	$8.65
99443 Telephone medical discussion with physician, 21-30 minutes	52	38	$400.00	$139.46
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	41	41	$500.00	$181.07

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	601	325	$400.00	$140.48
36415 Insertion of needle into vein for collection of blood sample	595	339	$14.73	$8.40
99443 Telephone medical discussion with physician, 21-30 minutes	120	95	$376.96	$140.28
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	45	45	$493.33	$182.03

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	710	415	$381.03	$143.11
36415 Insertion of needle into vein for collection of blood sample	703	427	$11.00	$2.97
99443 Telephone medical discussion with physician, 21-30 minutes	122	103	$335.20	$142.52
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	104	104	$200.00	$146.30
93000 Routine ekg using at least 12 leads including interpretation and report	79	79	$55.00	$16.21
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	76	76	$450.00	$185.77
99213 Established patient office or other outpatient visit, typically 15 minutes	44	20	$248.25	$101.77
G0008 Administration of influenza virus vaccine	30	30	$68.00	$33.68
90694 Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage	29	29	$175.00	$70.25

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	749	398	$298.00	$145.64
36415 Insertion of needle into vein for collection of blood sample	716	411	$11.00	$3.00
93000 Routine ekg using at least 12 leads including interpretation and report	143	137	$55.00	$16.88
99443 Telephone medical discussion with physician, 21-30 minutes	129	91	$240.00	$145.37
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	112	112	$200.00	$148.81
99441 Telephone medical discussion with physician, 5-10 minutes	73	63	$140.00	$64.03
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	72	72	$450.00	$187.56
G0008 Administration of influenza virus vaccine	47	47	$68.00	$19.53
90694 Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage	47	47	$135.00	$66.43
99213 Established patient office or other outpatient visit, typically 15 minutes	45	21	$202.00	$102.99

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	715	392	$298.00	$121.23
36415 Insertion of needle into vein for collection of blood sample	641	377	$11.00	$2.98
99441 Telephone medical discussion with physician, 5-10 minutes	232	139	$139.74	$51.99
99443 Telephone medical discussion with physician, 21-30 minutes	153	107	$226.27	$122.20
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	139	139	$200.00	$130.23
93000 Routine ekg using at least 12 leads including interpretation and report	129	127	$55.00	$19.39
99213 Established patient office or other outpatient visit, typically 15 minutes	63	29	$202.00	$82.29
G0008 Administration of influenza virus vaccine	53	53	$68.00	$19.03
90694 Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage	52	52	$135.00	$61.00
99442 Telephone medical discussion with physician, 11-20 minutes	39	33	$145.51	$84.12
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	25	25	$450.00	$183.02
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	12	11	$400.00	$163.07

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	1,008	466	$296.25	$120.09
36415 Insertion of needle into vein for collection of blood sample	954	494	$10.86	$2.94
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	179	179	$200.00	$128.55
93000 Routine ekg using at least 12 leads including interpretation and report	155	153	$55.00	$19.17
G0008 Administration of influenza virus vaccine	107	107	$65.00	$18.65
Q2038 Influenza virus vaccine, split virus, when administered to individuals 3 years of age and older, for intramuscular use (fluzone)	105	105	$45.00	$44.10
99213 Established patient office or other outpatient visit, typically 15 minutes	95	53	$200.32	$82.36
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	62	62	$445.48	$180.45
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	44	42	$395.45	$160.27

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	1,011	451	$285.00	$115.47
36415 Insertion of needle into vein for collection of blood sample	867	459	$10.00	$2.94
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	179	179	$200.00	$125.65
93000 Routine ekg using at least 12 leads including interpretation and report	162	161	$55.00	$18.56
99213 Established patient office or other outpatient visit, typically 15 minutes	110	68	$194.00	$78.58
G0008 Administration of influenza virus vaccine	96	96	$70.00	$23.21
Q2038 Influenza virus vaccine, split virus, when administered to individuals 3 years of age and older, for intramuscular use (fluzone)	96	96	$35.94	$35.22
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	42	42	$430.00	$175.53
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	26	23	$380.00	$155.00

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	952	458	$283.23	$116.60
36415 Insertion of needle into vein for collection of blood sample	818	458	$10.00	$2.94
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	169	169	$200.00	$126.21
93000 Routine ekg using at least 12 leads including interpretation and report	152	150	$55.00	$18.82
99213 Established patient office or other outpatient visit, typically 15 minutes	136	74	$192.00	$79.61
G0008 Administration of influenza virus vaccine	100	100	$69.00	$28.66
90662 Influenza vaccine split virus, preservative free	65	65	$55.00	$48.05
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	45	45	$428.44	$176.56
Q2038 Influenza virus vaccine, split virus, when administered to individuals 3 years of age and older, for intramuscular use (fluzone)	35	35	$25.29	$24.78
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	29	29	$380.00	$156.17

Medical Specialties & State Licenses

Specialist Primary Specialty

NUCC Taxonomy Code: 174400000X

State License MA 36773

An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

2051524 (MA)

Commercial Insurance / Payer ID Bc/bs

B33459 (MA)

Commercial Insurance / Payer ID Pilgrim

60453 (MA)

Commercial Insurance / Payer ID Tufts

701905 (MA)

Commercial Insurance / Payer ID United

3300175 (MA)

Commercial Insurance / Payer ID Cigna

B10018001 (MA)

Practice Associates & Co-Workers

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

40 Associated Practitioners

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Pediatrics

NPI 1003889601

Doctor of Medicine (M.D.)

Dr. Bruce Leslie , MD

Orthopaedic Surgery - Hand Surgery

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Doctor of Medicine (M.D.)

Dr. Tara Grabowsky , MD

Internal Medicine

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Doctor of Medicine (M.D.)

Dr. Melissa Wendt , MD

Internal Medicine

NPI 1043477821

Doctor of Medicine (M.D.)

Dr. Alla Neyshtadt , MD

Internal Medicine

NPI 1063576296

Doctor of Medicine (M.D.)

Career & Practice History Timeline

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

6 Historical Events

✅

NPI Profile Active July 08, 2007

NPI status registered as active in NPPES database

📍

Updated Practice Location July 08, 2007

Registered at 2000 WASHINGTON ST, SUITE 100, NEWTON, MA 024621650 (Tel: 6172441311)

📍

Updated Business Mailing Address July 08, 2007

Registered at 2000 WASHINGTON ST, SUITE 100, NEWTON, MA 024621650 (Tel: 6172441311)

👤

Provider Name / Credentials Updated July 08, 2007

Recorded as JOHN LAROSSA, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) July 08, 2007

Specialist (License #36773 in MA)

🟢

Initial NPI Registration & Enumeration March 01, 2006

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

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NPI Administrative Meta

NPI Number: 1346217155

Entity Type:

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

Enumeration Date: March 01, 2006

Last Update: July 13, 2026

Sole Proprietor: No

Update or Correct Profile

Mailing Address

2000 Washington St, Suite 100

Newton, MA 024621650

Phone: 6172441311

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.